Ffmpeg Convert a Video Using a Specific Audio and Subtitle Track
fleetingffmpgeg -i thefile
#+RESULT
Stream #0:0: Video: h264 (High), yuv420p(tv, smpte170m/smpte170m/bt709, progressive), 640x480 [SAR 1:1 DAR 4:3], 29.97 fps, 29.97 tbr, 1k tbn (default)
Stream #0:1(eng): Audio: aac (LC), 48000 Hz, stereo, fltp (default)
Metadata:
title : Stereo
Stream #0:2(fra): Audio: aac (LC), 48000 Hz, stereo, fltp
Metadata:
title : Stereo
Stream #0:3(eng): Subtitle: dvd_subtitle, 720x480
Say I want to use the second audio track and the first subtitle track
ffmpeg -i thefile -map 0:a:1 -map 0:s:0 -map 0:v:0 outfile
I need to specify the map for the video also, or it will be dropped by the command
Also, I don’t understand the first 0:, but the command should be understood as
- -map 0:a:1
- take the second track (the first is 0, the second is 1),
- -map 0:s:0
- take the first subtitle track
- -map 0:v:0
- take the first video track