Import Your Own MP4s Into GoPro Quik

GoPro Quik scans your MP4 media and refuses to load them into the app if they didn't originate from a GoPro device. You can fake out Quik by adding GoPro metadata to your MP4 metadata.

ffmpeg -i unsupported_input.mp4 -c:v copy -c:a copy -metadata:s:v:0 handler="GoPro AVC" supported_output.mp4`