well, it *probably* tried to download a "blob:httрs://..." chunked video stream to a single file, but stucked at 43% for unknown reason(even if FF console continued to print video chunk requests) and there was no way to cancel/reset/restart/etc.

from other side, it has no built-in spam and it neither begs for money nor bullshits with Intellectoilet® Property™ and other copyrastic idiotia propaganda.
so, this *could be* a great tool with just a small bug spoiling the picture. the thing is i need an extra tool in the room VLC sucks now - a chunked stream without m3u8 descriptor. this is the case it could beat VLC easely ;)