How to use ffmpeg stream copy within bash "for loop"?

user_13602944 0
Viewed 154

ok i have this and it works but it's slow

for i in *.mov;
  do name=`echo "$i" | cut -d'.' -f1`
  echo "$name"
  ffmpeg -i "$i" "${name}.mp4"
done

I want it to convert with these ffmpeg options

ffmpeg -i movie.mov -vcodec copy -acodec copy out.mp4
ffmpeg macos shell bash
3 Answers

Parameter expansion is sufficient; you don't need pipelines involving cut.

for i in *.mov; do
    name=${i%%.mov}  # i=foo.mov => name=foo
    ffmpeg -i "$i" "$name.mp4"
done
user_11268410

Untested, but you should be able to do them in parallel with GNU Parallel if it's too slow and you have a multicore CPU:

parallel ffmpeg -i {} -vcodec copy -acodec copy {.}.mp4 ::: *.mov

If you want to see what it would do first, without actually doing anything:

parallel --dry-run ffmpeg -i {} -vcodec copy -acodec copy {.}.mp4 ::: *.mov

Note: On macOS, install these two packages simply with homebrew using:

brew install ffmpeg
brew install parallel
user_28366210
user_11090170
Related