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As well as only working when nothing is rendered on top of the video, like overlays, subtitles etc. Note that this limitation comes purely from HW/compositors - from the app side it is supported and works quite well on e.g. #weston, which already implements sophisticated hw plane management.


This is kinda a technology preview in order to see if we can ship features like this enabled by default in a lot more apps in the ecosystem.

Thus I'd be very super happy if you'll try it on lots of hardware - be Intel/AMD laptops or ARM64 devices (with V4L2 stateless decoders, such as most #LinuxMobile devices).

Chances that you really hit a zero-copy path are highest with a recent #Wayland compositor - i.e. if you are using #GNOME46, #kde6 or a recent version of #sway, #weston, #cosmic etc.