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  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

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  • ffmpeg replace part of audio file with looped audio

    1er décembre 2015, par user1202648

    I am quite new to ffmpeg and I am trying to replace a part of a first audio file with another second file. The second file can be too short, so some sort of loop should exist.

    After some research I came up with the following command arguments and it gives me the output as long as I only do one replacement. But I would like to do multiple replacements. So any help on what I am doing wrong ? Any suggestions/remarks on the way of working are also very welcome.

    (Any typos in the commands below can be ignored, I generate the command by script and for ease of use I simplified the names.)

    Works (One replacement) :

    "ffmpeg.exe" -y -i "first.wav" -i "second.wav" -filter_complex "[1:a][1:a][1:a]concat=n=3:v=0:a=1,asetpts=PTS-STARTPTS[replaceBase];[0:a]atrim=0:3,asetpts=PTS-STARTPTS[partA];[replaceBase]atrim=0:2,asetpts=PTS-STARTPTS[replaceA];[0:a]atrim=start=5,asetpts=PTS-STARTPTS[partB];[partA][replaceA][partB]concat=n=3:v=0:a=1[aout]" -map "[aout]" Out.wav

    Works Not (Multiple replacements) :

    "ffmpeg.exe" -y -i "first.wav" -i "second.wav" -filter_complex "[1:a][1:a][1:a]concat=n=3:v=0:a=1,asetpts=PTS-STARTPTS[replaceBase];[0:a]atrim=0:3,asetpts=PTS-STARTPTS[partA];[replaceBase]atrim=0:2,asetpts=PTS-STARTPTS[replaceA];[0:a]atrim=5:4,asetpts=PTS-STARTPTS[partB];[replaceBase]atrim=0:2,asetpts=PTS-STARTPTS[replaceB];[0:a]atrim=start=6,asetpts=PTS-STARTPTS[partC];[partA][replaceA][partB][replaceB][PartC]concat=n=4:v=0:a=1[aout]" -map "[aout]" Out.wav

    ffmpeg version N-76860-g72eaf72 Copyright (c) 2000-2015 the FFmpeg developers
    built with gcc 5.2.0 (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-libbs2b —enable-libcaca —enable-libdcadec —enable-libfreetype —enable-libgme —enable-libgsm —enable-libilbc —enable-libmodplug —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-libvidstab —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs —enable-libxvid —enable-libzimg —enable-lzma —enable-decklink —enable-zlib
    libavutil 55. 9.100 / 55. 9.100
    libavcodec 57. 16.100 / 57. 16.100
    libavformat 57. 19.100 / 57. 19.100
    libavdevice 57. 0.100 / 57. 0.100
    libavfilter 6. 15.100 / 6. 15.100
    libswscale 4. 0.100 / 4. 0.100
    libswresample 2. 0.101 / 2. 0.101
    libpostproc 54. 0.100 / 54. 0.100
    Guessed Channel Layout for Input Stream #0.0 : stereo
    Input #0, wav, from ’3897583stereo.wav’ :
    Duration : 00:00:12.07, bitrate : 256 kb/s
    Stream #0:0 : Audio : pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, 2 channels, s16, 256 kb/s
    Guessed Channel Layout for Input Stream #1.0 : stereo
    Input #1, wav, from ’beep-021.wav’ :
    Metadata :
    encoder : Lavf57.19.100
    Duration : 00:00:00.30, bitrate : 1413 kb/s
    Stream #1:0 : Audio : pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
    [wav @ 057242c0] Invalid stream specifier : replaceBase.
    Last message repeated 1 times
    Stream specifier ’STREAM CUT matches no streams.

    Thanks in advance !

  • ffmpeg replace part of audio file with looped audio gives queued buffers

    1er décembre 2015, par user1202648

    I am quite new to ffmpeg and I am trying to replace a part of a first audio file with another second file. The second file can be too short, so some sort of loop should exist.

    After some research I came up with the following command arguments and it gives me the output as long as I only do one replacement. But I would like to do multiple replacements. So any help on what I am doing wrong ? Any suggestions/remarks on the way of working are also very welcome.

    (Any typos in the commands below can be ignored, I generate the command by script and for ease of use I simplified the names.)

    Works (One replacement) :

    "ffmpeg.exe" -y -i "first.wav" -i "second.wav" -filter_complex "[1:a][1:a][1:a]concat=n=3:v=0:a=1,asetpts=PTS-STARTPTS[replaceBase];[0:a]atrim=0:3,asetpts=PTS-STARTPTS[partA];[replaceBase]atrim=0:2,asetpts=PTS-STARTPTS[replaceA];[0:a]atrim=start=5,asetpts=PTS-STARTPTS[partB];[partA][replaceA][partB]concat=n=3:v=0:a=1[aout]" -map "[aout]" Out.wav

    Works Not (Multiple replacements) :

    "ffmpeg.exe" -y -i "first.wav" -i "second.wav" -filter_complex "[1:a][1:a][1:a]concat=n=3:v=0:a=1,asetpts=PTS-STARTPTS[replaceBase];[0:a]atrim=0:3,asetpts=PTS-STARTPTS[partA];[replaceBase]atrim=0:2,asetpts=PTS-STARTPTS[replaceA];[0:a]atrim=5:4,asetpts=PTS-STARTPTS[partB];[replaceBase]atrim=0:2,asetpts=PTS-STARTPTS[replaceB];[0:a]atrim=start=6,asetpts=PTS-STARTPTS[partC];[partA][replaceA][partB][replaceB][PartC]concat=n=4:v=0:a=1[aout]" -map "[aout]" Out.wav

