failed decoding h264 if -threads specifid

[verem]

todays latest git-N-29906-ge3114a9 ffmpeg build failed to decode h264 stream if -thread parameter specified:

with threads parameter specified:

[root@dev-4 ffmpeg.git]# ./ffmpeg -threads 2 -i nature_704x576_25Hz_1500kbits.h264 -f rawvideo -y /dev/null
ffmpeg version git-N-29906-ge3114a9, Copyright (c) 2000-2011 the FFmpeg developers
  built on May 13 2011 10:54:40 with gcc 4.5.1 20100924 (Red Hat 4.5.1-4)
  configuration: --prefix=/usr/local/enctools --extra-cflags=-I/usr/local/enctools/include --extra-ldflags=-L/usr/local/enctools/lib --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-avfilter --enable-pthreads --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
  libavutil    51.  2. 1 / 51.  2. 1
  libavcodec   53.  5. 0 / 53.  5. 0
  libavformat  53.  0. 3 / 53.  0. 3
  libavdevice  53.  0. 0 / 53.  0. 0
  libavfilter   2.  5. 0 /  2.  5. 0
  libswscale    0. 14. 0 /  0. 14. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[h264 @ 0x91b8b20] max_analyze_duration reached
[h264 @ 0x91b8b20] Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 25.00 (50/2)
Input #0, h264, from 'nature_704x576_25Hz_1500kbits.h264':
  Duration: N/A, bitrate: N/A
    Stream #0.0: Video: h264 (Main), yuv420p, 704x576, 25 fps, 25 tbr, 1200k tbn, 50 tbc
[buffer @ 0x9303240] w:704 h:576 pixfmt:yuv420p tb:1/1000000 sar:0/1
Output #0, rawvideo, to '/dev/null':
  Metadata:
    encoder         : Lavf53.0.3
    Stream #0.0: Video: rawvideo, yuv420p, 704x576, q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop encoding
[buffer @ 0x9303240] Buffer video input changed from size:704x576 fmt:yuv420p to size:0x0 fmt:(null)
[buffer @ 0x9303240] Inserting scaler filter
[ffsink @ 0x9462c00] auto-inserting filter 'Input equalizer' between the filter 'src' and the filter 'out'
[scale @ 0x91ba8e0] w:0 h:0 fmt:(null) -> w:704 h:576 fmt:yuv420p flags:0x2
swScaler: Unknown format is not supported as input pixel format
    Last message repeated 2 times
[IMGUTILS @ 0xbf9a4154] Picture size 0x0 is invalid
Segmentation fault

without threads parameter:

[root@dev-4 ffmpeg.git]# ./ffmpeg -i nature_704x576_25Hz_1500kbits.h264 -f rawvideo -y /dev/null
ffmpeg version git-N-29906-ge3114a9, Copyright (c) 2000-2011 the FFmpeg developers
  built on May 13 2011 10:54:40 with gcc 4.5.1 20100924 (Red Hat 4.5.1-4)
  configuration: --prefix=/usr/local/enctools --extra-cflags=-I/usr/local/enctools/include --extra-ldflags=-L/usr/local/enctools/lib --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-avfilter --enable-pthreads --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
  libavutil    51.  2. 1 / 51.  2. 1
  libavcodec   53.  5. 0 / 53.  5. 0
  libavformat  53.  0. 3 / 53.  0. 3
  libavdevice  53.  0. 0 / 53.  0. 0
  libavfilter   2.  5. 0 /  2.  5. 0
  libswscale    0. 14. 0 /  0. 14. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[h264 @ 0x8e67b20] max_analyze_duration reached
[h264 @ 0x8e67b20] Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 25.00 (50/2)
Input #0, h264, from 'nature_704x576_25Hz_1500kbits.h264':
  Duration: N/A, bitrate: N/A
    Stream #0.0: Video: h264 (Main), yuv420p, 704x576, 25 fps, 25 tbr, 1200k tbn, 50 tbc
[buffer @ 0x8fb2240] w:704 h:576 pixfmt:yuv420p tb:1/1000000 sar:0/1
Output #0, rawvideo, to '/dev/null':
  Metadata:
    encoder         : Lavf53.0.3
    Stream #0.0: Video: rawvideo, yuv420p, 704x576, q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop encoding
frame=  236 fps=217 q=0.0 Lsize=       0kB time=9.44 bitrate=   0.0kbits/s    
video:140184kB audio:0kB global headers:0kB muxing overhead -100.000000%
Received signal 2: terminating.

[Carl Eugen Hoyos]

Looks like a duplicate of ticket #197.