diff --git a/libavformat/smoothstreamingdec.c b/libavformat/smoothstreamingdec.c
new file mode 100644
index 0000000..7b8224f
--- /dev/null
+++ b/libavformat/smoothstreamingdec.c
@@ -0,0 +1,2397 @@
+/*
+ * HTTP Smooth  Streaming based on DASH demuxer
+ * Copyright (c) 2017 samsamsam@o2.pl based on HLS demux
+ * Copyright (c) 2017 Steven Liu
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <libxml/parser.h>
+#include "libavutil/intreadwrite.h"
+#include "libavutil/opt.h"
+#include "libavutil/time.h"
+#include "libavutil/parseutils.h"
+#include "internal.h"
+#include "avio_internal.h"
+#include "dash.h"
+
+#define INITIAL_BUFFER_SIZE 32768
+#define MAX_MANIFEST_SIZE 50 * 1024
+#define DEFAULT_MANIFEST_SIZE 8 * 1024
+
+struct fragment {
+    int64_t url_offset;
+    int64_t size;
+    char *url;
+};
+
+/*
+ * reference to : ISO_IEC_23009-1-DASH-2012
+ * Section: 5.3.9.6.2
+ * Table: Table 17 — Semantics of SegmentTimeline element
+ * */
+struct timeline {
+    /* starttime: Element or Attribute Name
+     * specifies the MPD start time, in @timescale units,
+     * the first Segment in the series starts relative to the beginning of the Period.
+     * The value of this attribute must be equal to or greater than the sum of the previous S
+     * element earliest presentation time and the sum of the contiguous Segment durations.
+     * If the value of the attribute is greater than what is expressed by the previous S element,
+     * it expresses discontinuities in the timeline.
+     * If not present then the value shall be assumed to be zero for the first S element
+     * and for the subsequent S elements, the value shall be assumed to be the sum of
+     * the previous S element's earliest presentation time and contiguous duration
+     * (i.e. previous S@starttime + @duration * (@repeat + 1)).
+     * */
+    int64_t starttime;
+    /* repeat: Element or Attribute Name
+     * specifies the repeat count of the number of following contiguous Segments with
+     * the same duration expressed by the value of @duration. This value is zero-based
+     * (e.g. a value of three means four Segments in the contiguous series).
+     * */
+    int64_t repeat;
+    /* duration: Element or Attribute Name
+     * specifies the Segment duration, in units of the value of the @timescale.
+     * */
+    int64_t duration;
+};
+
+/*
+ * Each playlist has its own demuxer. If it is currently active,
+ * it has an opened AVIOContext too, and potentially an AVPacket
+ * containing the next packet from this stream.
+ */
+struct representation {
+    char *url_template;
+    AVIOContext pb;
+    AVIOContext *input;
+    AVFormatContext *parent;
+    AVFormatContext *ctx;
+    int stream_index;
+
+    char id[20];
+    char *lang;
+    int bandwidth;
+    AVRational framerate;
+    AVStream *assoc_stream; /* demuxer stream associated with this representation */
+
+    int n_fragments;
+    struct fragment **fragments; /* VOD list of fragment for profile */
+
+    int n_timelines;
+    struct timeline **timelines;
+
+    int64_t first_seq_no;
+    int64_t last_seq_no;
+    int64_t start_number; /* used in case when we have dynamic list of segment to know which segments are new one*/
+
+    int64_t fragment_duration;
+    int64_t fragment_timescale;
+
+    int64_t presentation_timeoffset;
+
+    int64_t cur_seq_no;
+    int64_t cur_seg_offset;
+    int64_t cur_seg_size;
+    struct fragment *cur_seg;
+
+    /* Currently active Media Initialization Section */
+    struct fragment *init_section;
+    uint8_t *init_sec_buf;
+    uint32_t init_sec_buf_size;
+    uint32_t init_sec_data_len;
+    uint32_t init_sec_buf_read_offset;
+    int64_t cur_timestamp;
+    int is_restart_needed;
+};
+
+typedef struct SmoothStreamingContext {
+    const AVClass *class;
+    char *base_url;
+
+    int n_videos;
+    struct representation **videos;
+    int n_audios;
+    struct representation **audios;
+    int n_subtitles;
+    struct representation **subtitles;
+
+    /* MediaPresentationDescription Attribute */
+    uint64_t media_presentation_duration;
+    uint64_t suggested_presentation_delay;
+    uint64_t availability_start_time;
+    uint64_t availability_end_time;
+    uint64_t publish_time;
+    uint64_t minimum_update_period;
+    uint64_t time_shift_buffer_depth;
+    uint64_t min_buffer_time;
+
+    /* Period Attribute */
+    uint64_t period_duration;
+    uint64_t period_start;
+
+    /* AdaptationSet Attribute */
+    char *adaptionset_lang;
+
+    int is_live;
+    AVIOInterruptCB *interrupt_callback;
+    char *allowed_extensions;
+    AVDictionary *avio_opts;
+    int max_url_size;
+    char *cenc_decryption_key;
+
+    /* Flags for init section*/
+    int is_init_section_common_video;
+    int is_init_section_common_audio;
+
+} SmoothStreamingContext;
+
+static int ishttp(char *url)
+{
+    const char *proto_name = avio_find_protocol_name(url);
+    return av_strstart(proto_name, "http", NULL);
+}
+
+static int aligned(int val)
+{
+    return ((val + 0x3F) >> 6) << 6;
+}
+
+static uint64_t get_current_time_in_sec(void)
+{
+    return  av_gettime() / 1000000;
+}
+
+static uint64_t get_utc_date_time_insec(AVFormatContext *s, const char *datetime)
+{
+    struct tm timeinfo;
+    int year = 0;
+    int month = 0;
+    int day = 0;
+    int hour = 0;
+    int minute = 0;
+    int ret = 0;
+    float second = 0.0;
+
+    /* ISO-8601 date parser */
+    if (!datetime)
+        return 0;
+
+    ret = sscanf(datetime, "%d-%d-%dT%d:%d:%fZ", &year, &month, &day, &hour, &minute, &second);
+    /* year, month, day, hour, minute, second  6 arguments */
+    if (ret != 6) {
+        av_log(s, AV_LOG_WARNING, "get_utc_date_time_insec get a wrong time format\n");
+    }
+    timeinfo.tm_year = year - 1900;
+    timeinfo.tm_mon  = month - 1;
+    timeinfo.tm_mday = day;
+    timeinfo.tm_hour = hour;
+    timeinfo.tm_min  = minute;
+    timeinfo.tm_sec  = (int)second;
+
+    return av_timegm(&timeinfo);
+}
+
+static uint32_t get_duration_insec(AVFormatContext *s, const char *duration)
+{
+    /* ISO-8601 duration parser */
+    uint32_t days = 0;
+    uint32_t hours = 0;
+    uint32_t mins = 0;
+    uint32_t secs = 0;
+    int size = 0;
+    float value = 0;
+    char type = '\0';
+    const char *ptr = duration;
+
+    while (*ptr) {
+        if (*ptr == 'P' || *ptr == 'T') {
+            ptr++;
+            continue;
+        }
+
+        if (sscanf(ptr, "%f%c%n", &value, &type, &size) != 2) {
+            av_log(s, AV_LOG_WARNING, "get_duration_insec get a wrong time format\n");
+            return 0; /* parser error */
+        }
+        switch (type) {
+            case 'D':
+                days = (uint32_t)value;
+                break;
+            case 'H':
+                hours = (uint32_t)value;
+                break;
+            case 'M':
+                mins = (uint32_t)value;
+                break;
+            case 'S':
+                secs = (uint32_t)value;
+                break;
+            default:
+                // handle invalid type
+                break;
+        }
+        ptr += size;
+    }
+    return  ((days * 24 + hours) * 60 + mins) * 60 + secs;
+}
+
+static int64_t get_segment_start_time_based_on_timeline(struct representation *pls, int64_t cur_seq_no)
+{
+    int64_t start_time = 0;
+    int64_t i = 0;
+    int64_t j = 0;
+    int64_t num = 0;
+
+    if (pls->n_timelines) {
+        for (i = 0; i < pls->n_timelines; i++) {
+            if (pls->timelines[i]->starttime > 0) {
+                start_time = pls->timelines[i]->starttime;
+            }
+            if (num == cur_seq_no)
+                goto finish;
+
+            start_time += pls->timelines[i]->duration;
+
+            if (pls->timelines[i]->repeat == -1) {
+                start_time = pls->timelines[i]->duration * cur_seq_no;
+                goto finish;
+            }
+
+            for (j = 0; j < pls->timelines[i]->repeat; j++) {
+                num++;
+                if (num == cur_seq_no)
+                    goto finish;
+                start_time += pls->timelines[i]->duration;
+            }
+            num++;
+        }
+    }
+finish:
+    return start_time;
+}
+
+static int64_t calc_next_seg_no_from_timelines(struct representation *pls, int64_t cur_time)
+{
+    int64_t i = 0;
+    int64_t j = 0;
+    int64_t num = 0;
+    int64_t start_time = 0;
+
+    for (i = 0; i < pls->n_timelines; i++) {
+        if (pls->timelines[i]->starttime > 0) {
+            start_time = pls->timelines[i]->starttime;
+        }
+        if (start_time > cur_time)
+            goto finish;
+
+        start_time += pls->timelines[i]->duration;
+        for (j = 0; j < pls->timelines[i]->repeat; j++) {
+            num++;
+            if (start_time > cur_time)
+                goto finish;
+            start_time += pls->timelines[i]->duration;
+        }
+        num++;
+    }
+
+    return -1;
+
+finish:
+    return num;
+}
+
+static void free_fragment(struct fragment **seg)
+{
+    if (!(*seg)) {
+        return;
+    }
+    av_freep(&(*seg)->url);
+    av_freep(seg);
+}
+
+static void free_fragment_list(struct representation *pls)
+{
+    int i;
+
+    for (i = 0; i < pls->n_fragments; i++) {
+        free_fragment(&pls->fragments[i]);
+    }
+    av_freep(&pls->fragments);
+    pls->n_fragments = 0;
+}
+
+static void free_timelines_list(struct representation *pls)
+{
+    int i;
+
+    for (i = 0; i < pls->n_timelines; i++) {
+        av_freep(&pls->timelines[i]);
+    }
+    av_freep(&pls->timelines);
+    pls->n_timelines = 0;
+}
+
+static void free_representation(struct representation *pls)
+{
+    free_fragment_list(pls);
+    free_timelines_list(pls);
+    free_fragment(&pls->cur_seg);
+    free_fragment(&pls->init_section);
+    av_freep(&pls->init_sec_buf);
+    av_freep(&pls->pb.buffer);
+    ff_format_io_close(pls->parent, &pls->input);
+    if (pls->ctx) {
+        pls->ctx->pb = NULL;
+        avformat_close_input(&pls->ctx);
+    }
+
+    av_freep(&pls->url_template);
+    av_freep(&pls->lang);
+    av_freep(&pls);
+}
+
+static void free_video_list(DASHContext *c)
+{
+    int i;
+    for (i = 0; i < c->n_videos; i++) {
+        struct representation *pls = c->videos[i];
+        free_representation(pls);
+    }
+    av_freep(&c->videos);
+    c->n_videos = 0;
+}
+
+static void free_audio_list(DASHContext *c)
+{
+    int i;
+    for (i = 0; i < c->n_audios; i++) {
+        struct representation *pls = c->audios[i];
+        free_representation(pls);
+    }
+    av_freep(&c->audios);
+    c->n_audios = 0;
+}
+
+static void free_subtitle_list(DASHContext *c)
+{
+    int i;
+    for (i = 0; i < c->n_subtitles; i++) {
+        struct representation *pls = c->subtitles[i];
+        free_representation(pls);
+    }
+    av_freep(&c->subtitles);
+    c->n_subtitles = 0;
+}
+
+static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
+                    AVDictionary **opts, AVDictionary *opts2, int *is_http)
+{
+    SmoothStreamingContext *c = s->priv_data;
+    AVDictionary *tmp = NULL;
+    const char *proto_name = NULL;
+    int ret;
+
+    if (av_strstart(url, "crypto", NULL)) {
+        if (url[6] == '+' || url[6] == ':')
+            proto_name = avio_find_protocol_name(url + 7);
+    }
+
+    if (!proto_name)
+        proto_name = avio_find_protocol_name(url);
+
+    if (!proto_name)
+        return AVERROR_INVALIDDATA;
+
+    // only http(s) & file are allowed
+    if (av_strstart(proto_name, "file", NULL)) {
+        if (strcmp(c->allowed_extensions, "ALL") && !av_match_ext(url, c->allowed_extensions)) {
+            av_log(s, AV_LOG_ERROR,
+                   "Filename extension of \'%s\' is not a common multimedia extension, blocked for security reasons.\n"
+                   "If you wish to override this adjust allowed_extensions, you can set it to \'ALL\' to allow all\n",
+                   url);
+            return AVERROR_INVALIDDATA;
+        }
+    } else if (av_strstart(proto_name, "http", NULL)) {
+        ;
+    } else
+        return AVERROR_INVALIDDATA;
+
+    if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
+        ;
+    else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name, url + 7, strlen(proto_name)) && url[7 + strlen(proto_name)] == ':')
+        ;
+    else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
+        return AVERROR_INVALIDDATA;
+
+    av_freep(pb);
+    av_dict_copy(&tmp, *opts, 0);
+    av_dict_copy(&tmp, opts2, 0);
+    ret = avio_open2(pb, url, AVIO_FLAG_READ, c->interrupt_callback, &tmp);
+    if (ret >= 0) {
+        // update cookies on http response with setcookies.
+        char *new_cookies = NULL;
+
+        if (!(s->flags & AVFMT_FLAG_CUSTOM_IO))
+            av_opt_get(*pb, "cookies", AV_OPT_SEARCH_CHILDREN, (uint8_t**)&new_cookies);
+
+        if (new_cookies) {
+            av_dict_set(opts, "cookies", new_cookies, AV_DICT_DONT_STRDUP_VAL);
+        }
+
+    }
+
+    av_dict_free(&tmp);
+
+    if (is_http)
+        *is_http = av_strstart(proto_name, "http", NULL);
+
+    return ret;
+}
+
+static char *get_content_url(xmlNodePtr *baseurl_nodes,
+                             int n_baseurl_nodes,
+                             int max_url_size,
+                             char *rep_id_val,
+                             char *rep_bandwidth_val,
+                             char *val)
+{
+    int i;
+    char *text;
+    char *url = NULL;
+    char *tmp_str = av_mallocz(max_url_size);
+
+    if (!tmp_str)
+        return NULL;
+
+    for (i = 0; i < n_baseurl_nodes; ++i) {
+        if (baseurl_nodes[i] &&
+            baseurl_nodes[i]->children &&
+            baseurl_nodes[i]->children->type == XML_TEXT_NODE) {
+            text = xmlNodeGetContent(baseurl_nodes[i]->children);
+            if (text) {
+                memset(tmp_str, 0, max_url_size);
+                ff_make_absolute_url(tmp_str, max_url_size, "", text);
+                xmlFree(text);
+            }
+        }
+    }
+
+    if (val)
+        ff_make_absolute_url(tmp_str, max_url_size, tmp_str, val);
+
+    if (rep_id_val) {
+        url = av_strireplace(tmp_str, "$RepresentationID$", (const char*)rep_id_val);
+        if (!url) {
+            goto end;
+        }
+        av_strlcpy(tmp_str, url, max_url_size);
+    }
+    if (rep_bandwidth_val && tmp_str[0] != '\0') {
+        // free any previously assigned url before reassigning
+        av_free(url);
+        url = av_strireplace(tmp_str, "$Bandwidth$", (const char*)rep_bandwidth_val);
+        if (!url) {
+            goto end;
+        }
+    }
+end:
+    av_free(tmp_str);
+    return url;
+}
+
+static char *get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, const char *attrname)
+{
+    int i;
+    char *val;
+
+    for (i = 0; i < n_nodes; ++i) {
+        if (nodes[i]) {
+            val = xmlGetProp(nodes[i], attrname);
+            if (val)
+                return val;
+        }
+    }
+
+    return NULL;
+}
+
+static xmlNodePtr find_child_node_by_name(xmlNodePtr rootnode, const char *nodename)
+{
+    xmlNodePtr node = rootnode;
+    if (!node) {
+        return NULL;
+    }
+
+    node = xmlFirstElementChild(node);
+    while (node) {
+        if (!av_strcasecmp(node->name, nodename)) {
+            return node;
+        }
+        node = xmlNextElementSibling(node);
+    }
+    return NULL;
+}
+
+static enum AVMediaType get_content_type(xmlNodePtr node)
+{
+    enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN;
+    int i = 0;
+    const char *attr;
+    char *val = NULL;
+
+    if (node) {
+        for (i = 0; i < 2; i++) {
+            attr = i ? "mimeType" : "contentType";
+            val = xmlGetProp(node, attr);
+            if (val) {
+                if (av_stristr((const char *)val, "video")) {
+                    type = AVMEDIA_TYPE_VIDEO;
+                } else if (av_stristr((const char *)val, "audio")) {
+                    type = AVMEDIA_TYPE_AUDIO;
+                } else if (av_stristr((const char *)val, "text")) {
+                    type = AVMEDIA_TYPE_SUBTITLE;
+                }
+                xmlFree(val);
+            }
+        }
+    }
+    return type;
+}
+
+static struct fragment * get_Fragment(char *range)
+{
+    struct fragment * seg =  av_mallocz(sizeof(struct fragment));
+
+    if (!seg)
+        return NULL;
+
+    seg->size = -1;
+    if (range) {
+        char *str_end_offset;
+        char *str_offset = av_strtok(range, "-", &str_end_offset);
+        seg->url_offset = strtoll(str_offset, NULL, 10);
+        seg->size = strtoll(str_end_offset, NULL, 10) - seg->url_offset + 1;
+    }
+
+    return seg;
+}
+
+static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representation *rep,
+                                         xmlNodePtr fragmenturl_node,
+                                         xmlNodePtr *baseurl_nodes,
+                                         char *rep_id_val,
+                                         char *rep_bandwidth_val)
+{
+    DASHContext *c = s->priv_data;
+    char *initialization_val = NULL;
+    char *media_val = NULL;
+    char *range_val = NULL;
+    int max_url_size = c ? c->max_url_size: MAX_URL_SIZE;
+    int err;
+
+    if (!av_strcasecmp(fragmenturl_node->name, (const char *)"Initialization")) {
+        initialization_val = xmlGetProp(fragmenturl_node, "sourceURL");
+        range_val = xmlGetProp(fragmenturl_node, "range");
+        if (initialization_val || range_val) {
+            free_fragment(&rep->init_section);
+            rep->init_section = get_Fragment(range_val);
+            xmlFree(range_val);
+            if (!rep->init_section) {
+                xmlFree(initialization_val);
+                return AVERROR(ENOMEM);
+            }
+            rep->init_section->url = get_content_url(baseurl_nodes, 4,
+                                                     max_url_size,
+                                                     rep_id_val,
+                                                     rep_bandwidth_val,
+                                                     initialization_val);
+            xmlFree(initialization_val);
+            if (!rep->init_section->url) {
+                av_freep(&rep->init_section);
+                return AVERROR(ENOMEM);
+            }
+        }
+    } else if (!av_strcasecmp(fragmenturl_node->name, (const char *)"SegmentURL")) {
+        media_val = xmlGetProp(fragmenturl_node, "media");
+        range_val = xmlGetProp(fragmenturl_node, "mediaRange");
+        if (media_val || range_val) {
+            struct fragment *seg = get_Fragment(range_val);
+            xmlFree(range_val);
+            if (!seg) {
+                xmlFree(media_val);
+                return AVERROR(ENOMEM);
+            }
+            seg->url = get_content_url(baseurl_nodes, 4,
+                                       max_url_size,
+                                       rep_id_val,
+                                       rep_bandwidth_val,
+                                       media_val);
+            xmlFree(media_val);
+            if (!seg->url) {
+                av_free(seg);
+                return AVERROR(ENOMEM);
+            }
+            err = av_dynarray_add_nofree(&rep->fragments, &rep->n_fragments, seg);
+            if (err < 0) {
+                free_fragment(&seg);
+                return err;
+            }
+        }
+    }
+
+    return 0;
+}
+
+static int parse_manifest_segmenttimeline(AVFormatContext *s, struct representation *rep,
+                                          xmlNodePtr fragment_timeline_node)
+{
+    xmlAttrPtr attr = NULL;
+    char *val  = NULL;
+    int err;
+
+    if (!av_strcasecmp(fragment_timeline_node->name, (const char *)"S")) {
+        struct timeline *tml = av_mallocz(sizeof(struct timeline));
+        if (!tml) {
+            return AVERROR(ENOMEM);
+        }
+        attr = fragment_timeline_node->properties;
+        while (attr) {
+            val = xmlGetProp(fragment_timeline_node, attr->name);
+
+            if (!val) {
+                av_log(s, AV_LOG_WARNING, "parse_manifest_segmenttimeline attr->name = %s val is NULL\n", attr->name);
+                continue;
+            }
+
+            if (!av_strcasecmp(attr->name, (const char *)"t")) {
+                tml->starttime = (int64_t)strtoll(val, NULL, 10);
+            } else if (!av_strcasecmp(attr->name, (const char *)"r")) {
+                tml->repeat =(int64_t) strtoll(val, NULL, 10);
+            } else if (!av_strcasecmp(attr->name, (const char *)"d")) {
+                tml->duration = (int64_t)strtoll(val, NULL, 10);
+            }
+            attr = attr->next;
+            xmlFree(val);
+        }
+        err = av_dynarray_add_nofree(&rep->timelines, &rep->n_timelines, tml);
+        if (err < 0) {
+            av_free(tml);
+            return err;
+        }
+    }
+
+    return 0;
+}
+
+static int resolve_content_path(AVFormatContext *s, const char *url, int *max_url_size, xmlNodePtr *baseurl_nodes, int n_baseurl_nodes)
+{
+    char *tmp_str = NULL;
+    char *path = NULL;
+    char *mpdName = NULL;
+    xmlNodePtr node = NULL;
+    char *baseurl = NULL;
+    char *root_url = NULL;
+    char *text = NULL;
+    char *tmp = NULL;
+    int isRootHttp = 0;
+    char token ='/';
+    int start =  0;
+    int rootId = 0;
+    int updated = 0;
+    int size = 0;
+    int i;
+    int tmp_max_url_size = strlen(url);
+
+    for (i = n_baseurl_nodes-1; i >= 0 ; i--) {
+        text = xmlNodeGetContent(baseurl_nodes[i]);
+        if (!text)
+            continue;
+        tmp_max_url_size += strlen(text);
+        if (ishttp(text)) {
+            xmlFree(text);
+            break;
+        }
+        xmlFree(text);
+    }
+
+    tmp_max_url_size = aligned(tmp_max_url_size);
+    text = av_mallocz(tmp_max_url_size);
+    if (!text) {
+        updated = AVERROR(ENOMEM);
+        goto end;
+    }
+    av_strlcpy(text, url, strlen(url)+1);
+    tmp = text;
+    while (mpdName = av_strtok(tmp, "/", &tmp))  {
+        size = strlen(mpdName);
+    }
+    av_free(text);
+
+    path = av_mallocz(tmp_max_url_size);
+    tmp_str = av_mallocz(tmp_max_url_size);
+    if (!tmp_str || !path) {
+        updated = AVERROR(ENOMEM);
+        goto end;
+    }
+
+    av_strlcpy (path, url, strlen(url) - size + 1);
+    for (rootId = n_baseurl_nodes - 1; rootId > 0; rootId --) {
+        if (!(node = baseurl_nodes[rootId])) {
+            continue;
+        }
+        text = xmlNodeGetContent(node);
+        if (ishttp(text)) {
+            xmlFree(text);
+            break;
+        }
+        xmlFree(text);
+    }
+
+    node = baseurl_nodes[rootId];
+    baseurl = xmlNodeGetContent(node);
+    root_url = (av_strcasecmp(baseurl, "")) ? baseurl : path;
+    if (node) {
+        xmlNodeSetContent(node, root_url);
+        updated = 1;
+    }
+
+    size = strlen(root_url);
+    isRootHttp = ishttp(root_url);
+
+    if (root_url[size - 1] != token) {
+        av_strlcat(root_url, "/", size + 2);
+        size += 2;
+    }
+