    ffmpeg version N-76860-g72eaf72 Copyright (c) 2000-2015 the FFmpeg developers
    built with gcc 5.2.0 (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-libbs2b —enable-libcaca —enable-libdcadec —enable-libfreetype —enable-libgme —enable-libgsm —enable-libilbc —enable-libmodplug —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-libvidstab —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs —enable-libxvid —enable-libzimg —enable-lzma —enable-decklink —enable-zlib
    libavutil 55. 9.100 / 55. 9.100
    libavcodec 57. 16.100 / 57. 16.100
    libavformat 57. 19.100 / 57. 19.100
    libavdevice 57. 0.100 / 57. 0.100
    libavfilter 6. 15.100 / 6. 15.100
    libswscale 4. 0.100 / 4. 0.100
    libswresample 2. 0.101 / 2. 0.101
    libpostproc 54. 0.100 / 54. 0.100
    Guessed Channel Layout for Input Stream #0.0 : stereo
    Input #0, wav, from ’3897583stereo.wav’ :
    Duration : 00:00:12.07, bitrate : 256 kb/s
    Stream #0:0 : Audio : pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, 2 channels, s16, 256 kb/s
    Guessed Channel Layout for Input Stream #1.0 : stereo
    Input #1, wav, from ’beep-021.wav’ :
    Metadata :
    encoder : Lavf57.19.100
    Duration : 00:00:00.30, bitrate : 1413 kb/s
    Stream #1:0 : Audio : pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
    [wav @ 057242c0] Invalid stream specifier : replaceBase.
    Last message repeated 1 times
    Stream specifier ’STREAM CUT matches no streams.

    Thanks in advance !

  • capture video with kinect using libfreenect

    20 avril 2016, par Sadra Naddaf

    i m trying to use kinect to capture video for video/image processing purposes
    i found there is an script in libfreenect/build/bin folder named fakenect-record can do this for me

    when i use it,it start capturing rgb and depth data in ppm and pgm format(both are images) and also it has an option (-ffmpeg) witch make an avi file of video but the problem is when I that it it fails and says this error :

    Depth Mode: {256, 1, {0}, 614400, 640, 480, 11, 5, 30, 1}
    
Video Mode: {256, 1, {0}, 921600, 640, 480, 24, 0, 30, 1}
    
[Stream 70] Expected 1748 data bytes, but got 948
    
ffmpeg -pix_fmt rgb24 -s 640x480 -f rawvideo -i /dev/stdin -aspect 4:3 -r 20 -vcodec msmpeg4 -b 30000k sadra-depth.avi
    
ffmpeg -pix_fmt rgb24 -s 640x480 -f rawvideo -i /dev/stdin -aspect 4:3 -r 20 -vcodec msmpeg4 -b 30000k sadra-rgb.avi
    
ffmpeg version N-76045-g97be5d4ffmpeg version N-76045-g97be5d4 Copyright (c) 2000-2015 the FFmpeg developers Copyright (c) 2000-2015 the FFmpeg developers
    

    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
    
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libdcadec --enable-libfreetype --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
    
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libdcadec --enable-libfreetype --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
    
  libavutil      55.  4.100 / 55.  4.100
    
  libavutil      55.  4.100 / 55.  4.100
    
  libavcodec     57.  6.100 / 57.  6.100
    
  libavcodec     57.  6.100 / 57.  6.100
    
  libavformat    57.  4.100 / 57.  4.100
    
  libavformat    57.  4.100 / 57.  4.100
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6. 11.100 /  6. 11.100
    
  libavfilter     6. 11.100 /  6. 11.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.100 /  2.  0.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
  libswresample   2.  0.100 /  2.  0.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
Segmentation fault (core dumped)
    
root@thispc-sns:~/Documents/libfreenect/build/bin/Untitled Folder# Input #0, rawvideo, from '/dev/stdin':
    
  Duration: N/A, bitrate: 184320 kb/s
    
    Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 640x480, 184320 kb/s, 25 tbr, 25 tbn, 25 tbc
    
Please use -b:a or -b:v, -b is ambiguous
    
Input #0, rawvideo, from '/dev/stdin':
    
  Duration: N/A, start: 0.000000, bitrate: 184320 kb/s
    
    Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 640x480, 184320 kb/s, 25 tbr, 25 tbn, 25 tbc
    
Please use -b:a or -b:v, -b is ambiguous
    
Output #0, avi, to 'sadra-depth.avi':
    
Output #0, avi, to 'sadra-rgb.avi':
    
  Metadata:
    
    ISFT            :   Metadata:
    
    ISFT            : Lavf57.4.100Lavf57.4.100
    

    
    Stream #0:0    Stream #0:0: Video: msmpeg4v3 (msmpeg4) (MP43 / 0x3334504D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 30000 kb/s: Video: msmpeg4v3 (msmpeg4) (MP43 / 0x3334504D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 30000 kb/s, , 20 fps, 20 fps, 20 tbn, 20 tbn, 20 tbc20 tbc
    

    
    Metadata:
    
    Metadata:
    
      encoder         : Lavc57.6.100 msmpeg4      encoder         : Lavc57.6.100 msmpeg4
    
Stream mapping:
    

    
  Stream #0:0 -> #0:0Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> msmpeg4v3 (msmpeg4))
    
 (rawvideo (native) -> msmpeg4v3 (msmpeg4))
    
***[rawvideo @ 0x2a31ce0] Invalid buffer size, packet size 483328 < expected frame_size 921600
    
Error while decoding stream #0:0: Invalid argument
    
frame=    0 fps=0.0 q=0.0 Lsize=       6kB time=00:00:00.00*** bitrate=N/A    
    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
    
frame=    0 fps=0.0 q=0.0 Lsize=       6kB time=00:00:00.00 bitrate=N/A    
    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
    
Conversion failed!

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