Summary.

Expected Result

VR Videos download like any other

Actual Result

VR videos aren't found, because the tag structure is different

I don't know if you still mess with this project, but wanted to at least let you know that when trying to download a video that SB plays in its VR Player, the page structure is different so it doesn't find the video.

I'm attempting to fix this on my side, and will post a PR if I do but obviously I'm not as familiar with your code :)