Is there a way to crop in VAAPI?

[kmliu]

> If I read the code correctly, then vaapipostproc already suppports>
GstVideoCropMeta. So I think you could do ... ! vaapih264dec !>
vaapipostproc ! ... and add a pad probe that adds the crop meta to each>
buffer.> MichaelIsn't GstVideoCropMeta just a tag that "tells" the
downstream elements that the frame should be cropped? I'm not sure if it
would reduce the amount of data copied from graphics memory to main memory.



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