[x264-devel] x264 error reporting

B. G. Kim bgkim at etri.re.kr
Mon Jan 17 11:15:21 CET 2005


Dear, L. Aimar.

nice to meet you. I'm an researcher who is interested in video coding.......

So, I usually have used x264 encoder for H.264/AVC contents in Linux (Red Hat 9.0, Intel 3.4 GHz CPU). 

At recent, I found a misoperation of the x264 during encoding the video as follows, and much slower than

the previous verion (x264). I have updated it on 17, January 2005.

====== printed message ==============
~]# ./x264 -B 1024 -o ../x264Videos/starwars_vga_1Mbps_20050113.264 ../yuv/starwars_vga_250frame.yuv  640x480

x264 [warning]: rc buffer size 0 too small
x264 [info]: using cpu capabilities MMX MMXEXT SSE SSE2 
x264 [warning]: buffer underflow -28264
x264 [info]: slice I:1    Avg QP:31.00 Avg size:  8674 PSNR Mean Y:35.42 U:40.86 V:40.53 Avg:36.58 Global:36.58 MSE*Size:1.905
x264 [info]: slice P:29   Avg QP:32.38 Avg size:  4192 PSNR Mean Y:35.41 U:41.25 V:40.91 Avg:36.60 Global:36.34 MSE*Size:0.973
x264 [info]: slice I   Avg I4x4:37.4%  I16x16:62.6%
x264 [info]: slice P   Avg I4x4:3.6%  I16x16:4.6%  P:34.4%  P8x8:2.5%  PSKIP:55.0%
x264 [info]: PSNR Mean Y:35.41 U:41.24 V:40.89 Avg:36.60 Global:36.35 kb/s:868.3

encoded 30 frames, 14.23 fps, 869.37 kb/s

~]#
===============================

To the third row, there are some errenous operation in my opinion.

As a result on another Linux PC, I've got the same message.

I hope this report is helpful of the advanced development of x264. And 

reply to me if you have any solution for this problem.

Thank you for your contribution for x264 project!


With best regards,

*******************************************************************
Byung-Gyu Kim,
 
Ph. D. / Senior Researcher
Real-time Multimedia Research Team,
Embedded Software Technology Center, 
Electronics and Telecommunications Research Institute (ETRI) 

161 Gajeong-dong Yuseong-gu Daejeon 305-350 KOREA 
Tel: +82 -42-860-5766, Portable: 011-1759-3452. 
E-mail: bgkim at etri.re.kr, bg.kim at ieee.org, hopeof at kaist.ac.kr,  
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