popnwave
1:41 AM - 12 November, 2015
They say:
6. Which video software is compatible with your videos?
A: We deliver in MP4 video format encoded with H264 so you can use our videos with virtually any video editing and format supported software. If your software requires the videos in a different format or encoding, you can use the free program MPEG Streamclip: video converter for Mac & Windows to convert the loops.
So it should work just fine.. I've never downloaded one of their clips so I can't speak from personal experience.