Efficiently displaying video in Qt application

[Carlos Rafael Giani]

Take a look at qmlglsink. It does exactly what you want to do.

On 19.10.20 19:53, Tyler Compton wrote:
> Hi everyone,
>
> I have a pipeline that uses VA-API to hardware decode some video 
> streams so they can be displayed on a Qt application. Right now, I'm 
> doing the simple thing and converting the results from a 
> DMABuf/VASurface to a regular GStreamer buffer, passing them to an 
> appsink, and displaying the frames manually. This is a fairly 
> inefficient process, however.
>
> I'm wondering if it's possible to display a DMABuf/VASurface directly 
> on-screen within my Qt application. My hunch is that I could do this 
> by creating an OpenGL context in Qt and routing the results there, but 
> I'm having trouble putting all the pieces together. Would someone mind 
> pointing me in the right direction?
>
> Thanks,
> Tyler
>
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