Yeah, this sounds stupid, but hear me out. So why would I just want an image with a song playing in the background? Well the MP4 files corrscope outputs are very storage efficient, and it's what I've been using to render VGM YouTube uploads. I use a modified version currently, but I thought the option was worth adding in the base version. It's not the most useful feature but it's pretty convenient for those who can make use of it.