stream 16: subtitle (dvdsub), -sid 10, -slang por stream 15: subtitle (dvdsub), -sid 9, -slang nor stream 14: subtitle (dvdsub), -sid 8, -slang ice stream 13: subtitle (dvdsub), -sid 7, -slang fin stream 12: subtitle (dvdsub), -sid 6, -slang dut stream 11: subtitle (dvdsub), -sid 5, -slang dan

stream 10: subtitle (dvdsub), -sid 4, -slang ara stream 9: subtitle (dvdsub), -sid 3, -slang spa stream 8: subtitle (dvdsub), -sid 2, -slang ita stream 7: subtitle (dvdsub), -sid 1, -slang fre stream 6: subtitle (dvdsub), -sid 0, -slang eng stream 5: audio (ac3), -aid 4, -alang eng, Stereo stream 4: audio (ac3), -aid 3, -alang spa, Surround 5.1 stream 3: audio (ac3), -aid 2, -alang ita, Surround 5.1 stream 2: audio (ac3), -aid 1, -alang fre, Surround 5.1 stream 1: audio (ac3), -aid 0, -alang eng, Surround 5.1 The current input file I'm working with has these streams, but other files will have different streams. Now I can't figure out how to let ffmpeg pick its default video stream and default audio stream and then all subtitles. I want to write a generic command that works without me having to specify exact stream numbers.

I'm trying to re-encode video streams from a Matroska file to save space, while keeping all the subtitles as-is, using ffmpeg.

Ffmpeg copy video reencode audio