Maya.mp4 -

If you need to import an MP4 into Maya to use as a background for tracing movements:

Use the Maya Hardware 2.0 renderer to output a sequence of frames, then compile them into an MP4 using video editing software. Quick Tips for Maya Video Workflow Maya.mp4

If you use an MP4 on an image plane, it may drastically slow down your viewport. If it does, switch the image plane's display mode to None when you aren't actively using it as a reference. codec issues - Forums, Autodesk If you need to import an MP4 into

By default, Maya often only supports .avi (Windows) or .mov (Mac) for playblasts. How to Get an MP4: codec issues - Forums, Autodesk By default, Maya

In Maya, create an and check the box for Use Image Sequence .

Use a tool like FFmpeg or Shutter Encoder to export your MP4 as a series of images.

If your video won't load, it is likely a missing system-level codec rather than a Maya bug.