+    for (i = 0; i < n_baseurl_nodes; ++i) {
+        if (i == rootId) {
+            continue;
+        }
+        text = xmlNodeGetContent(baseurl_nodes[i]);
+        if (text && !av_strstart(text, "/", NULL)) {
+            memset(tmp_str, 0, strlen(tmp_str));
+            if (!ishttp(text) && isRootHttp) {
+                av_strlcpy(tmp_str, root_url, size + 1);
+            }
+            start = (text[0] == token);
+            if (start && av_stristr(tmp_str, text)) {
+                char *p = tmp_str;
+                if (!av_strncasecmp(tmp_str, "http://", 7)) {
+                    p += 7;
+                } else if (!av_strncasecmp(tmp_str, "https://", 8)) {
+                    p += 8;
+                }
+                p = strchr(p, '/');
+                memset(p + 1, 0, strlen(p));
+            }
+            av_strlcat(tmp_str, text + start, tmp_max_url_size);
+            xmlNodeSetContent(baseurl_nodes[i], tmp_str);
+            updated = 1;
+            xmlFree(text);
+        }
+    }
+
+end:
+    if (tmp_max_url_size > *max_url_size) {
+        *max_url_size = tmp_max_url_size;
+    }
+    av_free(path);
+    av_free(tmp_str);
+    xmlFree(baseurl);
+    return updated;
+
+}
+
+static int parse_manifest_representation(AVFormatContext *s, const char *url,
+                                         xmlNodePtr node,
+                                         xmlNodePtr adaptionset_node,
+                                         xmlNodePtr mpd_baseurl_node,
+                                         xmlNodePtr period_baseurl_node,
+                                         xmlNodePtr period_segmenttemplate_node,
+                                         xmlNodePtr period_segmentlist_node,
+                                         xmlNodePtr fragment_template_node,
+                                         xmlNodePtr content_component_node,
+                                         xmlNodePtr adaptionset_baseurl_node,
+                                         xmlNodePtr adaptionset_segmentlist_node,
+                                         xmlNodePtr adaptionset_supplementalproperty_node)
+{
+    int32_t ret = 0;
+    DASHContext *c = s->priv_data;
+    struct representation *rep = NULL;
+    struct fragment *seg = NULL;
+    xmlNodePtr representation_segmenttemplate_node = NULL;
+    xmlNodePtr representation_baseurl_node = NULL;
+    xmlNodePtr representation_segmentlist_node = NULL;
+    xmlNodePtr segmentlists_tab[3];
+    xmlNodePtr fragment_timeline_node = NULL;
+    xmlNodePtr fragment_templates_tab[5];
+    char *duration_val = NULL;
+    char *presentation_timeoffset_val = NULL;
+    char *startnumber_val = NULL;
+    char *timescale_val = NULL;
+    char *initialization_val = NULL;
+    char *media_val = NULL;
+    char *val = NULL;
+    xmlNodePtr baseurl_nodes[4];
+    xmlNodePtr representation_node = node;
+    char *rep_id_val = xmlGetProp(representation_node, "id");
+    char *rep_bandwidth_val = xmlGetProp(representation_node, "bandwidth");
+    char *rep_framerate_val = xmlGetProp(representation_node, "frameRate");
+    enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN;
+
+    // try get information from representation
+    if (type == AVMEDIA_TYPE_UNKNOWN)
+        type = get_content_type(representation_node);
+    // try get information from contentComponen
+    if (type == AVMEDIA_TYPE_UNKNOWN)
+        type = get_content_type(content_component_node);
+    // try get information from adaption set
+    if (type == AVMEDIA_TYPE_UNKNOWN)
+        type = get_content_type(adaptionset_node);
+    if (type == AVMEDIA_TYPE_UNKNOWN) {
+        av_log(s, AV_LOG_VERBOSE, "Parsing '%s' - skipp not supported representation type\n", url);
+    } else if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO || type == AVMEDIA_TYPE_SUBTITLE) {
+        // convert selected representation to our internal struct
+        rep = av_mallocz(sizeof(struct representation));
+        if (!rep) {
+            ret = AVERROR(ENOMEM);
+            goto end;
+        }
+        if (c->adaptionset_lang) {
+            rep->lang = av_strdup(c->adaptionset_lang);
+            if (!rep->lang) {
+                av_log(s, AV_LOG_ERROR, "alloc language memory failure\n");
+                av_freep(&rep);
+                ret = AVERROR(ENOMEM);
+                goto end;
+            }
+        }
+        rep->parent = s;
+        representation_segmenttemplate_node = find_child_node_by_name(representation_node, "SegmentTemplate");
+        representation_baseurl_node = find_child_node_by_name(representation_node, "BaseURL");
+        representation_segmentlist_node = find_child_node_by_name(representation_node, "SegmentList");
+
+        baseurl_nodes[0] = mpd_baseurl_node;
+        baseurl_nodes[1] = period_baseurl_node;
+        baseurl_nodes[2] = adaptionset_baseurl_node;
+        baseurl_nodes[3] = representation_baseurl_node;
+
+        ret = resolve_content_path(s, url, &c->max_url_size, baseurl_nodes, 4);
+        c->max_url_size = aligned(c->max_url_size
+                                  + (rep_id_val ? strlen(rep_id_val) : 0)
+                                  + (rep_bandwidth_val ? strlen(rep_bandwidth_val) : 0));
+        if (ret == AVERROR(ENOMEM) || ret == 0)
+            goto free;
+        if (representation_segmenttemplate_node || fragment_template_node || period_segmenttemplate_node) {
+            fragment_timeline_node = NULL;
+            fragment_templates_tab[0] = representation_segmenttemplate_node;
+            fragment_templates_tab[1] = adaptionset_segmentlist_node;
+            fragment_templates_tab[2] = fragment_template_node;
+            fragment_templates_tab[3] = period_segmenttemplate_node;
+            fragment_templates_tab[4] = period_segmentlist_node;
+
+            initialization_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "initialization");
+            if (initialization_val) {
+                rep->init_section = av_mallocz(sizeof(struct fragment));
+                if (!rep->init_section) {
+                    xmlFree(initialization_val);
+                    goto enomem;
+                }
+                c->max_url_size = aligned(c->max_url_size  + strlen(initialization_val));
+                rep->init_section->url = get_content_url(baseurl_nodes, 4,  c->max_url_size, rep_id_val, rep_bandwidth_val, initialization_val);
+                xmlFree(initialization_val);
+                if (!rep->init_section->url)
+                    goto enomem;
+                rep->init_section->size = -1;
+            }
+            media_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "media");
+            if (media_val) {
+                c->max_url_size = aligned(c->max_url_size  + strlen(media_val));
+                rep->url_template = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, media_val);
+                xmlFree(media_val);
+            }
+            presentation_timeoffset_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "presentationTimeOffset");
+            if (presentation_timeoffset_val) {
+                rep->presentation_timeoffset = (int64_t) strtoll(presentation_timeoffset_val, NULL, 10);
+                av_log(s, AV_LOG_TRACE, "rep->presentation_timeoffset = [%"PRId64"]\n", rep->presentation_timeoffset);
+                xmlFree(presentation_timeoffset_val);
+            }
+            duration_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "duration");
+            if (duration_val) {
+                rep->fragment_duration = (int64_t) strtoll(duration_val, NULL, 10);
+                av_log(s, AV_LOG_TRACE, "rep->fragment_duration = [%"PRId64"]\n", rep->fragment_duration);
+                xmlFree(duration_val);
+            }
+            timescale_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "timescale");
+            if (timescale_val) {
+                rep->fragment_timescale = (int64_t) strtoll(timescale_val, NULL, 10);
+                av_log(s, AV_LOG_TRACE, "rep->fragment_timescale = [%"PRId64"]\n", rep->fragment_timescale);
+                xmlFree(timescale_val);
+            }
+            startnumber_val = get_val_from_nodes_tab(fragment_templates_tab, 4, "startNumber");
+            if (startnumber_val) {
+                rep->start_number = rep->first_seq_no = (int64_t) strtoll(startnumber_val, NULL, 10);
+                av_log(s, AV_LOG_TRACE, "rep->first_seq_no = [%"PRId64"]\n", rep->first_seq_no);
+                xmlFree(startnumber_val);
+            }
+            if (adaptionset_supplementalproperty_node) {
+                if (!av_strcasecmp(xmlGetProp(adaptionset_supplementalproperty_node,"schemeIdUri"), "http://dashif.org/guidelines/last-segment-number")) {
+                    val = xmlGetProp(adaptionset_supplementalproperty_node,"value");
+                    if (!val) {
+                        av_log(s, AV_LOG_ERROR, "Missing value attribute in adaptionset_supplementalproperty_node\n");
+                    } else {
+                        rep->last_seq_no =(int64_t) strtoll(val, NULL, 10) - 1;
+                        xmlFree(val);
+                    }
+                }
+            }
+
+            fragment_timeline_node = find_child_node_by_name(representation_segmenttemplate_node, "SegmentTimeline");
+
+            if (!fragment_timeline_node)
+                fragment_timeline_node = find_child_node_by_name(fragment_template_node, "SegmentTimeline");
+            if (!fragment_timeline_node)
+                fragment_timeline_node = find_child_node_by_name(adaptionset_segmentlist_node, "SegmentTimeline");
+            if (!fragment_timeline_node)
+                fragment_timeline_node = find_child_node_by_name(period_segmentlist_node, "SegmentTimeline");
+            if (fragment_timeline_node) {
+                fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
+                while (fragment_timeline_node) {
+                    ret = parse_manifest_segmenttimeline(s, rep, fragment_timeline_node);
+                    if (ret < 0)
+                        goto free;
+                    fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
+                }
+            }
+        } else if (representation_baseurl_node && !representation_segmentlist_node) {
+            seg = av_mallocz(sizeof(struct fragment));
+            if (!seg)
+                goto enomem;
