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• lavfi/mp/mcdeint : avoid uninited data read

  31 mai 2013, par Stefano Sabatini

  lavfi/mp/mcdeint : avoid uninited data read
  Do not read padding or out-of-buffer values when computing the output
  
  value for a pixel close to the image buffer edge.
  This avoids non visible artifacts which affected the output checksum.
  See thread :
  
  Subject : [FFmpeg-devel] [PATCH] lavfi/mp/mcdeint : avoid uninited data read
  
  Date : Thu, 30 May 2013 18:57:14 +0200
  

  • [DH] libavfilter/libmpcodecs/vf_mcdeint.c

• ffmpeg convert images to mp4 error

  31 mai 2013, par Ryan Saxe

  So I have a script that grabs a bunch of images from the web and then converts them into a movie. Yet I get a whole bunch of errors when I run it.

  First let me show what I am running and then I will post the error because it's huge :

  #for gif
  
  #call('convert -set delay 5 -loop 0 ' + folder + '*.jpg ' + name + '.gif', shell=True)
  
  #for mov
  
  #call('convert -quality 100 ' + folder + '*.jpg ' + name + '.mov', shell=True)
  
  #for organized movie
  
  call('ffmpeg -r 10 -b 1800 -i ' + folder + '%0' + str(size) + 'd.jpg ' + name + '.mp4', shell=True)

  So the commented out versions work fine, but I need to use the 3rd version ! Here is the response I get from ffmpeg :

  ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Mar 31 2013 21:55:33 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
  
    configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libfreetype --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
  
    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
  
  Please use -b:a or -b:v, -b is ambiguous
  
  [mjpeg @ 0x7f8cc402a800] [IMGUTILS @ 0x7fff5a680ae0] Picture size 10835x53928 is invalid
  
      Last message repeated 26 times
  
  [mjpeg @ 0x7f8cc402a800] Found EOI before any SOF, ignoring
  
  [mjpeg @ 0x7f8cc402a800] mjpeg: unsupported coding type (cf)
  
  [mjpeg @ 0x7f8cc402a800] mjpeg: unsupported coding type (c8)
  
  [mjpeg @ 0x7f8cc402a800] [IMGUTILS @ 0x7fff5a680ae0] Picture size 54310x53928 is invalid
  
  [mjpeg @ 0x7f8cc402a800] only 8 bits/component accepted
  
      Last message repeated 8 times
  
  [mjpeg @ 0x7f8cc402a800] mjpeg: unsupported coding type (c5)
  
  [mjpeg @ 0x7f8cc402a800] [IMGUTILS @ 0x7fff5a680ae0] Picture size 10835x53928 is invalid
  
      Last message repeated 12 times
  
  [mjpeg @ 0x7f8cc402a800] mjpeg: unsupported coding type (cf)
  
  [mjpeg @ 0x7f8cc402a800] only 8 bits/component accepted
  
  [mjpeg @ 0x7f8cc402a800] mjpeg: unsupported coding type (cf)
  
  [mjpeg @ 0x7f8cc402a800] only 8 bits/component accepted
  
  [mjpeg @ 0x7f8cc402a800] mjpeg: unsupported coding type (cf)
  
  [mjpeg @ 0x7f8cc402a800] only 8 bits/component accepted
  
  [image2 @ 0x7f8cc4029c00] decoding for stream 0 failed
  
  [image2 @ 0x7f8cc4029c00] Could not find codec parameters for stream 0 (Video: mjpeg): unspecified size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  /Users/ryansaxe/Desktop/kaggle_parkinsons/MOVIES/%03d.jpg: could not find codec parameters

  Note :

  [mjpeg @ 0x7f8cc402a800] mjpeg: unsupported coding type (cf)
[mjpeg @ 0x7f8cc402a800] only 8 bits/component accepted

  repeated about 30 times, but i cut it out of the traceback because it was overwhelming.

  Question : What did I do wrong and how do I fix it ?

  Edit :

  I download the jpeg files using the urllib python library's urlretrieve. This is how I save them :

  for src,name in zip(urls,range(len(urls))):
  
      file_name = folder + str(name) + '.jpg'
  
      urlretrieve(src, file_name)

• Error in FFMpeg and png images (glob/libavformat) [closed]

  1er juin 2013, par Alain P. Francés

  I'm trying to use FFMpeg to produce an animation based on several png images
  that don't follow a sequence number. With
  the following command line

  ffmpeg -f image2 -r 1 -pattern_type glob -i '*.png' -c:v libx264 mov.mp4

  I obtain the following error

  ffmpeg version N-53033-g56ba331 Copyright (c) 2000-2013 the FFmpeg developers
  built on May 13 2013 22:18:29 with gcc 4.7.3 (GCC)
  configuration : —enable-gpl —enable-version3 —disable-w32threads
  
  — enable-avisynth —enable-bzlib —enable-fontconfig —enable-frei0r
  
  — enable-gnutls —enable-iconv —enable-libass —enable-libbluray
  
  — enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc 
  
  — enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb 
  
  — enable-libopenjpeg —enable-libopus —enable-librtmp
  
  — enable-libschroedinger —enable-libsoxr —enable-libspeex
  
  — enable-libtheora —enable-libtwolame —enable-libvo-aacenc
  
  — enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libx264 
  
  — enable-libxavs —enable-libxvid —enable-zlib
    libavutil      52. 31.100 / 52. 31.100
    libavcodec     55.  9.100 / 55.  9.100
    libavformat    55.  7.100 / 55.  7.100
    libavdevice    55.  0.100 / 55.  0.100
    libavfilter     3. 65.100 /  3. 65.100
    libswscale      2.  3.100 /  2.  3.100
    libswresample   0. 17.102 /  0. 17.102
    libpostproc    52.  3.100 / 52.  3.100
  [image2 @ 0268b600] Pattern type 'glob' was selected but globbing is not 
  supported by this libavformat build
  '*.png' : Function not implemented
  

  I am working on Windows 7.