ffmpeg.txt

Record with timer: 
ffmpeg -f avfoundation -s 1280x720 -i "1:0" -vf "drawtext=fontfile=/Users/hanford/Hellix-Black.otf:text='%{pts\:gmtime\:0\:%M\\\\\:%S}':fontcolor=white@1:borderw=8:bordercolor=black:x=w-tw-192:y=h-th-192:fontsize=230" no-bun-startup.mkv

crop video in two (left/right) parts:
ffmpeg -i bun-page.mp4 -filter_complex "[0]crop=iw/2:ih:0:0[left];[0]crop=iw/2:ih:ow:0[right]" -map "[left]" left.mp4 -map "[right]" right.mp4


Convert video from mkv to mp4
ffmpeg -i np-page.mkv -pix_fmt yuv420p np-page.mp4

Combine two videos into one side by side
ffmpeg -i right2.mp4 -i right.mp4 -filter_complex hstack out.mp4