[FFmpeg-user] ffmpeg command required to convert MPEG TS to HLS with transcoding to aac

[Robin van der Linden]

Hello,

ffmpeg can do this, at least some parts. It will create the segments and a master.m3u8 file for each track by itself. Still you will need to create master.m3u8 File wich references all the tracks master.m3u8 yourself. My Script is about 3500 lines long, so be prepared that you have to code lot yourself.

Im currently on the go, but I will try to provide you some more advice. Are you about to encode a single Video or do you need a full implemented rapackaging process for many vidz?


Kind regards,

Robin

________________________________
Von: Mahesh Velankar <mvelanka at gmail.com>
Gesendet: Samstag, 10. Dezember 2022 19:53
An: ffmpeg-user at ffmpeg.org
Betreff: [FFmpeg-user] ffmpeg command required to convert MPEG TS to HLS with transcoding to aac 

I have a transport stream file with following details (given by ffprobe) 

Input #0, mpegts, from 'f-13324-ccrtpa_before_tc_1669374838.ts': 
  Duration: 00:04:23.44, start: 8879.809433, bitrate: 2373 kb/s 
  Program 3 
    Stream #0:0[0x31]: Video: h264 (Main) ([27][0][0][0] / 0x001B), 
yuv420p(tv, bt709, progressive), 856x480 [SAR 320:321 DAR 16:9], Closed 
Captions, 30 fps, 29.97 tbr, 90k tbn, 60 tbc 
    Stream #0:1[0x34](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
5.1(side), fltp, 320 kb/s 
    Stream #0:2[0x35](spa): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
stereo, fltp, 192 kb/s (visual impaired) 
    Stream #0:3[0x36]: Data: klv (KLVA / 0x41564C4B) 


I want to convert this into HLS playlists and segments. The requirements 
are as follows 
There will be two playlists 

playlist 1 will have a listing of TS segments. Each such segment will have 
1. Video stream (Stream #0:0) from the above input (h264) and 
2. Audio stream 1 (Stream #0:1) from the above input (ac3 5.1) .... but 
converted to aac format 

playlist 2 will have a listing of TS segments. Each such segment will have 
1. Video stream (Stream #0:0) from the above input (h264) and 
2. Audio stream 2 (Stream #0:2) from the above input (ac3 stereo) .... but 
converted to aac format 

In short the output segments will have one video and one audio stream. 
Since there are two audio streams I need to convert it into two different 
playlists ... each having video and one of the audio streams 

ac3 to aac conversion is mandatory,  as it has to be played in the browser. 

How can I achieve this with the ffmpeg command line? Please help or point 
me to any such recipe if already available. 

Thanks 
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