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N_m3u8DL-RE
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优化点播`ttml`字幕时间轴计算

This commit is contained in:
nilaoda 2022-11-28 11:56:45 +08:00
parent 703bd162b4
commit d96a45251b
1 changed files with 32 additions and 14 deletions
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46
src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
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@ -13,6 +13,7 @@ using N_m3u8DL_RE.Util;
using Spectre.Console;
using Spectre.Console.Rendering;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Text;
@ -350,15 +351,8 @@ namespace N_m3u8DL_RE.DownloadManager
{
vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
}
if (first)
{
finalVtt = vtt;
first = false;
}
else
{
finalVtt.AddCuesFromOne(vtt);
}
if (first) { finalVtt = vtt; first = false; }
else finalVtt.AddCuesFromOne(vtt);
}
//写出字幕
var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
@ -421,8 +415,20 @@ namespace N_m3u8DL_RE.DownloadManager
&& streamSpec.Extension != null && streamSpec.Extension.Contains("ttml"))
{
Logger.WarnMarkUp(ResString.fixingTTML);
var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".ttml")).ToArray();
var finalVtt = MP4TtmlUtil.ExtractFromTTMLs(mp4s, 0);
var first = true;
var finalVtt = new WebVttSub();
var keys = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Key);
foreach (var seg in keys)
{
var vtt = MP4TtmlUtil.ExtractFromTTMLs(new string[] { FileDic[seg]!.ActualFilePath }, 0);
//手动计算MPEGTS
if (finalVtt.MpegtsTimestamp == 0 && vtt.MpegtsTimestamp == 0)
{
vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
}
if (first) { finalVtt = vtt; first = false; }
else finalVtt.AddCuesFromOne(vtt);
}
//写出字幕
var firstKey = FileDic.Keys.First();
var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
@ -471,9 +477,21 @@ namespace N_m3u8DL_RE.DownloadManager
//var initFile = FileDic.Values.Where(v => Path.GetFileName(v!.ActualFilePath).StartsWith("_init")).FirstOrDefault();
//var iniFileBytes = File.ReadAllBytes(initFile!.ActualFilePath);
//var sawTtml = MP4TtmlUtil.CheckInit(iniFileBytes);
var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).ToArray();
var segmentDurMs = FileDic.Where(s => s.Value.ActualFilePath.EndsWith(".m4s")).First().Key.Duration * 1000;
var finalVtt = MP4TtmlUtil.ExtractFromMp4s(mp4s, (long)segmentDurMs);
var first = true;
var finalVtt = new WebVttSub();
var keys = FileDic.OrderBy(s => s.Key.Index).Where(v => v.Value!.ActualFilePath.EndsWith(".m4s")).Select(s => s.Key);
foreach (var seg in keys)
{
var vtt = MP4TtmlUtil.ExtractFromMp4s(new string[] { FileDic[seg]!.ActualFilePath }, 0);
//手动计算MPEGTS
if (finalVtt.MpegtsTimestamp == 0 && vtt.MpegtsTimestamp == 0)
{
vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
}
if (first) { finalVtt = vtt; first = false; }
else finalVtt.AddCuesFromOne(vtt);
}
//写出字幕
var firstKey = FileDic.Keys.First();
var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();