Hello. I'm trying to encode the 2001: A Space Odyssey DVD to mpeg4 using lavc on to 2 CDs, preserving original audio stream. Unfortunately, mencoder seems to be unable to complete the second pass, the assertion libavcodec/ratecontrol.c:587: [...] if(s->flags&CODEC_FLAG_PASS2){ assert(picture_number>=0); assert(picture_number<rcc->num_entries); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rce= &rcc->entry[picture_number]; wanted_bits= rce->expected_bits; }else{ rce= &local_rce; wanted_bits= (uint64_t)(s->bit_rate*(double)picture_number/fps); } [...] always fails on the last frame. Even stranger, this happens only if I encode chapters 1-16 or 1-17. If I encode only chapter 16 or 17, all is fine. I've tried MEncoder-CVS 2003/11/30 and 2003/12/02 (with the same libavcodec versions), both exhibit the same behaviour $ mplayer -identify -frames 0 dvd://1 MPlayer dev-RPM-CVS-031202-20:02-3.2.2 (C) 2000-2003 MPlayer Team CPU: Advanced Micro Devices Athlon Thunderbird 1173 MHz (Family: 6, Stepping: 2) Detected cache-line size is 64 bytes CPUflags: MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0 Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx Reading config file /etc/mplayer/mplayer.conf Reading config file /home/dominik/.mplayer/config Reading /home/dominik/.mplayer/codecs.conf: 60 audio & 151 video codecs font: can't open file: /home/dominik/.mplayer/font/font.desc font: can't open file: /usr/share/mplayer/font/font.desc Using Linux hardware RTC timing (1024Hz). Can't open input config file /home/dominik/.mplayer/input.conf: Nie ma takiego pliku ani katalogu Input config file /etc/mplayer/input.conf parsed: 53 binds Playing dvd://1. libdvdread: Couldn't find device name. Reading disc structure, please wait... There are 3 titles on this DVD. There are 32 chapters in this DVD title. There are 1 angles in this DVD title. DVD successfully opened. Selected DVD audio channel: 128 language: en Cache fill: 19,24% (1613824 bytes) MPEG-PS file format detected. VIDEO: MPEG2 720x576 (aspect 3) 25,000 fps 7500,0 kbps (937,5 kbyte/s) ========================================================================== Opening audio decoder: [liba52] AC3 decoding with liba52 Using 3DNowEx optimized IMDCT transform AC3: 5.1 (3f+2r+lfe) 48000 Hz 384,0 kbit/s Using MMX optimized resampler AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 48000->192000 (384,0 kbit) Selected audio codec: [a52] afm:liba52 (AC3-liba52) ========================================================================== ID_FILENAME=dvd://1 ID_VIDEO_FORMAT=0x10000002 ID_VIDEO_BITRATE=7500000 ID_VIDEO_WIDTH=720 ID_VIDEO_HEIGHT=576 ID_VIDEO_FPS=25,000 ID_VIDEO_ASPECT=1,7778 ID_AUDIO_CODEC=a52 ID_AUDIO_FORMAT=8192 ID_AUDIO_BITRATE=384000 ID_AUDIO_RATE=48000 ID_AUDIO_NCH=2 ID_LENGTH=7217 vo: X11 running at 1024x768 with depth 24 and 32 bpp (":0" => local display) Disabling DPMS ========================================================================== Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.3.1 Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG 1 or 2 (libmpeg2)) ========================================================================== Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/16bit... AF_pre: af format: 2 bps, 2 ch, 48000 hz, little endian signed int AF_pre: 48000Hz 2ch Signed 16-bit (Little-Endian) AO: [oss] 44100Hz 2ch Signed 16-bit (Little-Endian) (2 bps) Building audio filter chain for 48000Hz/2ch/16bit -> 44100Hz/2ch/16bit... Starting playback... Exiting... (End of file) This: nice mencoder dvd://1 -chapter 1-16 -noaspect -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1032000:vqmin=2:vqmax=12:vqcomp=0.7:keyint=120:psnr:naq:v4mv:vlelim=-2:vcelim=7:lumi_mask=0.05:dark_mask=0.01:trell:mbd=2:mv0:cbp:qpel:precmp=2:cmp=2:subcmp=2:mbcmp=2:vmax_b_frames=1:vqdiff=5:vqblur=0.3:vpass=1 -sws 10 -vf crop=716:472:2:52,scale=640:352 -oac copy -o 2001.part1.avi completes fine, but this doesn't: nice mencoder dvd://1 -chapter 1-16 -noaspect -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1032000:vqmin=2:vqmax=12:vqcomp=0.7:keyint=120:psnr:naq:v4mv:vlelim=-2:vcelim=7:lumi_mask=0.05:dark_mask=0.01:trell:mbd=2:mv0:cbp:qpel:precmp=2:cmp=2:subcmp=2:mbcmp=2:vmax_b_frames=1:vpass=2 -sws 10 -vf crop=716:472:2:52,scale=640:352 -oac copy -o 2001.part1.avi MEncoder dev-RPM-CVS-031202-20:02-3.2.2 (C) 2000-2003 MPlayer Team CPU: Advanced Micro Devices Athlon Thunderbird 1000 MHz (Family: 6, Stepping: 2) Detected