Video format rules for Ark MUSE video widget
For optimum page loading times, aim to keep your video under 10mb.
Around 30 seconds works best for a cover/background video.
Video will look best in any 16:9 aspect ratio resolution.
1920 x 1080 is the most popular, but all resolutions should work, just consider file size.
For your video to work on iOS you must use square pixels, anamorphic pixels will not work.
.mp4 (MPEG-4) is recommended, as this is compatible across all platforms including iOS.
Use a variable bit rate (VBR)
Set your target at 2Mbps with a maximum of 2.5Mbps
Field order - Set this to 'Progressive' to enable pre-loading and faster buffering times
Multiplexer - MP4
Streaming compatibility - iPod