I am running into a problem when using the sample_vpp application to scale yuy2 video. In this test I used the compiled sample_vpp.exe provided in the MediaSDK installation. Note that this same process does work with rgb4 input and output.
Test case 1: sample_vpp -lib sw -sw 1920 -sh 1080 -scc yuy2 -dw 960 -dh 540 -dcc yuy2 -n 1 -i aspen.yuv -o aspen_scaled.yuv
The output image is the correct size but appears to be in a planar format based on trying to view in YUVTools. So then I tried not scaling by keeping the output size to match the input size: