For months I've been living with an ongoing problem; when I watch some YouTube videos, the entire window will go black while the audio continues. I searched for solutions, which usually suggested the I turn off ad-blocking (which I don't recall turning on) and I was offered instructions to go to "OPTIONS" which doesn't exist on my version of FireFox, and no HELP articles offered a better solution. It seems that lots of people have this problem but MOZILLA ignores it or CANNOT fix it. But I found a FIX. I no longer have this problem with YouTube. YouTube is a GOOGLE product, so I installed the CHROME browser. I think my FireFox related YouTube problems are now a thing of the past. I would URGE MOZILLA to recognize the RUMBLE.com app and develope RUMBLE optimization tools similar to those that Mozilla developed for YouTube. RUMBLE is the free-speed answer to YouTube and is NOT owned by GOOGLE. It would be a no-brainer for MOZILLA to strongly support RUMBLE, but they act as though they've never heard of it. WAKE UP, HIPPIES!