+            ret = av_dynarray_add_nofree(&rep->fragments, &rep->n_fragments, seg);
+            if (ret < 0) {
+                av_free(seg);
+                goto free;
+            }
+            seg->url = get_content_url(baseurl_nodes, 4, c->max_url_size, rep_id_val, rep_bandwidth_val, NULL);
+            if (!seg->url)
+                goto enomem;
+            seg->size = -1;
+        } else if (representation_segmentlist_node) {
+            // TODO: https://www.brendanlong.com/the-structure-of-an-mpeg-dash-mpd.html
+            // http://www-itec.uni-klu.ac.at/dash/ddash/mpdGenerator.php?fragmentlength=15&type=full
+            xmlNodePtr fragmenturl_node = NULL;
+            segmentlists_tab[0] = representation_segmentlist_node;
+            segmentlists_tab[1] = adaptionset_segmentlist_node;
+            segmentlists_tab[2] = period_segmentlist_node;
+
+            duration_val = get_val_from_nodes_tab(segmentlists_tab, 3, "duration");
+            timescale_val = get_val_from_nodes_tab(segmentlists_tab, 3, "timescale");
+            startnumber_val = get_val_from_nodes_tab(segmentlists_tab, 3, "startNumber");
+            if (duration_val) {
+                rep->fragment_duration = (int64_t) strtoll(duration_val, NULL, 10);
+                av_log(s, AV_LOG_TRACE, "rep->fragment_duration = [%"PRId64"]\n", rep->fragment_duration);
+                xmlFree(duration_val);
+            }
+            if (timescale_val) {
+                rep->fragment_timescale = (int64_t) strtoll(timescale_val, NULL, 10);
+                av_log(s, AV_LOG_TRACE, "rep->fragment_timescale = [%"PRId64"]\n", rep->fragment_timescale);
+                xmlFree(timescale_val);
+            }
+            if (startnumber_val) {
+                rep->start_number = rep->first_seq_no = (int64_t) strtoll(startnumber_val, NULL, 10);
+                av_log(s, AV_LOG_TRACE, "rep->first_seq_no = [%"PRId64"]\n", rep->first_seq_no);
+                xmlFree(startnumber_val);
+            }
+
+            fragmenturl_node = xmlFirstElementChild(representation_segmentlist_node);
+            while (fragmenturl_node) {
+                ret = parse_manifest_segmenturlnode(s, rep, fragmenturl_node,
+                                                    baseurl_nodes,
+                                                    rep_id_val,
+                                                    rep_bandwidth_val);
+                if (ret < 0)
+                    goto free;
+                fragmenturl_node = xmlNextElementSibling(fragmenturl_node);
+            }
+
+            fragment_timeline_node = find_child_node_by_name(adaptionset_segmentlist_node, "SegmentTimeline");
+            if (!fragment_timeline_node)
+                fragment_timeline_node = find_child_node_by_name(period_segmentlist_node, "SegmentTimeline");
+            if (fragment_timeline_node) {
+                fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
+                while (fragment_timeline_node) {
+                    ret = parse_manifest_segmenttimeline(s, rep, fragment_timeline_node);
+                    if (ret < 0)
+                        goto free;
+                    fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
+                }
+            }
+        } else {
+            av_log(s, AV_LOG_ERROR, "Unknown format of Representation node id[%s] \n", (const char *)rep_id_val);
+            goto free;
+        }
+
+        if (rep) {
+            if (rep->fragment_duration > 0 && !rep->fragment_timescale)
+                rep->fragment_timescale = 1;
+            rep->bandwidth = rep_bandwidth_val ? atoi(rep_bandwidth_val) : 0;
+            strncpy(rep->id, rep_id_val ? rep_id_val : "", sizeof(rep->id));
+            rep->framerate = av_make_q(0, 0);
+            if (type == AVMEDIA_TYPE_VIDEO && rep_framerate_val) {
+                ret = av_parse_video_rate(&rep->framerate, rep_framerate_val);
+                if (ret < 0)
+                    av_log(s, AV_LOG_VERBOSE, "Ignoring invalid frame rate '%s'\n", rep_framerate_val);
+            }
+
+            switch (type) {
+                case AVMEDIA_TYPE_VIDEO:
+                    ret = av_dynarray_add_nofree(&c->videos, &c->n_videos, rep);
+                    break;
+                case AVMEDIA_TYPE_AUDIO:
+                    ret = av_dynarray_add_nofree(&c->audios, &c->n_audios, rep);
+                    break;
+                case AVMEDIA_TYPE_SUBTITLE:
+                    ret = av_dynarray_add_nofree(&c->subtitles, &c->n_subtitles, rep);
+                    break;
+                default:
+                    av_log(s, AV_LOG_WARNING, "Unsupported the stream type %d\n", type);
+                    break;
+            }
+            if (ret < 0)
+                goto free;
+        }
+    }
+
+end:
+    if (rep_id_val)
+        xmlFree(rep_id_val);
+    if (rep_bandwidth_val)
+        xmlFree(rep_bandwidth_val);
+    if (rep_framerate_val)
+        xmlFree(rep_framerate_val);
+
+    return ret;
+enomem:
+    ret = AVERROR(ENOMEM);
+free:
+    free_representation(rep);
+    goto end;
+}
+
+static int parse_manifest_adaptationset_attr(AVFormatContext *s, xmlNodePtr adaptionset_node)
+{
+    DASHContext *c = s->priv_data;
+
+    if (!adaptionset_node) {
+        av_log(s, AV_LOG_WARNING, "Cannot get AdaptionSet\n");
+        return AVERROR(EINVAL);
+    }
+    c->adaptionset_lang = xmlGetProp(adaptionset_node, "lang");
+
+    return 0;
+}
+
+static int parse_manifest_adaptationset(AVFormatContext *s, const char *url,
+                                        xmlNodePtr adaptionset_node,
+                                        xmlNodePtr mpd_baseurl_node,
+                                        xmlNodePtr period_baseurl_node,
+                                        xmlNodePtr period_segmenttemplate_node,
+                                        xmlNodePtr period_segmentlist_node)
+{
+    int ret = 0;
+    DASHContext *c = s->priv_data;
+    xmlNodePtr fragment_template_node = NULL;
+    xmlNodePtr content_component_node = NULL;
+    xmlNodePtr adaptionset_baseurl_node = NULL;
+    xmlNodePtr adaptionset_segmentlist_node = NULL;
+    xmlNodePtr adaptionset_supplementalproperty_node = NULL;
+    xmlNodePtr node = NULL;
+
+    ret = parse_manifest_adaptationset_attr(s, adaptionset_node);
+    if (ret < 0)
+        return ret;
+
+    node = xmlFirstElementChild(adaptionset_node);
+    while (node) {
+        if (!av_strcasecmp(node->name, (const char *)"SegmentTemplate")) {
+            fragment_template_node = node;
+        } else if (!av_strcasecmp(node->name, (const char *)"ContentComponent")) {
+            content_component_node = node;
+        } else if (!av_strcasecmp(node->name, (const char *)"BaseURL")) {
+            adaptionset_baseurl_node = node;
+        } else if (!av_strcasecmp(node->name, (const char *)"SegmentList")) {
+            adaptionset_segmentlist_node = node;
+        } else if (!av_strcasecmp(node->name, (const char *)"SupplementalProperty")) {
+            adaptionset_supplementalproperty_node = node;
+        } else if (!av_strcasecmp(node->name, (const char *)"Representation")) {
+            ret = parse_manifest_representation(s, url, node,
+                                                adaptionset_node,
+                                                mpd_baseurl_node,
+                                                period_baseurl_node,
+                                                period_segmenttemplate_node,
+                                                period_segmentlist_node,
+                                                fragment_template_node,
+                                                content_component_node,
+                                                adaptionset_baseurl_node,
+                                                adaptionset_segmentlist_node,
+                                                adaptionset_supplementalproperty_node);
+            if (ret < 0)
+                goto err;
+        }
+        node = xmlNextElementSibling(node);
+    }
+
+err:
+    xmlFree(c->adaptionset_lang);
+    c->adaptionset_lang = NULL;
+    return ret;
+}
+
+static int parse_programinformation(AVFormatContext *s, xmlNodePtr node)
+{
+    xmlChar *val = NULL;
+
+    node = xmlFirstElementChild(node);
+    while (node) {
+        if (!av_strcasecmp(node->name, "Title")) {
+            val = xmlNodeGetContent(node);
+            if (val) {
+                av_dict_set(&s->metadata, "Title", val, 0);
+            }
+        } else if (!av_strcasecmp(node->name, "Source")) {
+            val = xmlNodeGetContent(node);
+            if (val) {
+                av_dict_set(&s->metadata, "Source", val, 0);
+            }
+        } else if (!av_strcasecmp(node->name, "Copyright")) {
+            val = xmlNodeGetContent(node);
+            if (val) {
+                av_dict_set(&s->metadata, "Copyright", val, 0);
+            }
+        }
+        node = xmlNextElementSibling(node);
+        xmlFree(val);
+        val = NULL;
+    }
+    return 0;
+}
+
+static int parse_manifest(AVFormatContext *s, const char *url, AVIOContext *in)
+{
+    DASHContext *c = s->priv_data;
+    int ret = 0;
+    int close_in = 0;
+    uint8_t *new_url = NULL;
+    int64_t filesize = 0;
+    AVBPrint buf;
+    AVDictionary *opts = NULL;
+    xmlDoc *doc = NULL;
+    xmlNodePtr root_element = NULL;
+    xmlNodePtr node = NULL;
+    xmlNodePtr period_node = NULL;
+    xmlNodePtr tmp_node = NULL;
+    xmlNodePtr mpd_baseurl_node = NULL;
+    xmlNodePtr period_baseurl_node = NULL;
+    xmlNodePtr period_segmenttemplate_node = NULL;
+    xmlNodePtr period_segmentlist_node = NULL;
+    xmlNodePtr adaptionset_node = NULL;
+    xmlAttrPtr attr = NULL;
+    char *val  = NULL;
+    uint32_t period_duration_sec = 0;
+    uint32_t period_start_sec = 0;
+
+    if (!in) {
+        close_in = 1;
+
+        av_dict_copy(&opts, c->avio_opts, 0);
+        ret = avio_open2(&in, url, AVIO_FLAG_READ, c->interrupt_callback, &opts);
+        av_dict_free(&opts);
+        if (ret < 0)
+            return ret;
+    }
+
+    if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >= 0) {
+        c->base_url = av_strdup(new_url);
+    } else {
+        c->base_url = av_strdup(url);
+    }
+
+    filesize = avio_size(in);
+    if (filesize > MAX_MANIFEST_SIZE) {
+        av_log(s, AV_LOG_ERROR, "Manifest too large: %"PRId64"\n", filesize);
