[MPlayer-users] Reproducable segfault with mencoder -pass 2

Wed Nov 14 15:36:34 CET 2001

Hi,

silly question: did you do -pass 1 first before trying -pass 2?
(you must run mencoder twice for 2pass encoding, first with -pass 1 and
second time with -pass 2, btw RTFM)

> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html &
>  http://gcc.gnu.org/gcc-2.96.html if you still have questions or problems]
> 
> Hi all,
> 
> I get a reproducable segfault when I use the -pass 2 flag to mencoder
> with current CVS. This happens on all files I've tried, and removing the
> -pass 2 flag makes it work again. I've uploaded the output file which
> mencoder produced before dying. It's in incoming/mencoder_segfault.avi.
> 
> gdb output
> ----------
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 1024 (LWP 3347)]
> 0x080594ac in VbrControl_get_intra () at divx4_vbr.c:346
> 346             return m_vFrames[m_iCount].is_key_frame;
> (gdb) bt
> #0  0x080594ac in VbrControl_get_intra () at divx4_vbr.c:346
> #1  0x0805b0a3 in main (argc=5, argv=0xbffff994, envp=0xbffff9ac) at
> mencoder.c:720
> #2  0x403ac65f in __libc_start_main () from /lib/libc.so.6
> (gdb) disass $eip-32 $eip+32
> Dump of assembler code from 0x805948c to 0x80594cc:
> 0x805948c <VbrControl_init_2pass_vbr_encoding+1952>:    (bad)  
> 0x805948d <VbrControl_init_2pass_vbr_encoding+1953>:    lcall
> *0x5e(%ebx)
> 0x8059490 <VbrControl_init_2pass_vbr_encoding+1956>:    pop    %edi
> 0x8059491 <VbrControl_init_2pass_vbr_encoding+1957>:    mov    %ebp,%esp
> 0x8059493 <VbrControl_init_2pass_vbr_encoding+1959>:    pop    %ebp
> 0x8059494 <VbrControl_init_2pass_vbr_encoding+1960>:    ret    
> 0x8059495 <VbrControl_init_2pass_vbr_encoding+1961>:    lea
> 0x0(%esi),%esi
> 0x8059498 <VbrControl_get_intra>:       push   %ebp
> 0x8059499 <VbrControl_get_intra+1>:     mov    0x8108204,%eax
> 0x805949e <VbrControl_get_intra+6>:     mov    0x8108244,%edx
> 0x80594a4 <VbrControl_get_intra+12>:    mov    %esp,%ebp
> 0x80594a6 <VbrControl_get_intra+14>:    lea    (%eax,%eax,2),%eax
> 0x80594a9 <VbrControl_get_intra+17>:    mov    %ebp,%esp
> 0x80594ab <VbrControl_get_intra+19>:    pop    %ebp
> 0x80594ac <VbrControl_get_intra+20>:    movswl 0x14(%edx,%eax,8),%eax
> 0x80594b1 <VbrControl_get_intra+25>:    ret    
> 0x80594b2 <VbrControl_get_intra+26>:    mov    %esi,%esi
> 0x80594b4 <VbrControl_get_drop>:        push   %ebp
> 0x80594b5 <VbrControl_get_drop+1>:      mov    %esp,%ebp
> 0x80594b7 <VbrControl_get_drop+3>:      movswl 0x8108210,%eax
> 0x80594be <VbrControl_get_drop+10>:     mov    %ebp,%esp
> 0x80594c0 <VbrControl_get_drop+12>:     pop    %ebp
> 0x80594c1 <VbrControl_get_drop+13>:     ret    
> 0x80594c2 <VbrControl_get_drop+14>:     mov    %esi,%esi
> 0x80594c4 <VbrControl_get_quant>:       push   %ebp
> 0x80594c5 <VbrControl_get_quant+1>:     mov    0x8108208,%eax
> 0x80594ca <VbrControl_get_quant+6>:     mov    %esp,%ebp
> End of assembler dump.
> (gdb) 
> 
> Related software
> ----------------
> lame-3.89beta
> divx4linux-20011025
> 
> Other software info
> -------------------
> Debian GNU/Linux testing/unstable
> Kernel 2.4.15-pre4
> glibc-2.2.4
> XFree86 4.1.0
> gcc-2.95.4 20011006 (Debian prerelease)
> GNU ld version 2.11.92.0.10 20011021 Debian/GNU Linux
> binutils-2.11.92.0.10
> 
> Hardware info
> -------------
> Pentium III 550 Mhz
> NVidia TNT2 32 mb
> Video driver from X
> VIA AC97 Audio Controller
> Via 686a audio driver 1.9.1
> 
> mencoder output
> ---------------
> Reading /home/andre/.mplayer/codecs.conf: 21 audio & 58 video codecs
> File size is 505860 bytes
> success: format: 0  data: 0x0 - 0x7B804
> ASF_check: not ASF guid!
> Checking for MOV
> system stream synced at 0xB (11)!
> ==> Found video stream: 0
> Detected MPEG-PS file format!
> ==> Found audio stream: 0
> Searching for sequence header... LAME version 3.89 (beta 1, Nov 13 2001) (http://www.mp3dev.org/)
> Using polyphase lowpass  filter, transition band: 19383 Hz - 19916 Hz
> 
> misc:
> 
> 	scaling: 0.000000
> 	filter type: 0
> 	quantization: xr^3/4
> 	huffman search: best (outside loop)
> 	experimental X=0 Y=0 Z=0
> 	...
> 
> stream format:
> 
> 	MPEG-1 Layer 3
> 	2 channel - stereo
> 	padding: auto
> 	variable bitrate - VBR rh (default)
> 	...
> 
> psychoacoustic:
> 
> 	tonality estimation limit: 8871.700195 Hz
> 	force channels to have same block types: no
> 	adjust masking: -1.000000 dB
> 	psymodel: 1
> 	noise shaping: 1
> 	 ^ amplification: 1
> 	 ^ stopping: 1
> 	ATH: using
> 	 ^ type: 4
> 	 ^ adjust type: 3
> 	 ^ adapt threshold type: 2
> 	using temporal masking effect: no
> 	...
> 
> OK!
> VIDEO:  MPEG1  176x128  (aspect 1)  24.00 fps  115.0 kbps (14.4 kbyte/s)
> [V] filefmt:2  fourcc:0x10000001  size:176x128  fps:24.00  ftime:=0.0417
> Detected video codec: [mpeg12] drv:1 (MPEG 1 or 2)
> mpeg2dec-0.2.0-release (C) 2000-2001 Aaron Holtzman & Michel Lespinasse
> libmpeg2: Using MMXEXT for IDCT transform
> libmpeg2: Using MMXEXT for motion compensation
> Detected audio codec: [mp3] drv:1 (MPEG layer-2, layer-3)
> Initializing audio codec...
> dec_audio: Allocating 4608 + 65536 = 70144 bytes for output buffer
> mp3lib: Processor ID: 681
> mp3lib: Using SSE! optimized decore.
> AUDIO: srate=44100  chans=2  bps=2  sfmt=0x10  ratio: 4000->176400
> Writing AVI header...
> A:   1.9 V:   1.4 A-V:  0.551 oAV:  0.481 diff:  0.070 ct:  0.000 vpc:  0.000   
> Segmentation fault
> 
> Let me know if further details are needed.
> -- 
> 
> André Dahlqvist <andre.dahlqvist at telia.com>
> _______________________________________________
> RTFM!!!  http://www.MPlayerHQ.hu/DOCS
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> 
> 

A'rpi / Astral & ESP-team

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