Gstremer vaapi pipeline to change color space

[Víctor Jáquez]

On Tue, 09 Oct 2018 at 10:35, Andressio wrote:
> Thank you Victor for your reply.
> 
> It works because the pipeline started grabbing frames. This is currently the
> end of the pipeline
> /.. ! rtph264depay ! vaapih264dec ! vaapipostproc ! video/x-raw,format=BGRx
> ! videoconvert ! appsink/
> 
> Still the cpu is very close to 80%. By exploring the opencv code of the
> gstreamer backend seems that opencv accepts at most 3 channels. This means a
> copy is necessary. Will explore further.
> 
> Could you please tell me how did you get that infomation regarding i915
> dirver? Is there a way to force to use it? Because I've installed /vainfo/,
> /intel-vaapi-dirver/ and /gstreamer/ via apt and if I launch the command
> /vainfo/, i965 driver are opened.

If you run the pipeline with debug of vaapipostproc:5 you'll see the list for
formats that the driver can convert to, given the current stream.

vmjl

> 
> 
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