+        return AVERROR_INVALIDDATA;
+    }
+
+    av_bprint_init(&buf, (filesize > 0) ? filesize + 1 : DEFAULT_MANIFEST_SIZE, AV_BPRINT_SIZE_UNLIMITED);
+
+    if ((ret = avio_read_to_bprint(in, &buf, MAX_MANIFEST_SIZE)) < 0 ||
+        !avio_feof(in) ||
+        (filesize = buf.len) == 0) {
+        av_log(s, AV_LOG_ERROR, "Unable to read to manifest '%s'\n", url);
+        if (ret == 0)
+            ret = AVERROR_INVALIDDATA;
+    } else {
+        LIBXML_TEST_VERSION
+
+        doc = xmlReadMemory(buf.str, filesize, c->base_url, NULL, 0);
+        root_element = xmlDocGetRootElement(doc);
+        node = root_element;
+
+        if (!node) {
+            ret = AVERROR_INVALIDDATA;
+            av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing root node\n", url);
+            goto cleanup;
+        }
+
+        if (node->type != XML_ELEMENT_NODE ||
+            av_strcasecmp(node->name, (const char *)"MPD")) {
+            ret = AVERROR_INVALIDDATA;
+            av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - wrong root node name[%s] type[%d]\n", url, node->name, (int)node->type);
+            goto cleanup;
+        }
+
+        val = xmlGetProp(node, "type");
+        if (!val) {
+            av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing type attrib\n", url);
+            ret = AVERROR_INVALIDDATA;
+            goto cleanup;
+        }
+        if (!av_strcasecmp(val, (const char *)"dynamic"))
+            c->is_live = 1;
+        xmlFree(val);
+
+        attr = node->properties;
+        while (attr) {
+            val = xmlGetProp(node, attr->name);
+
+            if (!av_strcasecmp(attr->name, (const char *)"availabilityStartTime")) {
+                c->availability_start_time = get_utc_date_time_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->availability_start_time = [%"PRId64"]\n", c->availability_start_time);
+            } else if (!av_strcasecmp(attr->name, (const char *)"availabilityEndTime")) {
+                c->availability_end_time = get_utc_date_time_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->availability_end_time = [%"PRId64"]\n", c->availability_end_time);
+            } else if (!av_strcasecmp(attr->name, (const char *)"publishTime")) {
+                c->publish_time = get_utc_date_time_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->publish_time = [%"PRId64"]\n", c->publish_time);
+            } else if (!av_strcasecmp(attr->name, (const char *)"minimumUpdatePeriod")) {
+                c->minimum_update_period = get_duration_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->minimum_update_period = [%"PRId64"]\n", c->minimum_update_period);
+            } else if (!av_strcasecmp(attr->name, (const char *)"timeShiftBufferDepth")) {
+                c->time_shift_buffer_depth = get_duration_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->time_shift_buffer_depth = [%"PRId64"]\n", c->time_shift_buffer_depth);
+            } else if (!av_strcasecmp(attr->name, (const char *)"minBufferTime")) {
+                c->min_buffer_time = get_duration_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->min_buffer_time = [%"PRId64"]\n", c->min_buffer_time);
+            } else if (!av_strcasecmp(attr->name, (const char *)"suggestedPresentationDelay")) {
+                c->suggested_presentation_delay = get_duration_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->suggested_presentation_delay = [%"PRId64"]\n", c->suggested_presentation_delay);
+            } else if (!av_strcasecmp(attr->name, (const char *)"mediaPresentationDuration")) {
+                c->media_presentation_duration = get_duration_insec(s, (const char *)val);
+                av_log(s, AV_LOG_TRACE, "c->media_presentation_duration = [%"PRId64"]\n", c->media_presentation_duration);
+            }
+            attr = attr->next;
+            xmlFree(val);
+        }
+
+        tmp_node = find_child_node_by_name(node, "BaseURL");
+        if (tmp_node) {
+            mpd_baseurl_node = xmlCopyNode(tmp_node,1);
+        } else {
+            mpd_baseurl_node = xmlNewNode(NULL, "BaseURL");
+        }
+
+        // at now we can handle only one period, with the longest duration
+        node = xmlFirstElementChild(node);
+        while (node) {
+            if (!av_strcasecmp(node->name, (const char *)"Period")) {
+                period_duration_sec = 0;
+                period_start_sec = 0;
+                attr = node->properties;
+                while (attr) {
+                    val = xmlGetProp(node, attr->name);
+                    if (!av_strcasecmp(attr->name, (const char *)"duration")) {
+                        period_duration_sec = get_duration_insec(s, (const char *)val);
+                    } else if (!av_strcasecmp(attr->name, (const char *)"start")) {
+                        period_start_sec = get_duration_insec(s, (const char *)val);
+                    }
+                    attr = attr->next;
+                    xmlFree(val);
+                }
+                if ((period_duration_sec) >= (c->period_duration)) {
+                    period_node = node;
+                    c->period_duration = period_duration_sec;
+                    c->period_start = period_start_sec;
+                    if (c->period_start > 0)
+                        c->media_presentation_duration = c->period_duration;
+                }
+            } else if (!av_strcasecmp(node->name, "ProgramInformation")) {
+                parse_programinformation(s, node);
+            }
+            node = xmlNextElementSibling(node);
+        }
+        if (!period_node) {
+            av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing Period node\n", url);
+            ret = AVERROR_INVALIDDATA;
+            goto cleanup;
+        }
+
+        adaptionset_node = xmlFirstElementChild(period_node);
+        while (adaptionset_node) {
+            if (!av_strcasecmp(adaptionset_node->name, (const char *)"BaseURL")) {
+                period_baseurl_node = adaptionset_node;
+            } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"SegmentTemplate")) {
+                period_segmenttemplate_node = adaptionset_node;
+            } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"SegmentList")) {
+                period_segmentlist_node = adaptionset_node;
+            } else if (!av_strcasecmp(adaptionset_node->name, (const char *)"AdaptationSet")) {
+                parse_manifest_adaptationset(s, url, adaptionset_node, mpd_baseurl_node, period_baseurl_node, period_segmenttemplate_node, period_segmentlist_node);
+            }
+            adaptionset_node = xmlNextElementSibling(adaptionset_node);
+        }
+cleanup:
+        /*free the document */
+        xmlFreeDoc(doc);
+        xmlCleanupParser();
+        xmlFreeNode(mpd_baseurl_node);
+    }
+
+    av_free(new_url);
+    av_bprint_finalize(&buf, NULL);
+    if (close_in) {
+        avio_close(in);
+    }
+    return ret;
+}
+
+static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation *pls)
+{
+    DASHContext *c = s->priv_data;
+    int64_t num = 0;
+    int64_t start_time_offset = 0;
+
+    if (c->is_live) {
+        if (pls->n_fragments) {
+            av_log(s, AV_LOG_TRACE, "in n_fragments mode\n");
+            num = pls->first_seq_no;
+        } else if (pls->n_timelines) {
+            av_log(s, AV_LOG_TRACE, "in n_timelines mode\n");
+            start_time_offset = get_segment_start_time_based_on_timeline(pls, 0xFFFFFFFF) - 60 * pls->fragment_timescale; // 60 seconds before end
+            num = calc_next_seg_no_from_timelines(pls, start_time_offset);
+            if (num == -1)
+                num = pls->first_seq_no;
+            else
+                num += pls->first_seq_no;
+        } else if (pls->fragment_duration){
+            av_log(s, AV_LOG_TRACE, "in fragment_duration mode fragment_timescale = %"PRId64", presentation_timeoffset = %"PRId64"\n", pls->fragment_timescale, pls->presentation_timeoffset);
+            if (pls->presentation_timeoffset) {
+                num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time) * pls->fragment_timescale)-pls->presentation_timeoffset) / pls->fragment_duration - c->min_buffer_time;
+            } else if (c->publish_time > 0 && !c->availability_start_time) {
+                if (c->min_buffer_time) {
+                    num = pls->first_seq_no + (((c->publish_time + pls->fragment_duration) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration - c->min_buffer_time;
+                } else {
+                    num = pls->first_seq_no + (((c->publish_time - c->time_shift_buffer_depth + pls->fragment_duration) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration;
+                }
+            } else {
+                num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time) - c->suggested_presentation_delay) * pls->fragment_timescale) / pls->fragment_duration;
+            }
+        }
+    } else {
+        num = pls->first_seq_no;
+    }
+    return num;
+}
+
+static int64_t calc_min_seg_no(AVFormatContext *s, struct representation *pls)
+{
+    DASHContext *c = s->priv_data;
+    int64_t num = 0;
+
+    if (c->is_live && pls->fragment_duration) {
+        av_log(s, AV_LOG_TRACE, "in live mode\n");
+        num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time) - c->time_shift_buffer_depth) * pls->fragment_timescale) / pls->fragment_duration;
+    } else {
+        num = pls->first_seq_no;
+    }
+    return num;
+}
+
+static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c)
+{
+    int64_t num = 0;
+
+    if (pls->n_fragments) {
+        num = pls->first_seq_no + pls->n_fragments - 1;
+    } else if (pls->n_timelines) {
+        int i = 0;
+        num = pls->first_seq_no + pls->n_timelines - 1;
+        for (i = 0; i < pls->n_timelines; i++) {
+            if (pls->timelines[i]->repeat == -1) {
+                int length_of_each_segment = pls->timelines[i]->duration / pls->fragment_timescale;
+                num =  c->period_duration / length_of_each_segment;
+            } else {
+                num += pls->timelines[i]->repeat;
+            }
+        }
+    } else if (c->is_live && pls->fragment_duration) {
+        num = pls->first_seq_no + (((get_current_time_in_sec() - c->availability_start_time)) * pls->fragment_timescale)  / pls->fragment_duration;
