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识别部分`presentationTimeOffset`

This commit is contained in:
nilaoda 2022-11-17 22:15:23 +08:00
parent acb8f62f97
commit 616da62f74
1 changed files with 6 additions and 1 deletions
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7
src/N_m3u8DL-RE.Parser/Extractor/DASHExtractor2.cs
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@ -300,6 +300,8 @@ namespace N_m3u8DL_RE.Parser.Extractor
var varDic = new Dictionary<string, object?>(); var varDic = new Dictionary<string, object?>();
varDic[DASHTags.TemplateRepresentationID] = streamSpec.GroupId; varDic[DASHTags.TemplateRepresentationID] = streamSpec.GroupId;
varDic[DASHTags.TemplateBandwidth] = bandwidth?.Value; varDic[DASHTags.TemplateBandwidth] = bandwidth?.Value;
//presentationTimeOffset
var presentationTimeOffsetStr = segmentTemplate.Attribute("presentationTimeOffset")?.Value ?? segmentTemplateOuter.Attribute("presentationTimeOffset")?.Value ?? "0";
//timesacle //timesacle
var timescaleStr = segmentTemplate.Attribute("timescale")?.Value ?? segmentTemplateOuter.Attribute("timescale")?.Value ?? "1"; var timescaleStr = segmentTemplate.Attribute("timescale")?.Value ?? segmentTemplateOuter.Attribute("timescale")?.Value ?? "1";
var durationStr = segmentTemplate.Attribute("duration")?.Value ?? segmentTemplateOuter.Attribute("duration")?.Value; var durationStr = segmentTemplate.Attribute("duration")?.Value ?? segmentTemplateOuter.Attribute("duration")?.Value;
@ -318,7 +320,7 @@ namespace N_m3u8DL_RE.Parser.Extractor
if (segmentTimeline != null) if (segmentTimeline != null)
{ {
//使用了SegmentTimeline 结果精确 //使用了SegmentTimeline 结果精确
var segNumber = Convert.ToInt32(startNumberStr); var segNumber = Convert.ToInt64(startNumberStr);
var Ss = segmentTimeline.Elements().Where(e => e.Name.LocalName == "S"); var Ss = segmentTimeline.Elements().Where(e => e.Name.LocalName == "S");
var currentTime = 0L; var currentTime = 0L;
var segIndex = 0; var segIndex = 0;
@ -373,6 +375,9 @@ namespace N_m3u8DL_RE.Parser.Extractor
{ {
var now = publishTime == null ? DateTime.Now : DateTime.Parse(publishTime); var now = publishTime == null ? DateTime.Now : DateTime.Parse(publishTime);
var availableTime = DateTime.Parse(availabilityStartTime!); var availableTime = DateTime.Parse(availabilityStartTime!);
//可用时间+偏移量
var offsetMs = TimeSpan.FromMilliseconds(Convert.ToInt64(presentationTimeOffsetStr) / 1000);
availableTime = availableTime.Add(offsetMs);
var ts = now - availableTime; var ts = now - availableTime;
var updateTs = XmlConvert.ToTimeSpan(timeShiftBufferDepth!); var updateTs = XmlConvert.ToTimeSpan(timeShiftBufferDepth!);
//(当前时间到发布时间的时间差 - 最小刷新间隔) / 分片时长 //(当前时间到发布时间的时间差 - 最小刷新间隔) / 分片时长