I'm a little new to the beatmapping scene, so this might be a mistake on my part. However, I can't get it to work when I try to add my background video. The MP3 worked just fine, but when I tried adding the MP4, it wouldn't load in. I didn't get any pop-up messages or anything of the sort. I have the "background video" box ticked in the options, the game mode is mania and the video is only around 15 seconds long, so is the MP3. Does anyone know how to fix this? Thank you!