libmfxsw64.dll VPP erroneous artifacts

[celli4]

Using the sample 'simple_6_decode_vpp_postproc' from the latest tutorials by Jeffrey Mcallister, I am seeing noisy/buggy video being output.

I have not modified the tutorial example, I am using it as-delivered.

I have isolated the problem.  Using hardware  mode (-hw) does not show the problem.

Also, using the tutorial simple_2_decode does not exhibit the problem.

I am using the following .BAT script to exhibit the problem. This tutorial sample resizes to 50% by 50% so use NV12 160x90 with your YUV viewer.

rem problem seen on Xeon E3 1225 v3   / Windows x64  / hw driver 10.18.14.4080 
rem problem witnessed with      libmfxsw64.dll  4.13.6.21
rem problem witnessed with      libmfxsw64.dll  6.14.11.28

rem THIS CREATES THREE FILES, ONE WITH ERRONEOUS  ARTIFACTS, AND TWO WITHOUT

simple_decode_vpp_pp.exe -hw  "E:\w\BigBuckBunny_320x180.264" good.bbb180.sw.nv12.yuv
simple_decode.exe -sw  "E:\w\BigBuckBunny_320x180.264" good2.bbb180.sw.nv12.yuv
simple_decode_vpp_pp.exe -sw  "E:\w\BigBuckBunny_320x180.264" bad.bbb180.sw.nv12.yuv

[Surbhi_M_Intel]

Hi,

Thanks for giving us a detailed analysis to look into. simple_6_decode_vpp_postproc has a known limitation mentioned in the tutorial release notes. Copied from there "Working with SW Media SDK library simple 6 decode vpp postproc tutorial may produce artifacts (no artifacts should be observed on HW library)."
We are hoping to fix the problem in the future releases. 

Thanks,
-Surbhi