I am using the sample_multi_transcode in MediaSdk to transcode a h264 file from 1080p to 720p. I want to try different scaling mode. so the scaling mode is configured with a mfxExtVppScaling structure in function "CTranscodingPipeline::InitVppMfxParams(sInputParams pInParams)" in pipeline_transcode.cpp as described in the mediasdk manual . And the scaling mode value is printed in function VideoVPPHW::SyncTaskSubmission(DdiTask pTask)", which shows the scaling mode has been set successfully, but the final result makes no difference. So I am wondering how to configure the scaling mode.
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