How do you convert an entire directory with ffmpeg?

Question

How do you convert an entire directory/folder with ffmpeg via command line or with a batch script?

Answer 1

@Linux To convert a bunch, my one liner is this, as example (.avi to .mkv) in same directory:

for f in *.avi; do ffmpeg -i "${f}" "${f%%.*}.mkv"; done

please observe the double "%%" in the output statement. It gives you not only the first word or the input filename, but everything before the last dot.