Optimise video

[alex-moon]

It would be nice if we can make the filesize for the videos smaller.

Multiple ways to do this: https://unix.stackexchange.com/questions/28803/how-can-i-reduce-a-videos-size-with-ffmpeg

Most straightforward:

ffmpeg -y -i input.mp4 -c:v libx264 -crf 22 -preset veryslow -tune film output.mp4