This one specifically converts video bitrate to 400k, frame rate to 15/s and audio bitrate to 128k for all MOV files in the current folder:
for i in *.mov; do ffmpeg -i "$i" -b:v 400k -r 15 -b:a 128k "${i%.mov}"-400k.mov; done
This one specifically converts video bitrate to 400k, frame rate to 15/s and audio bitrate to 128k for all MOV files in the current folder:
for i in *.mov; do ffmpeg -i "$i" -b:v 400k -r 15 -b:a 128k "${i%.mov}"-400k.mov; done