ffmpeg-docker

This is a static-build ffmpeg, built with this script, in a scratch container for easy use anywhere, with "non-free" codecs enabled.

Invoke it with something like this:

docker run -it --rm -v /path/to/files:/path/to/files \
  cr.gitlab.alfter.us/salfter/ffmpeg-docker \
  /path/to/files/infile.mkv -c copy -f mp4 /path/to/files/outfile.m4v

Note that the third line is just arguments passed to ffmpeg.

ffprobe is also available:

docker run -it --rm -v /path/to/files:/path/to/files \
  --entrypoint /usr/bin/ffprobe cr.gitlab.alfter.us/salfter/ffmpeg-docker \
  /path/to/files/infile.mkv