The VideoLAN Forums

Thank you, Rémi. That explains it. (I'm using the spectrum visualizer. I'll try the other ones to see if any of them can be rendered.)

Hey, bumping this topic because I want this too, and I've spent a couple of hours trying to get it to work without any success. (The use case is publishing an audio podcast on YouTube.)

Can someone please please give a pointer, or at least tell us that it's impossible?