cache-line size is 64 bytes CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0 Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx Reading /home/dominik/.mplayer/codecs.conf: 60 audio & 151 video codecs File not found: 'frameno.avi' Failed to open frameno.avi Reading config file /home/dominik/.mplayer/mencoder libdvdread: Couldn't find device name. Reading disc structure, please wait... There are 3 titles on this DVD. There are 32 chapters in this DVD title. There are 1 angles in this DVD title. DVD successfully opened. success: format: 0 data: 0x720000 - 0xC6EB8800 Selected DVD audio channel: 128 language: en MPEG-PS file format detected. VIDEO: MPEG2 720x576 (aspect 3) 25,000 fps 7500,0 kbps (937,5 kbyte/s) [V] filefmt:2 fourcc:0x10000002 size:720x576 fps:25,00 ftime:=0,0400 ========================================================================== Opening audio decoder: [liba52] AC3 decoding with liba52 Using 3DNowEx optimized IMDCT transform AC3: 5.1 (3f+2r+lfe) 48000 Hz 384,0 kbit/s Using MMX optimized resampler AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 48000->192000 (384,0 kbit) Selected audio codec: [a52] afm:liba52 (AC3-liba52) ========================================================================== Opening video filter: [expand osd=1] Expand: -1 x -1, -1 ; -1 (-1=autodetect) osd: 1 Opening video filter: [scale w=640 h=352] Opening video filter: [crop w=716 h=472 x=2 y=52] Crop: 716 x 472, 2 ; 52 ========================================================================== Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.3.1 Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG 1 or 2 (libmpeg2)) ========================================================================== audiocodec: framecopy (format=2000 chans=2 rate=48000 bits=16 bps=48000 sample=1) Writing AVI header... VDec: vo config request - 720 x 576 (preferred csp: Planar YV12) VDec: using Planar YV12 as output csp (no 0) Movie-Aspect is undefined - no prescaling applied. SwScaler: reducing / aligning filtersize 24 -> 12 SwScaler: reducing / aligning filtersize 24 -> 12 SwScaler: reducing / aligning filtersize 28 -> 13 SwScaler: reducing / aligning filtersize 28 -> 13 SwScaler: Bicubic spline scaler, from Planar YV12 to Planar YV12 using MMX2 videocodec: libavcodec (640x352 fourcc=58564944 [DIVX]) High quality encoding selected (non real time)! Pos: 0,8s 22f ( 0%) 1fps Trem: 0min 0mb A-V:0,084 [0:384] Skipping frame! Pos: 1,7s 44f ( 0%) 2fps Trem: 0min 0mb A-V:0,080 [23:384] Skipping frame! mencoder: ratecontrol.c:587: ff_rate_estimate_qscale: `picture_number<rcc->num_entries' assertion failed. /home/dominik/bin/dvd2divx: line 37: 28260 Interrupted (core dumped) $NICE mencoder $OPTS -ovc lavc -lavcopts $LAVCOPTS:vpass=2 $VOPTS -oac copy -o "$OUT" Sorry for not giving -v output, but I'd have to wait about 12 hours to get it, because I'm encoding over a slow 10Mbit SMB mount. :( Any clues? Additional information: RedHat 7.3 $ uname -a Linux rathann.pekin.net.pl 2.4.23-lm2-lv #8 wto gru 2 04:57:28 CET 2003 i686 unknown $ ls -l /lib/libc[.-]* -rwxr-xr-x 1 root root 1260480 lis 5 18:07 /lib/libc-2.2.5.so lrwxrwxrwx 1 root root 13 lis 16 12:06 /lib/libc.so.6 -> libc-2.2.5.so $ gcc32 -v Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2.2/specs Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --host=i386-redhat-linux Thread model: posix gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) $ ld -v GNU ld version 2.13.90.0.2 20020802 $ as --version GNU assembler 2.13.90.0.2 20020802 $ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 4 model name : AMD Athlon(tm) processor stepping : 2 cpu MHz : 1000.073 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 sep mtrr pge mca cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow bogomips : 1992.29 $ lspci [...] 01:00.0 VGA compatible controller: nVidia Corporation NV10 [GeForce 256 SDR] (rev 10) $ cat /proc/driver/nvidia/version NVRM version: NVIDIA Linux x86 nvidia.o Kernel Module 1.0-4496 Wed Jul 16 19:03:09 PDT 2003 $ cat /proc/isapnp Card 1 'CTL0044:Creative SB32 PnP' PnP version 1.0 Product version 1.0 $ grep SB /var/log/dmesg sb: Creative SB32 PnP detected sb: ISAPnP reports 'Creative SB32 PnP' at i/o 0x220, irq 5, dma 1, 5 -- MPlayer RPMs maintainer: http://www.piorunek.pl/~dominik/linux/pkgs/mplayer/ "The Universe doesn't give you any points for doing things that are easy." -- Sheridan to Garibaldi in Babylon 5:"The Geometry of Shadows"