ffmpeg illegal instruction on h264 encode

ffmpeg.crash.log

**********

Host Name:      theodore-waddells-powermacg3series
Date/Time:      2013-04-14 16:26:15.649 -0400
OS Version:     10.4.11 (Build 8S165)
Report Version: 4

Command: ffmpeg
Path:    /usr/local/bin/ffmpeg
Parent:  bash [27115]

Version: ??? (???)

PID:    27148
Thread: 0

Exception:  EXC_BAD_INSTRUCTION (0x0002)
Code[0]:    0x00000002
Code[1]:    0x0046f088


Thread 0 Crashed:
0   libx264.125.dylib     0x0046f088 x264_frame_pop_unused + 8
1   libx264.125.dylib   	0x004fc080 x264_encoder_open_125 + 3680
2   libavcodec.54.dylib 	0x01368e74 ff_lag_rac_init + 14580
3   libavcodec.54.dylib 	0x014cea6c avcodec_open2 + 2780
4   ffmpeg              	0x00016654 term_init + 37644
5   ffmpeg              	0x00017840 main + 420
6   ffmpeg              	0x000026dc start + 812
7   ffmpeg              	0x000023e0 start + 48

Thread 0 crashed with PPC Thread State 64:
  srr0: 0x000000000046f088 srr1: 0x000000000008f030                        vrsave: 0x0000000000000000
    cr: 0x82004222          xer: 0x0000000000000001   lr: 0x00000000004fc080  ctr: 0x0000000090014d1c
    r0: 0x0000000000000000   r1: 0x00000000bfffa900   r2: 0x00000000434f4e44   r3: 0x000000000069e000
    r4: 0x0000000000000001   r5: 0x000000000000002c   r6: 0x0000000000000000   r7: 0x0000000000000001
    r8: 0x00000000004fc080   r9: 0x0000000000000000  r10: 0x00000000000001ff  r11: 0x0000000042002228
   r12: 0x0000000090014d1c  r13: 0x00000000000250c4  r14: 0x00000000000250c4  r15: 0x0000000000000000
   r16: 0x0000000000000000  r17: 0x0000000000000002  r18: 0x0000000000000000  r19: 0x00000000007c3000
   r20: 0x0000000000000032  r21: 0x000000000069e000  r22: 0x0000000000000188  r23: 0x000000000069e000
   r24: 0x0000000000006521  r25: 0x0000000000520000  r26: 0x0000000000000000  r27: 0x000000000069e000
   r28: 0x0000000000000000  r29: 0x000000000069e000  r30: 0x000000000069e000  r31: 0x0000000000000001

Binary Images Description:
    0x1000 -    0x24fff ffmpeg 	/usr/local/bin/ffmpeg
   0x2b000 -    0x2dfff libavdevice.54.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libavdevice.54.dylib
   0x30000 -    0x3dfff libavresample.1.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libavresample.1.dylib
   0x41000 -    0x49fff libpostproc.52.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libpostproc.52.dylib
   0x4c000 -    0x5bfff libswresample.0.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libswresample.0.dylib
   0x6f000 -    0x7bfff libfaac.0.0.0.dylib 	/usr/local/lib/libfaac.0.0.0.dylib
   0xaa000 -    0xdefff libswscale.2.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libswscale.2.dylib
  0x205000 -   0x288fff libavfilter.3.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libavfilter.3.dylib
  0x2af000 -   0x3dffff libavformat.54.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libavformat.54.dylib
  0x408000 -   0x42ffff libavutil.52.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libavutil.52.dylib
  0x43b000 -   0x520fff libx264.125.dylib 	/usr/local/lib/libx264.125.dylib
  0x5c0000 -   0x5f8fff libmp3lame.0.dylib 	/usr/local/lib/libmp3lame.0.dylib
 0x1008000 -  0x1890fff libavcodec.54.dylib 	/usr/local/Cellar/ffmpeg/1.2/lib/libavcodec.54.dylib
0x8fe00000 - 0x8fe52fff dyld 46.16	/usr/lib/dyld
0x90000000 - 0x901bcfff libSystem.B.dylib 	/usr/lib/libSystem.B.dylib
0x90214000 - 0x90219fff libmathCommon.A.dylib 	/usr/lib/system/libmathCommon.A.dylib
0x91112000 - 0x91120fff libz.1.dylib 	/usr/lib/libz.1.dylib
0x91434000 - 0x9143ffff libgcc_s.1.dylib 	/usr/lib/libgcc_s.1.dylib
0x92a07000 - 0x92af5fff libiconv.2.dylib 	/usr/lib/libiconv.2.dylib
0x98de7000 - 0x98df4fff libbz2.1.0.dylib 	/usr/lib/libbz2.1.0.dylib

output

theodore-waddells-powermacg3series:~ theodorewaddell$ ffmpeg -i /Users/theodorewaddell/Desktop/FuryLowIdle.mp4 -vcodec libx264 -vprofile high -preset slow -pix_fmt yuv420p -b:v 300k -b:v 300k -s 426x240 -threads 0  /Users/theodorewaddell/Desktop/FuryLowIdle240p.mp4
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
  built on Apr 14 2013 15:13:48 with gcc 4.2.1 (GCC) (Apple Inc. build 5553)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=/usr/local/bin/gcc-4.2 --host-cflags='-Os -w -pipe -mcpu=750 -isystem /usr/X11R6/include -mmacosx-version-min=10.4' --host-ldflags='-L/usr/local/opt/ld64/lib -L/usr/local/lib -F/usr/local/Frameworks -L/usr/X11R6/lib -B/usr/local/Cellar/ld64/97.17/bin/' --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --disable-asm --disable-altivec
  libavutil      52. 18.100 / 52. 18.100
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.104 / 54. 63.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 42.103 /  3. 42.103
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/theodorewaddell/Desktop/FuryLowIdle.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2013-02-08 18:14:21
  Duration: 00:00:26.54, start: 0.000000, bitrate: 2929 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 2783 kb/s, 29.97 fps, 29.97 tbr, 60k tbn, 59.94 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 144 kb/s
    Metadata:
      creation_time   : 2013-02-08 18:14:21
      handler_name    : IsoMedia File Produced by Google, 5-11-2011
[libx264 @ 0x2007000] using cpu capabilities: none!
Illegal instruction