title: FFMPEG Error VC1 to X264 (maybe decoding VC1)
body: <p>I am encountering the following error when transcoding using FFMPEG.
  It seams to me that it's an error decoding the VC1 format and has actually nothing to do with the target format (x264) I want to transcode.</p>
  <p>I tracked the error to this source-file:</p>
  <p><a href="http://cekirdek.pardus.org.tr/%7Eismail/ffmpeg-docs/vc1_8c-source.html" rel="nofollow noreferrer">http://cekirdek.pardus.org.tr/~ismail/ffmpeg-docs/vc1_8c-source.html</a></p>
  <p>but I don't know how to set the profile to a value != simple.</p>
  <h3>FFMPEG Output:</h3>
  <pre><code>ffmpeg version 1.1 Copyright (c) 2000-2013 the FFmpeg developers
    built on Jan 16 2013 22:52:43 with gcc 4.6.3 (Gentoo 4.6.3 p1.10, pie-0.5.2)
    configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-O2 -march=native -pipe' --extra-cflags='-O2 -march=native -pipe' --extra-cxxflags='-O2 -march=native -pipe' --disable-static --enable-gpl --enable-postproc --enable-avfilter --disable-stripping --disable-debug --disable-doc --disable-network --disable-vaapi --disable-vdpau --disable-ffplay --disable-runtime-cpudetect --enable-libx264 --disable-indev=v4l2 --disable-indev=alsa --disable-indev=oss --disable-indev=jack --disable-outdev=alsa --disable-outdev=oss --disable-outdev=sdl --enable-libfreetype --disable-amd3dnow --disable-amd3dnowext --disable-altivec --disable-avx --disable-mmxext --disable-vis --disable-neon --cpu=host --enable-hardcoded-tables
    libavutil      52. 13.100 / 52. 13.100
    libavcodec     54. 86.100 / 54. 86.100
    libavformat    54. 59.106 / 54. 59.106
    libavdevice    54.  3.102 / 54.  3.102
    libavfilter     3. 32.100 /  3. 32.100
    libswscale      2.  1.103 /  2.  1.103
    libswresample   0. 17.102 /  0. 17.102
    libpostproc    52.  2.100 / 52.  2.100
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] Old interlaced mode is not supported
  [NULL @ 0x1f99a90] Old WMV3 version detected, some frames may be decoded incorrectly
  [NULL @ 0x1f99a90] Old interlaced mode is not supported
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  Last message repeated 1 times
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  Last message repeated 1 times
  ======
  ---&gt; This goes on forever ... skipped
  ======
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] Chroma scaling is not supported, expect wrong picture
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [NULL @ 0x1f99a90] FASTUVMC unavailable in Simple Profile
  [NULL @ 0x1f99a90] LOOPFILTER shall not be enabled in Simple Profile
  [vc1 @ 0x1f93760] max_analyze_duration 5000000 reached at 5000000
  [vc1 @ 0x1f93760] Could not find codec parameters for stream 0 (Video: vc1): unspecified size
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  [vc1 @ 0x1f93760] Estimating duration from bitrate, this may be inaccurate
  test.vc1: could not find codec parameters
  </code></pre>
  <p>Here is the CMD-line i use ... xD
  Basically I stripped EVERYTHING (codec-related and quality-related) because the error happens no matter what I pass ...</p>
  <pre><code>ffmpeg -i test.vc1 test.mkv
  </code></pre>