This script downloads a given youtube video, calculates the audio beat rate, and uses it as a soundtrack for a video of random beat-matched clips of your footage.

Here's an example of output: https://youtu.be/BMyqhdsilVo

The invocation to to get this video was:

bin/clipper --youtube-audio aiumJ_nDkhs \
           --length 227 --bitrate 5000k \
           --output sierranevada.mp4 \
           --multiplier 4 --seed sierranevada \
           ~/Video/Sierra\ Nevada\ bike/YDXJ*.mp4

Also, there is an option to output a Shotcut project file that can be edited and rendered there:

bin/clipper --shotcut --output myproject.mlt \
            --audio-path ~/Music/music.mp3 \
            --seed Magic \
            ~/Videos/GoPro/*.MP4