File source : check.mp4 (gồm luồng audio và subtitle)

ffprobe check.mp4 

Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv, progressive), 640x360 [SAR 1:1 DAR 16:9], 998 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 23.98 tbc (default)
Metadata:
  handler_name    : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 7.1, fltp, 128 kb/s (default)
Metadata:
  handler_name    : SoundHandler
Stream #0:2(und): Subtitle: mov_text (tx3g / 0x67337874), 640x360, 0 kb/s (default)
Metadata:
  handler_name    : SubtitleHandler
Stream #0:3(eng): Subtitle: mov_text (tx3g / 0x67337874), 640x360, 0 kb/s
Metadata:
  handler_name    : SubtitleHandler
Stream #0:4(eng): Data: bin_data (text / 0x74786574)

1. SUBTITLE

Tách file sub :

ffmpeg -i check.mp4 -map 0:2 -f webvtt sub.vtt

or

ffmpeg -i check.mp4 -map 0:s:0 -f webvtt sub.vtt

HLS SUBTITLE :

ffmpeg -i sub.vtt -f segment -segment_time 10 -segment_list_size 0 -segment_list subtitle/sub.m3u8 -segment_format webvtt -scodec copy subtitle/sub-%d.vtt

2. AUDIO

HLS audio :

ffmpeg -i check.mp4 -threads 0 -muxdelay 0 -y -map 0:1 -codec copy -f segment -segment_time 10 -segment_list_size 0 -segment_list audio/audio.m3u8 -segment_format mpegts audio/audio_%d.aac

3. VIDEO

Converse clip H265 > H264 :

ffmpeg -i check.mp4 -threads 0 -muxdelay 0 -y -pix_fmt yuv420p -movflags +faststart -r 29.97 -g 60 -refs 1 -vcodec libx264 -profile:v baseline -scodec copy -f mpegts check.ts

HLS video :

ffmpeg -i check.ts -threads 0 -muxdelay 0 -y -map 0:v -vcodec copy -f hls -hls_time 10 -hls_list_size 0 video/index.m3u8

4. File M3U8

index.m3u8 :

#EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",NAME="Vietnamese",FORCED=NO,AUTOSELECT=YES,URI="subtitle/sub.m3u8",LANGUAGE="vi"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="aac",LANGUAGE="en",NAME="English",DEFAULT=YES,AUTOSELECT=YES,URI="audio/audio.m3u8",
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=520929,CODECS="avc1.4d4015,mp4a.40.2",RESOLUTION=640x360,AUDIO="aac",SUBTITLES="subs"
video/index.m3u8

Ghi chú / Note

Bạn có thể gộp chung tất cả command trên lại thành 1 dòng :

ffmpeg -i check.mp4 -map 0:s:0 -f webvtt -  | ffmpeg -i -  -f segment -segment_time 10 -segment_list_size 0 -segment_list subtitle/sub.m3u8 -segment_format webvtt -scodec copy subtitle/sub-%d.vtt | ffmpeg -i check.mp4 -threads 0 -muxdelay 0 -y -map 0:a:0 -codec copy -f segment -segment_time 10 -segment_list_size 0 -segment_list audio/audio.m3u8 -segment_format mpegts audio/audio_%d.aac | ffmpeg -i check.mp4 -threads 0 -muxdelay 0 -y -pix_fmt yuv420p -movflags +faststart -r 29.97 -g 60 -refs 1 -vcodec libx264 -profile:v baseline -scodec copy -f mpegts -  | ffmpeg -i -  -threads 0 -muxdelay 0 -y -map 0:v -vcodec copy -f hls -hls_time 10 -hls_list_size 0 video/index.m3u8

DOWNLOAD LAB TEST

Full file : https://drive.google.com/file/d/1rU6yhN_DSpILi1i8OalTl4VtJt5WlzSN/view

Clip test (check.mp4) : http://www.mediafire.com/file/3johtl8ffd3uolx/check.mp4