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PipeWire 0.3.77 Released
(gitlab.freedesktop.org)
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this post was submitted on 04 Aug 2023
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Ow you are right. I wasn't aware of the video part of Pipewire. Which allows very low latency video recording as well.
Fun fact: with the proper plugins, you can capture both the video and the output of a particular window / process in OBS, giving you a stream of exactly that and nothing else (which you can then mix with other sources). Very handy for streaming if you don't want to include voice chat (for privacy reasons) or background music (DMCA takedown on VODs).
However, for capturing Vulkan games, I recommend the vkcapture plugin. It acts as a Vulkan layer and is very performant, plus I get the impression it works better with Freesync.
I hate OBS under Linux still doesn't allow me to use the GPU (using AMD videocard) for encoding.
AMD's encoders are garbage, but if you insist, you can use VA-API to get accelerated encoding in the output advanced settings.