ffmpeg -ss 00:10:00 -i We.Were.Soldiers.2002.UK.BluRay.10
80p.DTSHD-MA.h264.Remux-decibeL.mkv -vframes 1 -y -f image2 screen2.png
FFmpeg version SVN-r0.5.6-4:0.5.6-3, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --extra-version=4:0.5.6-3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdc1394 --enable-shared --disable-static
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 1 / 52.20. 1
  libavformat   52.31. 0 / 52.31. 0
  libavdevice   52. 1. 0 / 52. 1. 0
  libavfilter    0. 4. 0 /  0. 4. 0
  libswscale     0. 7. 1 /  0. 7. 1
  libpostproc   51. 2. 0 / 51. 2. 0
  built on Dec 31 2011 16:14:46, gcc: 4.4.5
[matroska @ 0x1cfb480]Unknown/unsupported CodecID S_HDMV/PGS.

Seems stream 0 codec frame rate differs from container frame rate: 47.95 (48000/1001) -> 23.98 (24000/1001)
    Last message repeated 1 times
Input #0, matroska, from 'We.Were.Soldiers.2002.UK.BluRay.1080p.DTSHD-MA.h264.Remux-decibeL.mkv':
  Duration: 02:18:31.58, start: 0.000000, bitrate: N/A
    Stream #0.0: Video: h264, yuv420p, 1920x1080, PAR 1:1 DAR 16:9, 23.98 tbr, 1k tbn, 47.95 tbc
    Stream #0.1(eng): Audio: dca, 48000 Hz, 5.1, s16
    Stream #0.2(eng): Audio: ac3, 48000 Hz, stereo, s16
    Stream #0.3(eng): Subtitle: 0x0000
    Stream #0.4(rus): Subtitle: 0x0000
[swscaler @ 0x20c2410]No accelerated colorspace conversion found.
Output #0, image2, to 'screen2.png':
    Stream #0.0: Video: png, rgb24, 1920x1080 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 23.98 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop encoding
[h264 @ 0x1d05950]Missing reference picture
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