+    } else if (pls->fragment_duration) {
+        num = pls->first_seq_no + (c->media_presentation_duration * pls->fragment_timescale) / pls->fragment_duration;
+    }
+
+    return num;
+}
+
+static void move_timelines(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
+{
+    if (rep_dest && rep_src ) {
+        free_timelines_list(rep_dest);
+        rep_dest->timelines    = rep_src->timelines;
+        rep_dest->n_timelines  = rep_src->n_timelines;
+        rep_dest->first_seq_no = rep_src->first_seq_no;
+        rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
+        rep_src->timelines = NULL;
+        rep_src->n_timelines = 0;
+        rep_dest->cur_seq_no = rep_src->cur_seq_no;
+    }
+}
+
+static void move_segments(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
+{
+    if (rep_dest && rep_src ) {
+        free_fragment_list(rep_dest);
+        if (rep_src->start_number > (rep_dest->start_number + rep_dest->n_fragments))
+            rep_dest->cur_seq_no = 0;
+        else
+            rep_dest->cur_seq_no += rep_src->start_number - rep_dest->start_number;
+        rep_dest->fragments    = rep_src->fragments;
+        rep_dest->n_fragments  = rep_src->n_fragments;
+        rep_dest->parent  = rep_src->parent;
+        rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
+        rep_src->fragments = NULL;
+        rep_src->n_fragments = 0;
+    }
+}
+
+
+static int refresh_manifest(AVFormatContext *s)
+{
+    int ret = 0, i;
+    DASHContext *c = s->priv_data;
+    // save current context
+    int n_videos = c->n_videos;
+    struct representation **videos = c->videos;
+    int n_audios = c->n_audios;
+    struct representation **audios = c->audios;
+    int n_subtitles = c->n_subtitles;
+    struct representation **subtitles = c->subtitles;
+    char *base_url = c->base_url;
+
+    c->base_url = NULL;
+    c->n_videos = 0;
+    c->videos = NULL;
+    c->n_audios = 0;
+    c->audios = NULL;
+    c->n_subtitles = 0;
+    c->subtitles = NULL;
+    ret = parse_manifest(s, s->url, NULL);
+    if (ret)
+        goto finish;
+
+    if (c->n_videos != n_videos) {
+        av_log(c, AV_LOG_ERROR,
+               "new manifest has mismatched no. of video representations, %d -> %d\n",
+               n_videos, c->n_videos);
+        return AVERROR_INVALIDDATA;
+    }
+    if (c->n_audios != n_audios) {
+        av_log(c, AV_LOG_ERROR,
+               "new manifest has mismatched no. of audio representations, %d -> %d\n",
+               n_audios, c->n_audios);
+        return AVERROR_INVALIDDATA;
+    }
+    if (c->n_subtitles != n_subtitles) {
+        av_log(c, AV_LOG_ERROR,
+               "new manifest has mismatched no. of subtitles representations, %d -> %d\n",
+               n_subtitles, c->n_subtitles);
+        return AVERROR_INVALIDDATA;
+    }
+
+    for (i = 0; i < n_videos; i++) {
+        struct representation *cur_video = videos[i];
+        struct representation *ccur_video = c->videos[i];
+        if (cur_video->timelines) {
+            // calc current time
+            int64_t currentTime = get_segment_start_time_based_on_timeline(cur_video, cur_video->cur_seq_no) / cur_video->fragment_timescale;
+            // update segments
+            ccur_video->cur_seq_no = calc_next_seg_no_from_timelines(ccur_video, currentTime * cur_video->fragment_timescale - 1);
+            if (ccur_video->cur_seq_no >= 0) {
+                move_timelines(ccur_video, cur_video, c);
+            }
+        }
+        if (cur_video->fragments) {
+            move_segments(ccur_video, cur_video, c);
+        }
+    }
+    for (i = 0; i < n_audios; i++) {
+        struct representation *cur_audio = audios[i];
+        struct representation *ccur_audio = c->audios[i];
+        if (cur_audio->timelines) {
+            // calc current time
+            int64_t currentTime = get_segment_start_time_based_on_timeline(cur_audio, cur_audio->cur_seq_no) / cur_audio->fragment_timescale;
+            // update segments
+            ccur_audio->cur_seq_no = calc_next_seg_no_from_timelines(ccur_audio, currentTime * cur_audio->fragment_timescale - 1);
+            if (ccur_audio->cur_seq_no >= 0) {
+                move_timelines(ccur_audio, cur_audio, c);
+            }
+        }
+        if (cur_audio->fragments) {
+            move_segments(ccur_audio, cur_audio, c);
+        }
+    }
+
+finish:
+    // restore context
+    if (c->base_url)
+        av_free(base_url);
+    else
+        c->base_url  = base_url;
+
+    if (c->subtitles)
+        free_subtitle_list(c);
+    if (c->audios)
+        free_audio_list(c);
+    if (c->videos)
+        free_video_list(c);
+
+    c->n_subtitles = n_subtitles;
+    c->subtitles = subtitles;
+    c->n_audios = n_audios;
+    c->audios = audios;
+    c->n_videos = n_videos;
+    c->videos = videos;
+    return ret;
+}
+
+static struct fragment *get_current_fragment(struct representation *pls)
+{
+    int64_t min_seq_no = 0;
+    int64_t max_seq_no = 0;
+    struct fragment *seg = NULL;
+    struct fragment *seg_ptr = NULL;
+    DASHContext *c = pls->parent->priv_data;
+
+    while (( !ff_check_interrupt(c->interrupt_callback)&& pls->n_fragments > 0)) {
+        if (pls->cur_seq_no < pls->n_fragments) {
+            seg_ptr = pls->fragments[pls->cur_seq_no];
+            seg = av_mallocz(sizeof(struct fragment));
+            if (!seg) {
+                return NULL;
+            }
+            seg->url = av_strdup(seg_ptr->url);
+            if (!seg->url) {
+                av_free(seg);
+                return NULL;
+            }
+            seg->size = seg_ptr->size;
+            seg->url_offset = seg_ptr->url_offset;
+            return seg;
+        } else if (c->is_live) {
+            refresh_manifest(pls->parent);
+        } else {
+            break;
+        }
+    }
+    if (c->is_live) {
+        min_seq_no = calc_min_seg_no(pls->parent, pls);
+        max_seq_no = calc_max_seg_no(pls, c);
+
+        if (pls->timelines || pls->fragments) {
+            refresh_manifest(pls->parent);
+        }
+        if (pls->cur_seq_no <= min_seq_no) {
+            av_log(pls->parent, AV_LOG_VERBOSE, "old fragment: cur[%"PRId64"] min[%"PRId64"] max[%"PRId64"]\n", (int64_t)pls->cur_seq_no, min_seq_no, max_seq_no);
+            pls->cur_seq_no = calc_cur_seg_no(pls->parent, pls);
+        } else if (pls->cur_seq_no > max_seq_no) {
+            av_log(pls->parent, AV_LOG_VERBOSE, "new fragment: min[%"PRId64"] max[%"PRId64"]\n", min_seq_no, max_seq_no);
+        }
+        seg = av_mallocz(sizeof(struct fragment));
+        if (!seg) {
+            return NULL;
+        }
+    } else if (pls->cur_seq_no <= pls->last_seq_no) {
+        seg = av_mallocz(sizeof(struct fragment));
+        if (!seg) {
+            return NULL;
+        }
+    }
+    if (seg) {
+        char *tmpfilename= av_mallocz(c->max_url_size);
+        if (!tmpfilename) {
+            return NULL;
+        }
+        ff_dash_fill_tmpl_params(tmpfilename, c->max_url_size, pls->url_template, 0, pls->cur_seq_no, 0, get_segment_start_time_based_on_timeline(pls, pls->cur_seq_no));
+        seg->url = av_strireplace(pls->url_template, pls->url_template, tmpfilename);
+        if (!seg->url) {
+            av_log(pls->parent, AV_LOG_WARNING, "Unable to resolve template url '%s', try to use origin template\n", pls->url_template);
+            seg->url = av_strdup(pls->url_template);
+            if (!seg->url) {
+                av_log(pls->parent, AV_LOG_ERROR, "Cannot resolve template url '%s'\n", pls->url_template);
+                av_free(tmpfilename);
+                return NULL;
+            }
+        }
+        av_free(tmpfilename);
+        seg->size = -1;
+    }
+
+    return seg;
+}
+
+static int read_from_url(struct representation *pls, struct fragment *seg,
+                         uint8_t *buf, int buf_size)
+{
+    int ret;
+
+    /* limit read if the fragment was only a part of a file */
+    if (seg->size >= 0)
+        buf_size = FFMIN(buf_size, pls->cur_seg_size - pls->cur_seg_offset);
+
+    ret = avio_read(pls->input, buf, buf_size);
+    if (ret > 0)
+        pls->cur_seg_offset += ret;
+
+    return ret;
+}
+
+static int open_input(DASHContext *c, struct representation *pls, struct fragment *seg)
+{
+    AVDictionary *opts = NULL;
+    char *url = NULL;
+    int ret = 0;
+
+    url = av_mallocz(c->max_url_size);
+    if (!url) {
+        ret = AVERROR(ENOMEM);
+        goto cleanup;
+    }
+
+    if (seg->size >= 0) {
+        /* try to restrict the HTTP request to the part we want
+         * (if this is in fact a HTTP request) */
+        av_dict_set_int(&opts, "offset", seg->url_offset, 0);
+        av_dict_set_int(&opts, "end_offset", seg->url_offset + seg->size, 0);
+    }
+
+    ff_make_absolute_url(url, c->max_url_size, c->base_url, seg->url);
+    av_log(pls->parent, AV_LOG_VERBOSE, "DASH request for url '%s', offset %"PRId64"\n",
+           url, seg->url_offset);
+    ret = open_url(pls->parent, &pls->input, url, &c->avio_opts, opts, NULL);
+
+cleanup:
+    av_free(url);
+    av_dict_free(&opts);
+    pls->cur_seg_offset = 0;
+    pls->cur_seg_size = seg->size;
+    return ret;
+}
+
+static int update_init_section(struct representation *pls)
+{
+    static const int max_init_section_size = 1024 * 1024;
+    DASHContext *c = pls->parent->priv_data;
+    int64_t sec_size;
+    int64_t urlsize;
+    int ret;
+
+    if (!pls->init_section || pls->init_sec_buf)
+        return 0;
+
+    ret = open_input(c, pls, pls->init_section);
+    if (ret < 0) {
+        av_log(pls->parent, AV_LOG_WARNING,
+               "Failed to open an initialization section\n");
+        return ret;
+    }
+
+    if (pls->init_section->size >= 0)
+        sec_size = pls->init_section->size;
+    else if ((urlsize = avio_size(pls->input)) >= 0)
+        sec_size = urlsize;
+    else
+        sec_size = max_init_section_size;
+
+    av_log(pls->parent, AV_LOG_DEBUG,
+           "Downloading an initialization section of size %"PRId64"\n",
+           sec_size);
+
+    sec_size = FFMIN(sec_size, max_init_section_size);
+
+    av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);
+
+    ret = read_from_url(pls, pls->init_section, pls->init_sec_buf,
+                        pls->init_sec_buf_size);
+    ff_format_io_close(pls->parent, &pls->input);
+
+    if (ret < 0)
+        return ret;
+
+    pls->init_sec_data_len = ret;
