[MPlayer-users] Reproducable mencoder segmentation fault

Thu May 16 04:28:01 CEST 2002

Hi,

I have a reproducable mencoder segmentation fault for mencoding a mjpeg 
file produced by a matrox marvel card. The input codec is m3jpeg and the 
problem occurs with both ffmpeg & divx4 encoding.
System informatio is below.

Here is the output of mencoder.
[root at tv2 mjpeg]# /usr/local/bin/mencoder  -lavcopts vcodec=mpeg4 
smallex.avi

MEncoder 0.90pre4-3.0.1 (C) 2000-2002 Arpad Gereoffy (see DOCS!)

CPU vendor name: GenuineIntel  max cpuid level: 2
CPU: Intel Celeron 2/Pentium III Coppermine,Geyserville (Type: 6, 
Stepping: 10)
Testing OS support for SSE... yes.
Testing OS support for SSE unmasked exceptions... yes.
Tests of OS support for SSE passed.
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 0
Reading /root/.mplayer/codecs.conf: 30 audio & 80 video codecs
Font /root/.mplayer/font/font.desc loaded successfully! (206 chars)
File not found: 'frameno.avi'
success: format: 0  data: 0x0 - 0x6936FE
Detected AVI file format!
MainAVIHeader.dwFlags: (65552) HAS_INDEX WAS_CAPTUREFILE
VIDEO:  [MJPG]  352x240  24bpp  29.97 fps  10651.3 kbps (1300.2 kbyte/s)
[V] filefmt:3  fourcc:0x47504A4D  size:352x240  fps:29.97  ftime:=0.0334
Detected audio codec: [pcm] drv:2 (Uncompressed PCM)
Selecting Audio Decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: srate=44100  chans=2  bps=2  sfmt=0x10  ratio: 176400->176400
libavcodec: CPU flags: mmx mmxext sse
Expand: -1 x -1, -1 ; -1  (-1=autodetect) osd: 1
==========================================================================
Opening Video Decoder: [vfw] Win32/VfW video codecs
VDec: vo config request - 352 x 240, Packed YUY2 
[PP] Using codec's postprocessing, max q = 9
Couldn't find matching colorspace - retrying with -vop scale...
SwScale: -1 x -1 (-1=no scaling)
Movie-Aspect is undefined - no prescaling applied.
SwScale scaling 352x240 Packed YUY2 to 352x240 Planar YV12 

SwScaler: BICUBIC scaler, from Packed YUY2 to Planar YV12 using MMX2
REQ: flags=0x401  req=0x0 
REQ: flags=0x401  req=0x0 
videocodec: libavcodec (352x240 fourcc=58564944 [DIVX])
Loading DLL: 'm3jpeg32.dll'
Loaded m3jpeg32.dll to address 0x10000000
ICDecompressGetFormatSize ret: 40
Called unk_MessageBeep
Called unk_GetActiveWindow
Called unk_DialogBoxParamA
ICDecompressBegin failed: Error -2
Detected video codec: [m3jpeg] drv:2 prio:0 (Morgan Motion JPEG Codec)
==========================================================================
MP3 audio selected
Writing AVI header...
*** [scale] Allocating mp_image_t, 352x240x16bpp YUV packed, 168960 bytes
*** [lavc] Allocating mp_image_t, 352x240x12bpp YUV planar, 126720 bytes
*** [expand] Direct Rendering mp_image_t, 352x240x12bpp YUV planar, 
126720 bytes
*** [scale] Allocating mp_image_t, 352x240x16bpp YUV packed, 168960 bytes
Segmentation faultf (31%)   0fps Trem:   0min   0mb  A-V:0.067 [977:208]

This bug occurs with both mplayer 0.90-pre3 and 0.90-pre4 but not with 
the 0.60 series.

The actual frame in which this occurs varies if I use ffmpeg or divx4.

Mplayer plays the file just fine.

A representative mjpeg file is on 
ftp://ssm0.aae.uiuc.edu:/pub/mjpeg/smallex.avi

Any ideas?

Thanks,
-Jay

[root at tv2 tools]# cat /etc/issue.net
Welcome to %h
Mandrake Linux release 8.1 (Vitamin) for i586
Kernel 2.4.8-26mdksmp on an i686
[root at tv2 tools]# uname -a
Linux tv2 2.4.8-26mdksmp #1 SMP Sun Sep 23 16:04:21 CEST 2001 i686 unknown
[root at tv2 tools]# ls -l /lib/libc[.-]*
-rwxr-xr-x    1 root     root      1285480 Sep  9  2001 /lib/libc-2.2.4.so*
lrwxrwxrwx    1 root     root           13 Dec 19 07:12 /lib/libc.so.6 
-> libc-2.2.4.so*
[root at tv2 tools]# X -version

XFree86 Version 4.1.0 / X Window System
(protocol Version 11, revision 0, vendor release 6510)
Release Date: 2 June 2001
    If the server is older than 6-12 months, or if your card is
    newer than the above date, look for a newer version before
    reporting problems.  (See http://www.XFree86.Org/FAQ)
Build Operating System: Linux 2.4.8-5mdkenterprise i686 [ELF]
Module Loader present
[root at tv2 tools]# gcc -v
Reading specs from /usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.0.1/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man 
--infodir=/usr/share/info --enable-shared --enable-threads=posix 
--disable-checking --enable-long-long --enable-cstdio=stdio 
--enable-clocale=generic --enable-languages=c,c++,f77,objc,java 
--program-suffix=-3.0.1 --enable-objc-gc --host=i586-mandrake-linux-gnu
Thread model: posix
gcc version 3.0.1
[root at tv2 tools]# ld -v
GNU ld version 2.11.90.0.8 (with BFD 2.11.90.0.8)
[root at tv2 tools]# as --version
GNU assembler 2.11.90.0.8
Copyright 2001 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License.  This program has absolutely no warranty.
This assembler was configured for a target of `i586-mandrake-linux-gnu'.

-- 
"The condition upon which God hath given liberty to man is eternal vigilance"
- John Philpot Curran, 1808 - 

Freedom is not free.  Free men are not equal.  Equal men are not free.
This message Copyright (c) 2002 Jay Thomas
Jay Thomas, jthomas2 at uiuc.edu http://www.uiuc.edu/~jthomas2