Problem with MediaPlayer in Unreal 5.0-5.1

Hello, I have a doubt regarding the latest version of Unreal (from version 5.0). In previous versions, I have no problem creating a “movies” folder inside “content” and putting a .mp4 sequence there. I import this sequence into Unreal as a MediaSource, then create the MediaPlayer with its texture and material (which I will apply to a plane in the scene). In previous versions of Unreal, when I press play (after creating the OpenSource with its corresponding MediaSource in the open level blueprint), it works and plays without a problem. In Unreal versions 5.0 and 5.1, it always appears black and I can’t get it to play. Could you please indicate a solution to the problem?

following. i have the same issue but with pre keyed .mov files, but the mp4 works fine.

I have the same problem with UE version 5.0.3. When I import a video (mp4 or mov) and want to play it in the media player, I only get the sound, not the image.