Mp4 not compatible anymore

Hello, since the new update that removed mp4 compatibility, how to include video in a filter?
Mp4 provided a good way to have a video background at a low memory usage cost. Now the only option is to use a png or jpeg sequence, which is much higher in memory usage, and/or extremely lower in quality (since the images need to be extremely compressed), and also has a maximum size of 1024x1024, which makes it blurry if I want to use it as a background video.
Is there another option for this please?
Thank you!