我正在尝试弄清楚为什么复制视频后字幕也会启用。
鉴于以下情况：
ffmpeg -i "in.mkv" -c:v copy -c:a copy -c:s copy -map_metadata 0 -map 0 out.mkv
那么out.mkv应该与相同in.mkv。
但是，in.mkv在 mpv 或 vlc 中播放时，默认情况下字幕是关闭的。播放时out.mkv默认打开第一个字幕轨道。两个视频中都有所有字幕，只有容器发生了变化。
两个视频之间有什么变化？我需要在命令中更改哪些内容才能让 ffmpeg 复制字幕确切地就像它们在源头一样？
mkvinfo每个的输出
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| + String: 00:10:19.097645833
| + Simple
| + Name: NUMBER_OF_FRAMES
| + Tag language: eng
| + String: 364
| + Simple
| + Name: NUMBER_OF_BYTES
| + Tag language: eng
| + String: 3046132
| + Simple
| + Name: SOURCE_ID
| + Tag language: eng
| + String: 001209
| + Simple
| + Name: _STATISTICS_WRITING_APP
| + Tag language: eng
| + String: MakeMKV v1.17.5 linux(x64-release)
| + Simple
| + Name: _STATISTICS_WRITING_DATE_UTC
| + Tag language: eng
| + String: 2024-02-23 13:33:12
| + Simple
| + Name: _STATISTICS_TAGS
| + Tag language: eng
| + String: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
| + Simple
| + Name: DURATION
| + String: 00:10:22.685000000
| + Tag
| + Targets
| + Track UID: 5915465592480181972
| + Simple
| + Name: BPS
| + Tag language: eng
| + String: 35966
| + Simple
| + Name: DURATION
| + Tag language: eng
| + String: 00:10:19.097645833
| + Simple
| + Name: NUMBER_OF_FRAMES
| + Tag language: eng
| + String: 346
| + Simple
| + Name: NUMBER_OF_BYTES
| + Tag language: eng
| + String: 2783377
| + Simple
| + Name: SOURCE_ID
| + Tag language: eng
| + String: 00120A
| + Simple
| + Name: _STATISTICS_WRITING_APP
| + Tag language: eng
| + String: MakeMKV v1.17.5 linux(x64-release)
| + Simple
| + Name: _STATISTICS_WRITING_DATE_UTC
| + Tag language: eng
| + String: 2024-02-23 13:33:12
| + Simple
| + Name: _STATISTICS_TAGS
| + Tag language: eng
| + String: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
| + Simple
| + Name: DURATION
| + String: 00:10:22.685000000
|+ Cluster
我缺少什么选项才能让 ffmpeg 准确复制字幕？
我可以设置s:disposition，但我想使用原始视频中的值