A video in MP4 imported in Blender doesn't workdoesn't work. I can seesee the video in the preview, but when I render it, it is transformed in a single image.
UPDATE
I create I created a new project, selectselected the camera, and then drag&drop .MP4drag'n'dropped an MP4 video on scenein the viewport.
I createcreated a new 3d3D object that rotaterotates in front of MP4the video layer.
3dThe 3D object renderrenders correctly, but the video notdoesn't play.
OnlyThe video plays correctly only in preview mode, video play correctly.