See Alternative movie playback plugins at the top of HOW TO: Enable/fix playback of various media formats in Opus for a potential quick fix for MP4 files.
PNG images should not be any slower than any other viewer.
See Alternative movie playback plugins at the top of HOW TO: Enable/fix playback of various media formats in Opus for a potential quick fix for MP4 files.
PNG images should not be any slower than any other viewer.