Intel gpu top performance when encoder is added to a decoder-display pipeline

[nishithaa]

I have a pipeline to decode mp4 file :
filesrc location= s1.mp4 ! qtdemux ! h264parse ! vaapih264dec ! queue ! vaapipostproc ! vaapisink

The intel_gpu_top result
ENGINE BUSY
Render/3D/0 3.32%
Blitter/0 0.00%
Video/0 0.00%
Video/1 5.56%
VideoEnhance/0 5.84%

Then another pipeline to scale down and encode this video parallel to decoding :
filesrc location= s1.mp4 ! qtdemux ! queue ! h264parse ! vaapih264dec ! tee name=t t.src_0 ! queue ! vaapipostproc ! vaapisink
t.src_1 ! queue ! vaapipostproc ! width=1280, height=720 ! vaapih264enc bitrate=4500 ! h264parse ! qtmux ! filesink location=encodefile.mp4

     ENGINE      BUSY
Render/3D/0    5.40% 
  Blitter/0    0.00% 
    Video/0    2.22% 
    Video/1    0.91% 

VideoEnhance/0 4.05%

I expected gpu load to increase in this case, but its reduced. May I know why ?

[SGaist]

Hi,

This looks rather like a question for the GStreamer folks.