Build FFmpeg on pull request

Bump ffmpeg-source from `46775e6` to `ad6347f` #219

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Delete older pre-releases	2s
build (win64)	31m 14s
build (win32)	30m 53s
release	0s
	1h 2m 9s