I'm Nick, a video engineer at Mux! We can support almost any valid h264 file :D In an ideal world, you'd send 1080p high profile h264 encoded with a bitrate a

I'm Nick, a video engineer at Mux! We can support almost any valid h264 file :D In an ideal world, you'd send 1080p high profile h264 encoded with a bitrate above 8Mbps (or CRF 18 for x264 nerds), with a max keyframe interval of around 5 seconds. Closed GOPs also makes processing more efficient.