this post was submitted on 02 Dec 2024
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In not sure what difference it makes. AMD already supports VAAPI for accelerated video encoding/decoding.
The video quality for encoding has always been bad with AMD.
I'm hoping that by using Vulkan we can bypass poor quality encoders in drivers and get standardised accelerated encoders.
From my understanding, it's the hardware that produces bad results. There's no encoding logic in the drivers itself. That's why the encoding is accelerated in the first place.
E.g. if the hardware doesn't support b-frames – which for long it didn't – a new driver won't do jack. This is just about how video data gets into and out of the card, any encoding logic is handled by the hardware.
If the driver is no longer using a dedicated piece of encoding hardware thats shit, but using the Vulkan logic then surely the quality would be essentially guaranteed by it being Vulkan conformant?
The hardware wouldn't support b-frames in this scenario, and wouldn't matter because your just using the standard matrixes to encode the stream and if it didn't work then surely games would also be broken.
Or am I incorrect. Is this just standardising the API in Vulkan and it gets forwarded to the same video encoding driver? Could we not have Mesa doing a better job? 😒
It's about adding API to Vulkan for access to the hardware encoding units that you're complaining about.
This is how I would read it. But if you have Mesa do it, it's in software, and you might just be using a software coded directly then, it's much easier.
I wrote Mesa but meant ffmpeg. Wishful thinking that they are able to make a generic ffmpeg encoder in Vulkan to allow it to be accelerated in hardware but not relying on bad video driver codecs.
Oh well, back to Intel.