shaka-packager/packager/app/mpd_flags.cc

86 lines
4.0 KiB
C++

// Copyright 2014 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
//
// Defines Mpd flags.
#include "packager/app/mpd_flags.h"
DEFINE_bool(generate_static_live_mpd,
false,
"Set to true to generate static mpd. If segment_template is "
"specified in stream descriptors, shaka-packager generates dynamic "
"mpd by default; if this flag is enabled, shaka-packager generates "
"static mpd instead. Note that if segment_template is not "
"specified, shaka-packager always generates static mpd regardless "
"of the value of this flag.");
DEFINE_bool(output_media_info,
false,
"Create a human readable format of MediaInfo. The output file name "
"will be the name specified by output flag, suffixed with "
"'.media_info'.");
DEFINE_string(mpd_output, "", "MPD output file name.");
DEFINE_string(base_urls,
"",
"Comma separated BaseURLs for the MPD. The values will be added "
"as <BaseURL> element(s) immediately under the <MPD> element.");
DEFINE_double(min_buffer_time,
2.0,
"Specifies, in seconds, a common duration used in the definition "
"of the MPD Representation data rate.");
DEFINE_double(minimum_update_period,
5.0,
"Indicates to the player how often to refresh the media "
"presentation description in seconds. This value is used for "
"dynamic MPD only.");
DEFINE_double(suggested_presentation_delay,
0.0,
"Specifies a delay, in seconds, to be added to the media "
"presentation time. This value is used for dynamic MPD only.");
DEFINE_string(utc_timings,
"",
"Comma separated UTCTiming schemeIdUri and value pairs for the "
"MPD. This value is used for dynamic MPD only.");
DEFINE_bool(generate_dash_if_iop_compliant_mpd,
true,
"Try to generate DASH-IF IOP compliant MPD. This is best effort "
"and does not guarantee compliance.");
DEFINE_bool(
allow_approximate_segment_timeline,
false,
"For live profile only. "
"If enabled, segments with close duration (i.e. with difference less than "
"one sample) are considered to have the same duration. This enables MPD "
"generator to generate less SegmentTimeline entries. If all segments are "
"of the same duration except the last one, we will do further optimization "
"to use SegmentTemplate@duration instead and omit SegmentTimeline "
"completely."
"Ignored if $Time$ is used in segment template, since $Time$ requires "
"accurate Segment Timeline.");
DEFINE_bool(allow_codec_switching,
false,
"If enabled, allow adaptive switching between different codecs, "
"if they have the same language, media type (audio, video etc) and "
"container type.");
DEFINE_bool(include_mspr_pro_for_playready,
true,
"If enabled, PlayReady Object <mspr:pro> will be inserted into "
"<ContentProtection ...> element alongside with <cenc:pssh> "
"when using PlayReady protection system.");
DEFINE_bool(dash_force_segment_list,
false,
"Uses SegmentList instead of SegmentBase. Use this if the "
"content is huge and the total number of (sub)segment references "
"is greater than what the sidx atom allows (65535). Currently "
"this flag is only supported in DASH ondemand profile.");
DEFINE_bool(
low_latency_dash_mode,
false,
"If enabled, LL-DASH streaming will be used, "
"reducing overall latency by decoupling latency from segment duration. "
"Please see "
"https://google.github.io/shaka-packager/html/tutorials/low_latency.html "
"for more information.");