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  • Formulaire personnalisable

    21 juin 2013, par

    Cette page présente les champs disponibles dans le formulaire de publication d’un média et il indique les différents champs qu’on peut ajouter. Formulaire de création d’un Media
    Dans le cas d’un document de type média, les champs proposés par défaut sont : Texte Activer/Désactiver le forum ( on peut désactiver l’invite au commentaire pour chaque article ) Licence Ajout/suppression d’auteurs Tags
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire. (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

  • Qu’est ce qu’un masque de formulaire

    13 juin 2013, par

    Un masque de formulaire consiste en la personnalisation du formulaire de mise en ligne des médias, rubriques, actualités, éditoriaux et liens vers des sites.
    Chaque formulaire de publication d’objet peut donc être personnalisé.
    Pour accéder à la personnalisation des champs de formulaires, il est nécessaire d’aller dans l’administration de votre MediaSPIP puis de sélectionner "Configuration des masques de formulaires".
    Sélectionnez ensuite le formulaire à modifier en cliquant sur sont type d’objet. (...)

Sur d’autres sites (9179)

  • Speed change command fails when audio stream is not present in video - ffmpeg

    26 juillet 2016, par lalith

    I am trying to change speed of the video that does not contain audio stream via below command

    String[]{"ffmpeg", "-y", "-i", orginalFile, "-threads", "5", "-preset", "ultrafast", "-strict", "experimental", "-filter_complex", "[0:v]setpts=0.50*PTS[v];[0:a]atempo=2.0[a]", "-map", "[v]", "-map", "[a]", "-b", "2097k", "-ab", "48000", "-ac", "2", "-ar", "22050", "-vcodec", "mpeg4", destinationFile};

    Command fails stating that video does not have audio stream. So, do I need to check whether audio stream is present in the video or is there something I can do in this scenario ?

  • FFMPEG record http video stream with normal speed

    18 mai 2017, par user3119509

    I’m recording an http stream from my IP Camera (TPLINK NC200), using this command :

    ffmpeg -i http://admin:YWRtaW4=@192.168.0.18:8080/stream/getvideo -t 30 -acodec copy -vcodec copy abc.mp4

    As you can see , the video length is set to 30 seconds ( -t option ) . But it takes about 1 minute 30 seconds to record , and the video speed is very high ( the camera recording a stopwatch and a 30-second video recorded the timer to 1 minute and 11 seconds ).

    Is there some ffmpeg option to get a normal speed video ? Or the problem is the camera configuration ?

  • ffmpeg concat doesn't keep video speed/framerate ?

    28 août 2016, par Nick

    I have a bunch of small webm clips in directory vidchunks. These clips were generated using javascript MediaRecorder API.

    MediaRecorder code :

    var mRecorder;
    
var chunks = [];
    
navigator.mediaDevices.getUserMedia({
    
  audio: false,
    
  video: {
    
  width: 1280,
    
  height: 760,
    
  mozMediaSource: "screen",
    
  mediaSource: "screen"
    
}
    
}).then(function(stream) {
    
  mRecorder = new MediaRecorder(stream,{mimeType:"video/webm"});
    
  mRecorder.ondataavailable = function(event) {
    
    var blob = event.data;
    
    chunks.push(blob);
    
    var vidchunk = new Blob(chunks);
    
    // save to directory vid chunk.
    
  };
    
  mRecorder.start(5000);
    
}).catch(function(error) {
    
  console.log(error.message);
    
});

    Then, once I have a bunch of these 5 second clips, I merge them :

    ffmpeg -safe 0 \
    
-f concat -i <(for f in `ls vidchunks/* | sort -V`; do echo file $f; done) \
    
-c:v copy -r 30 -vsync drop test.webm

    When I play back these chunks individually, they play correctly. All 5 seconds of video are rendered smoothly.

    However, once I merge, some 5 second chunks are condensed to like 1 second. So the total video, which should be 50 seconds for 10 chunks, turns out to be like 38 seconds because three of the chunks got condensed to 1 second.

    Any ideas on how to fix this ?

    EDIT : I’ve tried :

    • without "-r 30 -vsync drop"
    • without "-c:v copy"

    No changes...

    EDIT2 (some ffprobe outputs) :

    ffprobe 1472343170-1.webm

    ffprobe version 2.8.6-1ubuntu2 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
    
  configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
    
  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, matroska,webm, from '1472343170-1.webm':
    
  Metadata:
    
    encoder         : Chrome
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x760, SAR 1:1 DAR 32:19, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)

    ffprobe 1472343245-16.webm

    ffprobe version 2.8.6-1ubuntu2 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
    
  configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
    
  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, matroska,webm, from '1472343245-16.webm':
    
  Metadata:
    
    encoder         : Chrome
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x760, SAR 1:1 DAR 32:19, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)

    ffprobe 1472343350-37.webm

    ffprobe version 2.8.6-1ubuntu2 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
    
  configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
    
  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, matroska,webm, from '1472343350-37.webm':
    
  Metadata:
    
    encoder         : Chrome
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x760, SAR 1:1 DAR 32:19, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)

    I also noticed that the merged video plays normal when the mouse is moving around on the screen, but when the mouse is not moving, it moves 5x faster.

    I know this because I have a timer on the screen that I’m recording, and I can see that the timer speeds up significantly when mouse isn’t moving but when mouse is moving, the timer moves at normal speed.

    EDIT3 :
    The DTS/PTS looks like resets after each file is merged :

    DTS -9223363446915256, next:6866667 st:0 invalid dropping
    
PTS -9223363446915256, next:6866667 invalid dropping st:0
    
DTS -9223363446915222, next:6900000 st:0 invalid dropping
    
PTS -9223363446915222, next:6900000 invalid dropping st:0
    
DTS -9223363446915188, next:6933333 st:0 invalid dropping
    
PTS -9223363446915188, next:6933333 invalid dropping st:0
    
[concat @ 0x1cde3e0] DTS -9223363446920184 < 5006 out of order
    
DTS -9223363446920184, next:5033333 st:0 invalid dropping
    
PTS -9223363446920184, next:5033333 invalid dropping st:0
    
DTS -9223363446920056, next:5066667 st:0 invalid dropping
    
PTS -9223363446920056, next:5066667 invalid dropping st:0
    
DTS -9223363446919956, next:5100000 st:0 invalid dropping
    
PTS -9223363446919956, next:5100000 invalid dropping st:0

    EDIT4 : Tried ffmpeg -i "$f" -y -c copy -fflags +genpts "$f" and then merge again.

    Works a lot better, but now other files are getting skipped.

    Here’s ffprobe from a file that’s skipped :

    Metadata:
    
    encoder         : Lavf56.40.101
    
  Duration: 00:00:01.17, start: 0.000000, bitrate: 428 kb/s
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x760, SAR 1:1 DAR 32:19, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
    
[webm @ 0x1c01940] Codec for stream 0 does not use global headers but container format requires global headers
    
Output #0, webm, to '1472343225-12.webm':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x760 [SAR 1:1 DAR 32:19], q=2-31, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)

    Here’s ffprobe from a file not skipped :

    Input #0, matroska,webm, from '1472343215-10.webm':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
  Duration: 00:00:05.03, start: 0.000000, bitrate: 80 kb/s
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x760, SAR 1:1 DAR 32:19, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
    
[webm @ 0x1349940] Codec for stream 0 does not use global headers but container format requires global headers
    
Output #0, webm, to '1472343215-10.webm':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x760 [SAR 1:1 DAR 32:19], q=2-31, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)

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