I've just ran into an mencoder crash that occurs when I run:
$ mencoder v4mv-subcmp-crash.vob -nosound -vf crop=712:354:4:62 -ovc \
lavc -lavcopts v4mv:subcmp=2 -ofps 23.976

Removing either crop=, v4mv, or subcmp=2 will make the crash go away.

I have uploaded the files to ftp.mplayerhq.hu
v4mv-subcmp-crash.vob  ---  source video
v4mv-subcmp-crash.log  ---  mencoder -v output
v4mv-subcmp-crash.txt  ---  the text of this email


Since this is reporting a crash, I tried to get gdb output.
For some reason, though, it wouldn't work. I'm not familiar with gdb, so
here's the entire text of what it outputs. If someone can tell me what's
wrong here, I'll fix it and send the right information.

----BEGIN GDB----
bugfood@bugfood:/oliphaunt/lavctest/dumpstream$ gdb /usr/local/src/mplayer/main/mencoder
GNU gdb 5.3-debian
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-linux"...
(gdb) run -v v4mv-subcmp-crash.vob -nosound -vf crop=712:354:4:62 -ovc lavc -lavcopts v4mv:subcmp=2 -ofps 23.976
Starting program: /usr/local/src/mplayer/main/mencoder -v v4mv-subcmp-crash.vob -nosound -vf crop=712:354:4:62 -ovc lavc -lavcopts v4mv:subcmp=2 -ofps 23.976
Error while reading shared library symbols:
Cannot find new threads: capability not available
Cannot find user-level thread for LWP 4943: capability not available
----END GDB----


Anyway, here's the rest of the usual stuff.

Debian Testing/Sarge
Linux bugfood 2.6.1-mm1 #1 Fri Jan 9 20:19:11 PST 2004 i686 GNU/Linux
libc6 version 2.3.2.ds1-10
gcc version 3.3.2 (Debian)
GNU ld version 2.14.90.0.7 20031029 Debian GNU/Linux
GNU assembler 2.14.90.0.7 20031029 Debian GNU/Linux

bugfood@bugfood:/tmp$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 8
model name      : AMD Athlon(tm) 
stepping        : 0
cpu MHz         : 1890.585
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
bogomips        : 3727.36


Thanks,
Corey