Here’s why it doesn’t matter:

“AOMedia Video 1 (AV1) is an open, royalty-free video coding format initially designed for video transmissions over the Internet. It was developed as a successor to VP9 by the Alliance for Open Media (AOMedia),[3] a consortium founded in 2015 that includes semiconductor firms, video on demand providers, video content producers, software development companies and web browser vendors.”

en.wikipedia.org/wiki/AV1

Here’s why it does matter

Most server hardware thats out there right now doesn’t support av1 encoding, so all of those, literally tens of thousands of them in thousands of spread out data centers have to be replaced with brand new +$1,500 a pop cards that do support it before they can use it

I was gonna say, I like AV1, but my Plex server says otherwise.

I’m using a 15 year old i5 and a GTX 970, having no issues with AV1 video. Curious what hardware you’re running.

I doubt that it’s doing real time transcoding in av1, probably just sending the file “as-is” to your client device and you’re noticing as modern networks allow real time streaming of files with that size

My server with much newer components does like 5 fps in encoding av1

were you trying the default av1 encoder in ffmpeg? that one is unoptimized try libsvtav1 I get hundreds of fps, albeit on a 9800x3d

just the default encoder. I tried it only once and when I saw the FPS I gave up almost immediately