ximagesrc is super choppy on Linux on high end hardware...

[Davide Perini]

I'm using GStreamer Java and still trying to understand how make it work 
with Wayland...
not that simple for me since it requires additional knowledge...


Il 25/10/2023 00:58, Nicolas Dufresne via gstreamer-devel ha scritto:
> Hi,
>
> Le mar. 24 oct. 2023, 16 h 00, Davide Perini via gstreamer-devel 
> <gstreamer-devel at lists.freedesktop.org> a écrit :
>
>     Hi,
>
>     I'm using a simple pipeline like this
>     gst-launch-1.0 ximagesrc startx=0 endx=3800 starty=0 endy=2150 !
>     videoscale ! videoconvert ! autovideosink
>
>     on Ubuntu 23.10 using an AMD Ryzen 9 7950X3D and an Nvidia RTX4090.
>
>     Video drivers are correctly installed since I can play games at very
>     high framerate...
>
>     When I try to record the screen with the pipeline above, the screen
>     became choppy, mouse starts lagging and the screen record get two or
>     three frames per second.
>
>     How this is possible?
>
>
> X11 capture requires copying frames out of the GPU memory, which is 
> very slow on modern GPUs.
>
>
>     What can I do to troubleshoot this problem?
>
>
> I would discourage from spending time on this, and suggest using the 
> screen cast portal and a Wayland session.
>
> Nicolas
>
>
>
>     Thanks
>
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