Bug 60099 - [SNB IVB HSW] SSIM value is low with some AVC stream
Summary: [SNB IVB HSW] SSIM value is low with some AVC stream
Status: VERIFIED NOTOURBUG
Alias: None
Product: libva
Classification: Unclassified
Component: intel (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: haihao
QA Contact: Sean V Kelley
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-01-31 02:45 UTC by Du Yan
Modified: 2013-02-18 09:05 UTC (History)
3 users (show)

See Also:
i915 platform:
i915 features:

Attachments

Description Du Yan 2013-01-31 02:45:11 UTC 
Test Environment
--------------------------------
Platform: HSW IVB
Libva: (staging)21649988d6b532cc96f633db017d1e4369f640e9
intel_driver: (staging)b7cb38772e6f73d3c1b3465e0bc6c0009c2f5634

Bug Info
----------------------------
Some AVC stream failed by low SSIM value.
e.g.

freh6.264 0.911519 0.999106 0.984277 0.999841 0.993667 0.999936  CAFI1_SVA_C.264 0.904099 0.997003 0.971611 0.999113 0.972312 0.999135 


Below case are all failed by low SSIM value:
BA3_SVA_C.264
CAFI1_SVA_C.264
HPCV_BRCM_A.264
Freh1_B.264
freh5.264
FREXT02_JVC_C.264
HCAMFF1_HHI.264
freh9.264
HCAFR3_HHI.264
FREXT01_JVC_D.264
HPCVFLNL_BRCM_A.264
freh6.264
CANL4_SVA_B.264
HPCAFLNL_BRCM_C.264
freh4.264
Freh12_B.264
CABA3_SVA_B.264
HPCAQ2LQ_BRCM_B.264
Freh2_B.264
HCAFR2_HHI.264
freh11.264
HCAFR1_HHI.264
HCAFF1_HHI.264
HPCAMAPALQ_BRCM_B.264
freh8.264
HCAFR4_HHI.264
CVFI2_SVA_C.264
HPCA_BRCM_C.264
HPCVFL_BRCM_A.264
HPCADQ_BRCM_B.264
Freh7_B.264
NL3_SVA_E.264
HPCANL_BRCM_C.264
HPCAFL_BRCM_C.264
HPCVNL_BRCM_A.264
freh3.264
src19td.IBP.264
freh10.264
HPCALQ_BRCM_B.264
MR9_BT_B.h264
cama3_vtc_b.avc
cama2_vtc_b.avc
cama1_vtc_c.avc
FRExt4_Panasonic.avc
Sharp_MP_PAFF_2.jvt
Comment 1 Du Yan 2013-01-31 03:01:55 UTC 
for freh6.264 and CAFI1_SVA_C.264,
we all found that the last frame caused low Y/U/V Y_MIN_SSIM value. 

e.g. freh6.264
289 Y_SSIM = 1.000000
290 U_SSIM = 1.000000
291 V_SSIM = 1.000000
292 Y_SSIM = 1.000000
293 U_SSIM = 1.000000
294 V_SSIM = 1.000000
295 Y_SSIM = 0.911519
296 U_SSIM = 0.984277
297 V_SSIM = 0.993667
Comment 2 Ouping Zhang 2013-02-04 08:10:08 UTC 
For freh6.264, the 99 frame ssim is :
Y_SSIM = 0.911519
U_SSIM = 0.984277
V_SSIM = 0.993667
 
(In reply to comment #1)
> for freh6.264 and CAFI1_SVA_C.264,
we all found that the last frame caused
> low Y/U/V Y_MIN_SSIM value. 

e.g. freh6.264
289 Y_SSIM = 1.000000
290
> U_SSIM = 1.000000
291 V_SSIM = 1.000000
292 Y_SSIM = 1.000000
293 U_SSIM =
> 1.000000
294 V_SSIM = 1.000000
295 Y_SSIM = 0.911519
296 U_SSIM = 0.984277
> 297 V_SSIM = 0.993667
Comment 3 Du Yan 2013-02-18 09:05:24 UTC 
it seems that the SSIM value low is csused by lost frame. but we donot know which frame is lost, it is mplayer bug.

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