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App to record screen ?
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whizse Oct 5, 2020
Quoting: VinouchI found exactly what I need.

A small GUI to record in VAAPI:

https://github.com/Philippe734/tiny.vaapi.recorder
Nice!

You might want to remove the preset option though. It has no effect with vaapi, it's a libx264 setting.

You might also want to experiment with using constant quality in lossless mode (if you don't mind large files) using -qp 0 instead of VBR. I seem to recall getting better results with that, but it probably varies from system to system.
whizse Oct 5, 2020
Quoting: ShmerlAlso, I wonder what's the method in the Wayland session where x11grab is not an option. I suppose there must be some ffmpeg / Pipewire integration for that?
kmsgrab as mentioned in the thread previously, skips those nasty roundtrips to the CPU.
Shmerl Oct 5, 2020
Quoting: whizsekmsgrab as mentioned in the thread previously, skips those nasty roundtrips to the CPU.

That doesn't sound like a good method - it requires some explicit permissions access that's not on compositor level. The proper way would be something like pipewire and access controlled by the compositor. For less trips, it can be using DMA-BUF.

Last edited by Shmerl on 5 October 2020 at 9:52 pm UTC
whizse Oct 5, 2020
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