Bug 51931

Summary: [IVB] Corruption at the bottom of Video after encoding with low qp
Product: libva Reporter: cc <chao.a.chen>
Component: intelAssignee: haihao <haihao.xiang>
Status: RESOLVED NOTABUG QA Contact:
Severity: major    
Priority: medium    
Version: unspecified   
Hardware: All   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description cc 2012-07-10 02:08:16 UTC 
Environment:
------------
Guest OS Type : Fedora 16 (64bit)
Hardware: IVB

libva:(staging branch)
commit e695f9ff1d5479dc1a50ca5f2238ff87acb94314
Author: Haitao Huang <haitao.huang@intel.com>
Date:   Fri Jul 6 14:02:05 2012 +0200

intel-driver:(staging branch)
commit 560ab2c9b116ddaddd90c24f520c4dc66310c9e7
Author: Xiang, Haihao <haihao.xiang@intel.com>
Date:   Fri Jun 29 14:33:44 2012 +0800


Bug detailed description:
--------------------------
There is a strip at the bottom of the video and we also get some error info as follows:

V:   0.5 499/499 354%  1%  0.0% 0 0 
[h264 @ 0x8913340]error while decoding MB 58 55, bytestream (-33)
[h264 @ 0x8913340]concealing 1551 DC, 1551 AC, 1551 MV errors



Reproduce steps:
----------------
1.startx
2.avcenc 1920 1080 1080p_blue_sky.yuv /tmp/1.264 qp=4 mode=2
3.mplayer -vo xv /tmp/1.264 -fps 30
Comment 1 haihao 2012-07-10 03:32:00 UTC 
The output of avcenc is a .h264 file, not a .264 file,  and MPlayer recognizes the video file by the file extension name.

Please run the following command instead

$> avcenc 1920 1080 1080p_blue_sky.yuv /tmp/1.h264 qp=4 mode=2
Comment 2 haihao 2012-07-10 07:59:29 UTC 
.264: H264 ES
.h264: raw H.264 video format

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