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• FFMPEG Error VC1 to X264 (maybe decoding VC1)

  29 janvier 2013, par Xatian

  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.

  I tracked the error to this source-file :

  http://cekirdek.pardus.org.tr/ ismail/ffmpeg-docs/vc1_8c-source.html

  but I don't know how to set the profile to a value != simple.

  FFMPEG Output :

  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
  
  ======
  
  ---> 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

  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 ...

  ffmpeg -i test.vc1 test.mkv

• Videoediting SDK C#

  10 avril 2013, par user2265112

  I'm currently working on a project were i have to collect a videostream from a videoserver. This is done by the videoservers SDK where i get a videoclip output.
  From this point i want to be able to cut at specific places in the videoclip or more specifically : trim out a specific part in the video.
  This will be done for three videoclips and then i want to combine these videos into one wide-screen split-screen videoclip. You should be able to see clip1,clip2,clip3 simultaneously in one frame.

  As of now i have a solution for this where i pass arguments to ffmpeg. This works but are relatively slow and i don't get errormessages if something goes wrong. Well, i use a streamreader to get some info.

  My question is : Is there a good well-documented library for C# i could use instead ? That ofcourse can provide the same functionality.
  I have looked at directshow but that didn't help me to much. And avisynth has the problem that it doesn't generate its own videoclip, if im not mistaken ?

  Kind Regards.

• Revision 40358dc406 : Removing duplicated code for merging two probabilities. Adding common merge_pro

  25 juillet 2013, par Dmitry Kovalev

  Changed Paths :
   Modify /vp9/common/vp9_entropy.c

  
   Modify /vp9/common/vp9_entropymode.c

  
   Modify /vp9/common/vp9_entropymv.c

  
   Modify /vp9/common/vp9_treecoder.h

  
  
  Removing duplicated code for merging two probabilities.

  Adding common merge_probs and merge_probs2 functions. Changing ints to
  usigned ints in some places.

  Change-Id : Icf088ffdea7cf5b95284a128916409bdd53506b0