> It usually works fine with video players like mplayer but not in browsers. Chrome doesn't support VA-API, so do not bother trying. Some distributions do hav

> It usually works fine with video players like mplayer but not in browsers. Chrome doesn't support VA-API, so do not bother trying. Some distributions do have Chromium builds with VA-API support enabled, but YMMV. Chromium uses X11 only and libva requires dri2, so it doesn't work under XWayland, which supports only dri3. (=> Chromium with VA-API works only in native X11 session) Firefox does support VA-API. There was a period of time, when it did only under Wayland, but nowadays both X11 and Wayland should work. When running under Wayland, use the native version and /not/ via XWayland, because the same thing as with Chromium applies.