Flootay FFmpeg

This is a fork of FFmpeg that just adds a video filter to overlay a flootay script onto a video.

In order to enable the flootay filter, make sure you first install the flootay library somewhere so that the FFmpeg configure script can find the pkg-config file. Then enable the dependencies when you configure ffmpeg with a command like this:

./configure --enable-flootay --enable-cairo

Once FFmpeg is built you can use the filter like this:

ffmpeg -i my-input-video.mp4 \
       -vf flootay=filename=overlay.flt \
       my-output-video.mp4

There is some documentation about the flootay language in the flootay repo.