I can no longer import mp4 in photoshop

Hello, recently I can no longer watch and import mp4 in photoshop.
When I drag an mp4 from bridge into photohop, it comes in as a blank layer, with a size of 320 by 240
does anyone know how to solve this?
i never had that problem before
regards

I tried to attach a screenshot here but I could not do it, it stated that type of image was not allowed, although it was a small jpg