this post was submitted on 02 Aug 2024
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Politely, not the worst compared to what, exactly?
It's way worse than qsv, nvenc, x264 or x265 which are basically the only hardware or cpu options you're likely to run into doing plex transcoding.
I don't have QSV or NVENC hardware to compare, but AMD is perfectly fine in most cases.
I mostly noticed quality drop with very busy scenes and some scene transitions.
Outside of those the quality was acceptable.
I'd say on my setup it's comparable to software encoding with x264 veryfast preset.
And my GPU is 5 years old now, so I'm sure newer cards have improved.
QSV is a very good product, high-quality and efficient. It’s also very mature, lots of signage in large deployments. I’ve tried AMD’s AMF streaming and at lower bit-rates you get a lot more blocking. It’s fine but QSV has an edge.
https://www.pcworld.com/article/827992/tested-intel-arc-av1-video-encoder-vs-nvidia-amd.html
Lower quality at any given bitrate was my experience too. For local stuff it didn't really matter: if I could do 3x the bitrate to get the same quality, then meh, who cares.
If you're streaming/doing shit over the internet/encoding for something like Youtube, though, it's uh, not a good tradeoff because you can't necessarily even make that tradeoff.
I think AMF is still faster/better quality than CPU transcoding, depending on the preset.