Watch local 2D videos in passthrough without PC

It's been asked before but it's been a few months so I'm curious if any apps have figured it out.

I want to be able to watch regular 2D content loaded as MP4 files onto my Quest 3. Easy enough, bigsceen can do that. But I'd like to be able to do it in passthrough mode so I can see my surroundings while watching. At this point everyone suggests virtual desktop or a mirad of streaming to browser options.

But I'd really like to be able to achieve this without the need for a PC or even an internet connection. Is there any way to make that happen?