On Wed, 01 Jul 2020 at 12:48, Frederic Turmel wrote:
> Hi, our application is leveraging VAAPI x264 encode and also has the
> requirement that a monitor may or may not be connected to the GPU output.
>
> When no display is connected with wayland the VAAPI plugging fail during
> init with this error and fail to initialized vaapih264enc:
>
> *:00:00.003987000 26531 0x564aa0e27b20 ERROR vaapidisplay
> gstvaapidisplay_wayland.c:150:gst_vaapi_display_wayland_setup: failed to
> determine the display size0:00:00.004037000 26531 0x564aa0e27b20 ERROR
> default gstvaapi.c:239:plugin_init: Cannot create a VA display*
>
> We do not see this problem when using X output.
>
> Example to repro when running in SSH remote session:
> XDG_RUNTIME_DIR=/tmp/.Xweston/\:0 gst-launch-1.0 videotestsrc
> num-buffers=1000 ! vaapih264enc ! fakesink --gst-debug=vaapidisplay:5
That's odd. If you enable libdrm & libudev at compilation time, DRM backend is
enabled and it is chosen in run-time if no display is found. How do you compile
gstreamer-vaapi?
>
> XDG_RUNTIME_DIR=/tmp/.Xweston/\:0 gst-inspect-1.0 vaapi
> gst-instpect vaapi will report 0 features. which is expected since the init
> of vaapi fails
>
> We are using Weston on ubuntu 18 This could be a bug in the vaapi init
> plugin or we are missing something in our system/weston config?
>
> Thanks
> FredT
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