this post was submitted on 04 Aug 2023
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PipeWire 0.3.77 (2023-08-04)

This is a quick bugfix release that is API and ABI compatible with previous 0.3.x releases.

Highlights

  • Fix a bug in ALSA source where the available number of samples was miscaluclated and resulted in xruns in some cases.
  • A new L permission was added to make it possible to force a link between nodes even when the nodes can't see each other.
  • The VBAN module now supports midi send and receive as well.
  • Many cleanups and small fixes.
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[–] [email protected] 3 points 1 year ago (1 children)

True, and it's fabulous for video as well.

[–] [email protected] 2 points 1 year ago (1 children)

Ow you are right. I wasn't aware of the video part of Pipewire. Which allows very low latency video recording as well.

[–] [email protected] 3 points 1 year ago* (last edited 1 year ago) (1 children)

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.

[–] [email protected] 1 points 1 year ago (2 children)

I hate OBS under Linux still doesn't allow me to use the GPU (using AMD videocard) for encoding.

[–] [email protected] 3 points 1 year ago (1 children)

Don't blame OBS, AMD's video encoding is awful in a multitude of ways

[–] [email protected] 1 points 1 year ago (1 children)

owh..? I was hoping it was open-source. Some standard API. or something...

[–] [email protected] 1 points 1 year ago

As someone said, there are ways to get it working in OBS.

Does it expose the full feature set using VA-API? I have no clue. I was never able to actually hit the bitrate I wanted.

Please note that cards until the RX 6000 generation do not support B-frames.

[–] [email protected] 2 points 1 year ago

AMD's encoders are garbage, but if you insist, you can use VA-API to get accelerated encoding in the output advanced settings.