+    pls->init_sec_buf_read_offset = 0;
+
+    return 0;
+}
+
+static int64_t seek_data(void *opaque, int64_t offset, int whence)
+{
+    struct representation *v = opaque;
+    if (v->n_fragments && !v->init_sec_data_len) {
+        return avio_seek(v->input, offset, whence);
+    }
+
+    return AVERROR(ENOSYS);
+}
+
+static int read_data(void *opaque, uint8_t *buf, int buf_size)
+{
+    int ret = 0;
+    struct representation *v = opaque;
+    DASHContext *c = v->parent->priv_data;
+
+restart:
+    if (!v->input) {
+        free_fragment(&v->cur_seg);
+        v->cur_seg = get_current_fragment(v);
+        if (!v->cur_seg) {
+            ret = AVERROR_EOF;
+            goto end;
+        }
+
+        /* load/update Media Initialization Section, if any */
+        ret = update_init_section(v);
+        if (ret)
+            goto end;
+
+        ret = open_input(c, v, v->cur_seg);
+        if (ret < 0) {
+            if (ff_check_interrupt(c->interrupt_callback)) {
+                ret = AVERROR_EXIT;
+                goto end;
+            }
+            av_log(v->parent, AV_LOG_WARNING, "Failed to open fragment of playlist\n");
+            v->cur_seq_no++;
+            goto restart;
+        }
+    }
+
+    if (v->init_sec_buf_read_offset < v->init_sec_data_len) {
+        /* Push init section out first before first actual fragment */
+        int copy_size = FFMIN(v->init_sec_data_len - v->init_sec_buf_read_offset, buf_size);
+        memcpy(buf, v->init_sec_buf, copy_size);
+        v->init_sec_buf_read_offset += copy_size;
+        ret = copy_size;
+        goto end;
+    }
+
+    /* check the v->cur_seg, if it is null, get current and double check if the new v->cur_seg*/
+    if (!v->cur_seg) {
+        v->cur_seg = get_current_fragment(v);
+    }
+    if (!v->cur_seg) {
+        ret = AVERROR_EOF;
+        goto end;
+    }
+    ret = read_from_url(v, v->cur_seg, buf, buf_size);
+    if (ret > 0)
+        goto end;
+
+    if (c->is_live || v->cur_seq_no < v->last_seq_no) {
+        if (!v->is_restart_needed)
+            v->cur_seq_no++;
+        v->is_restart_needed = 1;
+    }
+
+end:
+    return ret;
+}
+
+static int save_avio_options(AVFormatContext *s)
+{
+    DASHContext *c = s->priv_data;
+    const char *opts[] = {
+        "headers", "user_agent", "cookies", "http_proxy", "referer", "rw_timeout", "icy", NULL };
+    const char **opt = opts;
+    uint8_t *buf = NULL;
+    int ret = 0;
+
+    while (*opt) {
+        if (av_opt_get(s->pb, *opt, AV_OPT_SEARCH_CHILDREN, &buf) >= 0) {
+            if (buf[0] != '\0') {
+                ret = av_dict_set(&c->avio_opts, *opt, buf, AV_DICT_DONT_STRDUP_VAL);
+                if (ret < 0)
+                    return ret;
+            } else {
+                av_freep(&buf);
+            }
+        }
+        opt++;
+    }
+
+    return ret;
+}
+
+static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
+                          int flags, AVDictionary **opts)
+{
+    av_log(s, AV_LOG_ERROR,
+           "A DASH playlist item '%s' referred to an external file '%s'. "
+           "Opening this file was forbidden for security reasons\n",
+           s->url, url);
+    return AVERROR(EPERM);
+}
+
+static void close_demux_for_component(struct representation *pls)
+{
+    /* note: the internal buffer could have changed */
+    av_freep(&pls->pb.buffer);
+    memset(&pls->pb, 0x00, sizeof(AVIOContext));
+    pls->ctx->pb = NULL;
+    avformat_close_input(&pls->ctx);
+}
+
+static int reopen_demux_for_component(AVFormatContext *s, struct representation *pls)
+{
+    DASHContext *c = s->priv_data;
+    ff_const59 AVInputFormat *in_fmt = NULL;
+    AVDictionary  *in_fmt_opts = NULL;
+    uint8_t *avio_ctx_buffer  = NULL;
+    int ret = 0, i;
+
+    if (pls->ctx) {
+        close_demux_for_component(pls);
+    }
+
+    if (ff_check_interrupt(&s->interrupt_callback)) {
+        ret = AVERROR_EXIT;
+        goto fail;
+    }
+
+    if (!(pls->ctx = avformat_alloc_context())) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    avio_ctx_buffer  = av_malloc(INITIAL_BUFFER_SIZE);
+    if (!avio_ctx_buffer ) {
+        ret = AVERROR(ENOMEM);
+        avformat_free_context(pls->ctx);
+        pls->ctx = NULL;
+        goto fail;
+    }
+    if (c->is_live) {
+        ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, NULL);
+    } else {
+        ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, seek_data);
+    }
+    pls->pb.seekable = 0;
+
+    if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
+        goto fail;
+
+    pls->ctx->flags = AVFMT_FLAG_CUSTOM_IO;
+    pls->ctx->probesize = s->probesize > 0 ? s->probesize : 1024 * 4;
+    pls->ctx->max_analyze_duration = s->max_analyze_duration > 0 ? s->max_analyze_duration : 4 * AV_TIME_BASE;
+    ret = av_probe_input_buffer(&pls->pb, &in_fmt, "", NULL, 0, 0);
+    if (ret < 0) {
+        av_log(s, AV_LOG_ERROR, "Error when loading first fragment of playlist\n");
+        avformat_free_context(pls->ctx);
+        pls->ctx = NULL;
+        goto fail;
+    }
+
+    pls->ctx->pb = &pls->pb;
+    pls->ctx->io_open  = nested_io_open;
+
+    if (c->cenc_decryption_key)
+        av_dict_set(&in_fmt_opts, "decryption_key", c->cenc_decryption_key, 0);
+
+    // provide additional information from mpd if available
+    ret = avformat_open_input(&pls->ctx, "", in_fmt, &in_fmt_opts); //pls->init_section->url
+    av_dict_free(&in_fmt_opts);
+    if (ret < 0)
+        goto fail;
+    if (pls->n_fragments) {
+#if FF_API_R_FRAME_RATE
+        if (pls->framerate.den) {
+            for (i = 0; i < pls->ctx->nb_streams; i++)
+                pls->ctx->streams[i]->r_frame_rate = pls->framerate;
+        }
+#endif
+        ret = avformat_find_stream_info(pls->ctx, NULL);
+        if (ret < 0)
+            goto fail;
+    }
+
+fail:
+    return ret;
+}
+
+static int open_demux_for_component(AVFormatContext *s, struct representation *pls)
+{
+    int ret = 0;
+    int i;
+
+    pls->parent = s;
+    pls->cur_seq_no  = calc_cur_seg_no(s, pls);
+
+    if (!pls->last_seq_no) {
+        pls->last_seq_no = calc_max_seg_no(pls, s->priv_data);
+    }
+
+    ret = reopen_demux_for_component(s, pls);
+    if (ret < 0) {
+        goto fail;
+    }
+    for (i = 0; i < pls->ctx->nb_streams; i++) {
+        AVStream *st = avformat_new_stream(s, NULL);
+        AVStream *ist = pls->ctx->streams[i];
+        if (!st) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
+        st->id = i;
+        avcodec_parameters_copy(st->codecpar, ist->codecpar);
+        avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num, ist->time_base.den);
+    }
+
+    return 0;
+fail:
+    return ret;
+}
+
+static int is_common_init_section_exist(struct representation **pls, int n_pls)
+{
+    struct fragment *first_init_section = pls[0]->init_section;
+    char *url =NULL;
+    int64_t url_offset = -1;
+    int64_t size = -1;
+    int i = 0;
+
+    if (first_init_section == NULL || n_pls == 0)
+        return 0;
+
+    url = first_init_section->url;
+    url_offset = first_init_section->url_offset;
+    size = pls[0]->init_section->size;
+    for (i=0;i<n_pls;i++) {
+        if (av_strcasecmp(pls[i]->init_section->url,url) || pls[i]->init_section->url_offset != url_offset || pls[i]->init_section->size != size) {
+            return 0;
+        }
+    }
+    return 1;
+}
+
+static int copy_init_section(struct representation *rep_dest, struct representation *rep_src)
+{
+    rep_dest->init_sec_buf = av_mallocz(rep_src->init_sec_buf_size);
+    if (!rep_dest->init_sec_buf) {
+        av_log(rep_dest->ctx, AV_LOG_WARNING, "Cannot alloc memory for init_sec_buf\n");
+        return AVERROR(ENOMEM);
+    }
+    memcpy(rep_dest->init_sec_buf, rep_src->init_sec_buf, rep_src->init_sec_data_len);
+    rep_dest->init_sec_buf_size = rep_src->init_sec_buf_size;
+    rep_dest->init_sec_data_len = rep_src->init_sec_data_len;
+    rep_dest->cur_timestamp = rep_src->cur_timestamp;
+
+    return 0;
+}
+
+static int dash_close(AVFormatContext *s);
+
+static int dash_read_header(AVFormatContext *s)
+{
+    DASHContext *c = s->priv_data;
+    struct representation *rep;
+    int ret = 0;
+    int stream_index = 0;
+    int i;
+
+    c->interrupt_callback = &s->interrupt_callback;
+
+    if ((ret = save_avio_options(s)) < 0)
+        goto fail;
+
+    if ((ret = parse_manifest(s, s->url, s->pb)) < 0)
+        goto fail;
+
+    /* If this isn't a live stream, fill the total duration of the
+     * stream. */
+    if (!c->is_live) {
+        s->duration = (int64_t) c->media_presentation_duration * AV_TIME_BASE;
+    } else {
+        av_dict_set(&c->avio_opts, "seekable", "0", 0);
+    }
+
+    if(c->n_videos)
+        c->is_init_section_common_video = is_common_init_section_exist(c->videos, c->n_videos);
+
+    /* Open the demuxer for video and audio components if available */
+    for (i = 0; i < c->n_videos; i++) {
+        rep = c->videos[i];
+        if (i > 0 && c->is_init_section_common_video) {
+            ret = copy_init_section(rep, c->videos[0]);
+            if (ret < 0)
+                goto fail;
+        }
+        ret = open_demux_for_component(s, rep);
+
+        if (ret)
+            goto fail;
+        rep->stream_index = stream_index;
+        ++stream_index;
+    }
+
+    if(c->n_audios)
+        c->is_init_section_common_audio = is_common_init_section_exist(c->audios, c->n_audios);
+
+    for (i = 0; i < c->n_audios; i++) {
+        rep = c->audios[i];
+        if (i > 0 && c->is_init_section_common_audio) {
+            ret = copy_init_section(rep, c->audios[0]);
+            if (ret < 0)
+                goto fail;
+        }
+        ret = open_demux_for_component(s, rep);
+
+        if (ret)
+            goto fail;
+        rep->stream_index = stream_index;
+        ++stream_index;
+    }
+
+    if (c->n_subtitles)
+        c->is_init_section_common_audio = is_common_init_section_exist(c->subtitles, c->n_subtitles);
+
+    for (i = 0; i < c->n_subtitles; i++) {
+        rep = c->subtitles[i];
+        if (i > 0 && c->is_init_section_common_audio) {
+            ret = copy_init_section(rep, c->subtitles[0]);
+            if (ret < 0)
+                goto fail;
+        }
+        ret = open_demux_for_component(s, rep);
+
+        if (ret)
+            goto fail;
+        rep->stream_index = stream_index;
+        ++stream_index;
+    }
+
+    if (!stream_index) {
