In Maya, create an and check the box for Use Image Sequence .
MP4 files use temporal compression, which makes "scrubbing" (dragging) through the timeline laggy or inaccurate as Maya tries to calculate compressed frames. Maya.mp4
Some third-party plugins can force real-time MP4 playback on image planes by using custom FFmpeg builds . Exporting MP4 via Playblast In Maya, create an and check the box for Use Image Sequence
A "Playblast" is a way to preview your animation without a full render. Maya.mp4
If you need to import an MP4 into Maya to use as a background for tracing movements:
By default, Maya often only supports .avi (Windows) or .mov (Mac) for playblasts. How to Get an MP4: