Bug 62008

Summary: [ILK] Low ssim value with MPEG2 files
Product: libva Reporter: Du Yan <yanx.du>
Component: intelAssignee: haihao <haihao.xiang>
Status: VERIFIED WONTFIX QA Contact: Sean V Kelley <seanvk>
Severity: normal    
Priority: medium CC: ouping.zhang
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Du Yan 2013-03-08 06:16:32 UTC 
System Environment:
--------------------------
Libva: master 9f4dedc4de014cc665c32dfbac1c017f9396b563
Intel driver: master 82d6940694c7a650642ccb6d68bf01b70dba4dcc
Platform:ILK


Bug Info
------------------
Low ssim value with MPEG2 files

e.g.

file name Y SSIM extreme Y SSIM average	U SSIM extreme	U SSIM average	V SSIM extreme	V SSIM average

bits_conf_lep_11.bits 0.976785 0.989264	0.207009 0.339677 0.192062 0.327734
gi4_video.bits	0.988589 0.991809 0.344178 0.359352 0.350964 0.367575
gi6_bit_stream	0.988237 0.991699 0.348083 0.360713 0.35904 0.372847
gi7_bit_stream	0.988298 0.991716 0.347874 0.360477 0.358957 0.372688
gi9_bit_stream	0.988732 0.991338 0.486867 0.509427 0.495609 0.519777

gi4_video.bits start from 1st frame, low ssim

Y_SSIM = 0.998583
U_SSIM = 0.369789
V_SSIM = 0.375072
Comment 1 haihao 2013-03-18 06:51:29 UTC 
We won't fix MPEG-2 conformance issue on legacy platform which doesn't have fixed function for MPEG-2 decoding.

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