I have this situation:
- file1.mkv (video with two 5.1 tracks and several subtitles)
- file1.mka (two stereo audio tracks)
I want to merge the files to a single output that has:
- 4 audio tracks (the 5.1 original tracks and the other two from the MKA file)
- the subtitles from the MKV
Here's the command I'm trying:
@ffmpeg.exe -i "file1.mkv" -i "file1.mka" -map 1 -map 0 -c:v copy -c:a copy -c:s copy "output.mkv"
The problem is that output.mkv does indeed have everything, but the tracks from the MKA are mute, and some players even crash when I try to play them. The other two tracks (from original MKV) work just fine.
Is there something I'm doing wrong?