+        ret = AVERROR_INVALIDDATA;
+        goto fail;
+    }
+
+    /* Create a program */
+    if (!ret) {
+        AVProgram *program;
+        program = av_new_program(s, 0);
+        if (!program) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
+
+        for (i = 0; i < c->n_videos; i++) {
+            rep = c->videos[i];
+            av_program_add_stream_index(s, 0, rep->stream_index);
+            rep->assoc_stream = s->streams[rep->stream_index];
+            if (rep->bandwidth > 0)
+                av_dict_set_int(&rep->assoc_stream->metadata, "variant_bitrate", rep->bandwidth, 0);
+            if (rep->id[0])
+                av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0);
+        }
+        for (i = 0; i < c->n_audios; i++) {
+            rep = c->audios[i];
+            av_program_add_stream_index(s, 0, rep->stream_index);
+            rep->assoc_stream = s->streams[rep->stream_index];
+            if (rep->bandwidth > 0)
+                av_dict_set_int(&rep->assoc_stream->metadata, "variant_bitrate", rep->bandwidth, 0);
+            if (rep->id[0])
+                av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0);
+            if (rep->lang) {
+                av_dict_set(&rep->assoc_stream->metadata, "language", rep->lang, 0);
+                av_freep(&rep->lang);
+            }
+        }
+        for (i = 0; i < c->n_subtitles; i++) {
+            rep = c->subtitles[i];
+            av_program_add_stream_index(s, 0, rep->stream_index);
+            rep->assoc_stream = s->streams[rep->stream_index];
+            if (rep->id[0])
+                av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0);
+            if (rep->lang) {
+                av_dict_set(&rep->assoc_stream->metadata, "language", rep->lang, 0);
+                av_freep(&rep->lang);
+            }
+        }
+    }
+
+    return 0;
+fail:
+    dash_close(s);
+    return ret;
+}
+
+static void recheck_discard_flags(AVFormatContext *s, struct representation **p, int n)
+{
+    int i, j;
+
+    for (i = 0; i < n; i++) {
+        struct representation *pls = p[i];
+        int needed = !pls->assoc_stream || pls->assoc_stream->discard < AVDISCARD_ALL;
+
+        if (needed && !pls->ctx) {
+            pls->cur_seg_offset = 0;
+            pls->init_sec_buf_read_offset = 0;
+            /* Catch up */
+            for (j = 0; j < n; j++) {
+                pls->cur_seq_no = FFMAX(pls->cur_seq_no, p[j]->cur_seq_no);
+            }
+            reopen_demux_for_component(s, pls);
+            av_log(s, AV_LOG_INFO, "Now receiving stream_index %d\n", pls->stream_index);
+        } else if (!needed && pls->ctx) {
+            close_demux_for_component(pls);
+            ff_format_io_close(pls->parent, &pls->input);
+            av_log(s, AV_LOG_INFO, "No longer receiving stream_index %d\n", pls->stream_index);
+        }
+    }
+}
+
+static int dash_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    DASHContext *c = s->priv_data;
+    int ret = 0, i;
+    int64_t mints = 0;
+    struct representation *cur = NULL;
+    struct representation *rep = NULL;
+
+    recheck_discard_flags(s, c->videos, c->n_videos);
+    recheck_discard_flags(s, c->audios, c->n_audios);
+    recheck_discard_flags(s, c->subtitles, c->n_subtitles);
+
+    for (i = 0; i < c->n_videos; i++) {
+        rep = c->videos[i];
+        if (!rep->ctx)
+            continue;
+        if (!cur || rep->cur_timestamp < mints) {
+            cur = rep;
+            mints = rep->cur_timestamp;
+        }
+    }
+    for (i = 0; i < c->n_audios; i++) {
+        rep = c->audios[i];
+        if (!rep->ctx)
+            continue;
+        if (!cur || rep->cur_timestamp < mints) {
+            cur = rep;
+            mints = rep->cur_timestamp;
+        }
+    }
+
+    for (i = 0; i < c->n_subtitles; i++) {
+        rep = c->subtitles[i];
+        if (!rep->ctx)
+            continue;
+        if (!cur || rep->cur_timestamp < mints) {
+            cur = rep;
+            mints = rep->cur_timestamp;
+        }
+    }
+
+    if (!cur) {
+        return AVERROR_INVALIDDATA;
+    }
+    while (!ff_check_interrupt(c->interrupt_callback) && !ret) {
+        ret = av_read_frame(cur->ctx, pkt);
+        if (ret >= 0) {
+            /* If we got a packet, return it */
+            cur->cur_timestamp = av_rescale(pkt->pts, (int64_t)cur->ctx->streams[0]->time_base.num * 90000, cur->ctx->streams[0]->time_base.den);
+            pkt->stream_index = cur->stream_index;
+            return 0;
+        }
+        if (cur->is_restart_needed) {
+            cur->cur_seg_offset = 0;
+            cur->init_sec_buf_read_offset = 0;
+            ff_format_io_close(cur->parent, &cur->input);
+            ret = reopen_demux_for_component(s, cur);
+            cur->is_restart_needed = 0;
+        }
+    }
+    return AVERROR_EOF;
+}
+
+static int dash_close(AVFormatContext *s)
+{
+    DASHContext *c = s->priv_data;
+    free_audio_list(c);
+    free_video_list(c);
+    free_subtitle_list(c);
+    av_dict_free(&c->avio_opts);
+    av_freep(&c->base_url);
+    return 0;
+}
+
+static int dash_seek(AVFormatContext *s, struct representation *pls, int64_t seek_pos_msec, int flags, int dry_run)
+{
+    int ret = 0;
+    int i = 0;
+    int j = 0;
+    int64_t duration = 0;
+
+    av_log(pls->parent, AV_LOG_VERBOSE, "DASH seek pos[%"PRId64"ms] %s\n",
+           seek_pos_msec, dry_run ? " (dry)" : "");
+
+    // single fragment mode
+    if (pls->n_fragments == 1) {
+        pls->cur_timestamp = 0;
+        pls->cur_seg_offset = 0;
+        if (dry_run)
+            return 0;
+        ff_read_frame_flush(pls->ctx);
+        return av_seek_frame(pls->ctx, -1, seek_pos_msec * 1000, flags);
+    }
+
+    ff_format_io_close(pls->parent, &pls->input);
+
+    // find the nearest fragment
+    if (pls->n_timelines > 0 && pls->fragment_timescale > 0) {
+        int64_t num = pls->first_seq_no;
+        av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline start n_timelines[%d] "
+               "last_seq_no[%"PRId64"].\n",
+               (int)pls->n_timelines, (int64_t)pls->last_seq_no);
+        for (i = 0; i < pls->n_timelines; i++) {
+            if (pls->timelines[i]->starttime > 0) {
+                duration = pls->timelines[i]->starttime;
+            }
+            duration += pls->timelines[i]->duration;
+            if (seek_pos_msec < ((duration * 1000) /  pls->fragment_timescale)) {
+                goto set_seq_num;
+            }
+            for (j = 0; j < pls->timelines[i]->repeat; j++) {
+                duration += pls->timelines[i]->duration;
+                num++;
+                if (seek_pos_msec < ((duration * 1000) /  pls->fragment_timescale)) {
+                    goto set_seq_num;
+                }
+            }
+            num++;
+        }
+
+set_seq_num:
+        pls->cur_seq_no = num > pls->last_seq_no ? pls->last_seq_no : num;
+        av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline end cur_seq_no[%"PRId64"].\n",
+               (int64_t)pls->cur_seq_no);
+    } else if (pls->fragment_duration > 0) {
+        pls->cur_seq_no = pls->first_seq_no + ((seek_pos_msec * pls->fragment_timescale) / pls->fragment_duration) / 1000;
+    } else {
+        av_log(pls->parent, AV_LOG_ERROR, "dash_seek missing timeline or fragment_duration\n");
+        pls->cur_seq_no = pls->first_seq_no;
+    }
+    pls->cur_timestamp = 0;
+    pls->cur_seg_offset = 0;
+    pls->init_sec_buf_read_offset = 0;
+    ret = dry_run ? 0 : reopen_demux_for_component(s, pls);
+
+    return ret;
+}
+
+static int dash_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
+{
+    int ret = 0, i;
+    DASHContext *c = s->priv_data;
+    int64_t seek_pos_msec = av_rescale_rnd(timestamp, 1000,
+                                           s->streams[stream_index]->time_base.den,
+                                           flags & AVSEEK_FLAG_BACKWARD ?
+                                           AV_ROUND_DOWN : AV_ROUND_UP);
+    if ((flags & AVSEEK_FLAG_BYTE) || c->is_live)
+        return AVERROR(ENOSYS);
+
+    /* Seek in discarded streams with dry_run=1 to avoid reopening them */
+    for (i = 0; i < c->n_videos; i++) {
+        if (!ret)
+            ret = dash_seek(s, c->videos[i], seek_pos_msec, flags, !c->videos[i]->ctx);
+    }
+    for (i = 0; i < c->n_audios; i++) {
+        if (!ret)
+            ret = dash_seek(s, c->audios[i], seek_pos_msec, flags, !c->audios[i]->ctx);
+    }
+    for (i = 0; i < c->n_subtitles; i++) {
+        if (!ret)
+            ret = dash_seek(s, c->subtitles[i], seek_pos_msec, flags, !c->subtitles[i]->ctx);
+    }
+
+    return ret;
+}
+
+static int dash_probe(const AVProbeData *p)
+{
+    if (!av_stristr(p->buf, "<MPD"))
+        return 0;
+
+    if (av_stristr(p->buf, "dash:profile:isoff-on-demand:2011") ||
+        av_stristr(p->buf, "dash:profile:isoff-live:2011") ||
+        av_stristr(p->buf, "dash:profile:isoff-live:2012") ||
+        av_stristr(p->buf, "dash:profile:isoff-main:2011") ||
+        av_stristr(p->buf, "3GPP:PSS:profile:DASH1")) {
+        return AVPROBE_SCORE_MAX;
+    }
+    if (av_stristr(p->buf, "dash:profile")) {
+        return AVPROBE_SCORE_MAX;
+    }
+
+    return 0;
+}
+
+#define OFFSET(x) offsetof(DASHContext, x)
+#define FLAGS AV_OPT_FLAG_DECODING_PARAM
+static const AVOption dash_options[] = {
+    {"allowed_extensions", "List of file extensions that dash is allowed to access",
+        OFFSET(allowed_extensions), AV_OPT_TYPE_STRING,
+        {.str = "aac,m4a,m4s,m4v,mov,mp4,webm,ts"},
+        INT_MIN, INT_MAX, FLAGS},
+    { "cenc_decryption_key", "Media decryption key (hex)", OFFSET(cenc_decryption_key), AV_OPT_TYPE_STRING, {.str = NULL}, INT_MIN, INT_MAX, .flags = FLAGS },
+    {NULL}
+};
+
+static const AVClass dash_class = {
+    .class_name = "dash",
+    .item_name  = av_default_item_name,
+    .option     = dash_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVInputFormat ff_dash_demuxer = {
+    .name           = "dash",
+    .long_name      = NULL_IF_CONFIG_SMALL("Dynamic Adaptive Streaming over HTTP"),
+    .priv_class     = &dash_class,
+    .priv_data_size = sizeof(DASHContext),
+    .read_probe     = dash_probe,
+    .read_header    = dash_read_header,
+    .read_packet    = dash_read_packet,
+    .read_close     = dash_close,
+    .read_seek      = dash_read_seek,
+    .flags          = AVFMT_NO_BYTE_SEEK,
+};