Bug 57933 - [SNB IVB HSW] Poor quality when decoding teracom_vlc4 (MPEG2)
Summary: [SNB IVB HSW] Poor quality when decoding teracom_vlc4 (MPEG2)
Status: VERIFIED INVALID
Alias: None
Product: libva
Classification: Unclassified
Component: intel (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: haihao
QA Contact: Ouping Zhang
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-12-06 03:09 UTC by Du Yan
Modified: 2013-03-13 01:14 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments

Description Du Yan 2012-12-06 03:09:01 UTC 
Environment:
--------------
Platform: SGB
Libva: (staging)
commit 38c94cd922473095814ed9a9f99ad98fcc9c285d
Intel-driver: (staging)
commit c0ef9d99df37ae45589fecb898727be495e50304


Bug Info:
--------------
teracom_vlc4
Y SSIM extreme 0.998978
Y SSIM average 0.999544
U SSIM extreme 0.999991
U SSIM average 0.999992
V SSIM extreme 0.999995
V SSIM average 0.999995
Frame NO. 65
Dumped Frame NO. 64
Lost Frame 1

Reproduce steps:
--------------
1. xinit&
2. mplayer -nosound -fps 1000 -va vaapi -vo vaapi teracom_vlc4.bin

stream path: /media/Fedora.FrameWork/MPEG2_conformance/bitstreams.1130/


Comments:
--------------
Test OK on IVB platform.
teracom_vlc4.bin 
Y SSIM extreme 0.999004 
U SSIM average 0.999556 
U SSIM extreme 0.999991 
Y SSIM average 0.999992 
V SSIM extreme 0.999995 
V SSIM average 0.999995 
Frame NO. 65 
Dumped Frame NO. 64 
Lost Frame 1
Comment 1 Du Yan 2012-12-12 07:24:10 UTC 
att_mismatch_att.bits Y sample poor decoding 

Y SSIM extreme 0.970826
Y SSIM average0.994381
U SSIM extreme 1.000000
U SSIM average 1.000000
V SSIM extreme 1.000000
V SSIM average 1.000000

Platform:SGB IVB
Libva: staging
commit 8865fd148a4444b26c35197b3176f87fb2e85393
Intel-driver: staging
commit c0ef9d99df37ae45589fecb898727be495e50304
Comment 2 haihao 2012-12-27 08:31:36 UTC 
>> Platform: SGB
>> Platform:SGB IVB

Did you test it on HSW ?
Comment 3 Du Yan 2012-12-27 08:38:42 UTC 
yes, test on hsw.

teracom_vlc4.bin	
	
Y SSIM extreme 0.998968	
U SSIM average 0.999547	
V SSIM extreme 0.999989	
Y SSIM average 0.999992	
U SSIM extreme 0.999995	
V SSIM average 0.999995

Libva: (staging) b8d3cf092c9b07cfd909552a3c160b7db3b5a91d
Intel-driver: (staging) a6dfb8f7fb601f102b414ac0c9088b5b8e88060f
Mplayer: (hwaccel-vaapi) f1ad459a263f8537f6cba3bf479daea61c6104b9
Comment 4 haihao 2013-01-09 08:53:56 UTC 
The video size is 720x576 however the display size is 768x576, which size are you using in your testing ?
Comment 5 Ouping Zhang 2013-02-04 06:44:44 UTC 
we use video size 720x576 in our testing. 
(In reply to comment #4)
> The video size is 720x576 however the display size is 768x576, which size
> are you using in your testing ?
Comment 6 Ouping Zhang 2013-02-04 07:37:43 UTC 
For teracom_vlc4.bin, the 65 frame ssim:
Y_SSIM = 0.998939
U_SSIM = 0.999989
V_SSIM = 0.999995
Comment 7 Ouping Zhang 2013-03-11 03:01:31 UTC 
MPEG2 pass criterion: ssim > 0.99

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