clipper -- automatically cut videos out of footage

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