function video_compress --argument-names srcfile if test -z "$srcfile" echo "Error: missing argument" return 1 end if not test -f "$srcfile" echo "Error: not a regular file: $srcfile" return 2 end if not command --search --quiet HandBrakeCLI echo "Error: HandBrakeCLI is required" return 3 end # Output: srcfile.extension -> srcfile-compressed.mp4 set --local dstfile (string split -r -m1 . $srcfile)[1]-compressed.mp4 set --local preset 'Vimeo YouTube HQ 720p60' HandBrakeCLI --preset $preset --input $srcfile --output $dstfile end