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  • XMP PHP

    13 mai 2011, par

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
    Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
    XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

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  • Detect rotation angle and rotate final video using ffmpeg version 2.8

    9 novembre 2017, par Hemant Kumar

    I used to work on ffmpeg 2.2 until now and was detecting rotation angle of video uploaded from android / iPhone mobiles and rotate the resulting video so that it run perfectly on a correct angle.

    But since I have updated the ffmpeg to version 2.8 I am getting this rotation problem. My queries are not rotating the videos as they were earlier.

    Here’r the commands I was using :

    To check rotation angle :

    ffprobe -of json -show_streams {$input} | grep rotate

    below is my final command to convert a video to mp4

    "ffmpeg -i {$input} -strict -2 -vcodec libx264 -preset slow -vb 500k -maxrate 500k -bufsize 1000k -vf 'scale=-1:480 ".fix_video_orientation($input)."' -threads 0 -ab 64k -s {$resolution}  -movflags faststart -metadata:s:v:0 rotate=0 {$output}";

    "fix_video_orientation" function is given below. It detect the angle of rotation of the initial video and output optimal option for rotating the final video.

    function fix_video_orientation($input){

    $return= ", transpose=1 ";

    $dd= exec("ffprobe -of json -show_streams  {$input}   | grep rotate");

    if(!empty($dd)){

    $dd=explode(":",$dd);
    $rotate=str_replace(",","",str_replace('"',"",$dd[1]));

    if($rotate=="90")return $return;

    else if ($rotate=="180") return ", transpose=2,transpose=2 ";

    else if($rotate == "270") return ", transpose=2 ";
    }

    Currently above script is supporting "flv","avi","mp4","mkv","mpg","wmv","asf","webm","mov","3gp","3gpp" extensions, also the script is supporting the resulting .mp4 file to play on all browsers and devices.

    Now the ffprobe command is not returning rotation angle and so a portrait video if uploaded from iphone is showing as landscape on the website.

    Output console of ffprobe command :

    ffprobe version N-77455-g4707497 Copyright (c) 2007-2015 the FFmpeg developers
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
    configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --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. 11.100 / 55. 11.100
    libavcodec 57. 20.100 / 57. 20.100
    libavformat 57. 20.100 / 57. 20.100
    libavdevice 57. 0.100 / 57. 0.100
    libavfilter 6. 21.101 / 6. 21.101
    libavresample 3. 0. 0 / 3. 0. 0
    libswscale 4. 0.100 / 4. 0.100
    libswresample 2. 0.101 / 2. 0.101
    libpostproc 54. 0.100 / 54. 0.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/standard/PORTRAIT.m4v':
    Metadata:
    major_brand : qt

    minor_version : 0
    compatible_brands: qt

    creation_time : 2016-02-03 05:25:18
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 4S
    com.apple.quicktime.software: 9.2.1
    com.apple.quicktime.creationdate: 2016-02-03T10:52:11+0530
    Duration: 00:00:03.34, start: 0.000000, bitrate: 7910 kb/s
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 720x1280 [SAR 1:1 DAR 9:16], 7832 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 50 tbc (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    encoder : H.264
    Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    Unsupported codec with id 0 for input stream 2
    Unsupported codec with id 0 for input stream 3

    If latest version of ffmpeg (2.8) is used to auto rotate the video, can you please suggest me what option I need to add or remove from my final command.

  • Detect rotation angle and rotate final video using ffmpeg version 2.8

    3 février 2016, par Hemant Kumar

    I used to work on ffmpeg 2.2 until now and was detecting rotation angle of video uploaded from android / iPhone mobiles and rotate the resulting video so that it run perfectly on a correct angle.

    But since I have updated the ffmpeg to version 2.8 I am getting this rotation problem. My queries are not rotating the videos as they were earlier.

    Here’r the commands I was using :

    To check rotation angle :

    ffprobe -of json -show_streams {$input} | grep rotate

    below is my final command to convert a video to mp4

    "ffmpeg -i {$input} -strict -2 -vcodec libx264 -preset slow -vb 500k -maxrate 500k -bufsize 1000k -vf 'scale=-1:480 ".fix_video_orientation($input)."' -threads 0 -ab 64k -s {$resolution}  -movflags faststart -metadata:s:v:0 rotate=0 {$output}";

    "fix_video_orientation" function is given below. It detect the angle of rotation of the initial video and output optimal option for rotating the final video.

    function fix_video_orientation($input){

    $return= ", transpose=1 ";

    $dd= exec("ffprobe -of json -show_streams  {$input}   | grep rotate");

    if(!empty($dd)){

    $dd=explode(":",$dd);
    $rotate=str_replace(",","",str_replace('"',"",$dd[1]));

    if($rotate=="90")return $return;

    else if ($rotate=="180") return ", transpose=2,transpose=2 ";

    else if($rotate == "270") return ", transpose=2 ";
    }

    Currently above script is supporting "flv","avi","mp4","mkv","mpg","wmv","asf","webm","mov","3gp","3gpp" extensions, also the script is supporting the resulting .mp4 file to play on all browsers and devices.

    Now the ffprobe command is not returning rotation angle and so a portrait video if uploaded from iphone is showing as landscape on the website.

    Output console of ffprobe command :

    ffprobe version N-77455-g4707497 Copyright (c) 2007-2015 the FFmpeg developers
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
    configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --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. 11.100 / 55. 11.100
    libavcodec 57. 20.100 / 57. 20.100
    libavformat 57. 20.100 / 57. 20.100
    libavdevice 57. 0.100 / 57. 0.100
    libavfilter 6. 21.101 / 6. 21.101
    libavresample 3. 0. 0 / 3. 0. 0
    libswscale 4. 0.100 / 4. 0.100
    libswresample 2. 0.101 / 2. 0.101
    libpostproc 54. 0.100 / 54. 0.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/standard/PORTRAIT.m4v':
    Metadata:
    major_brand : qt

    minor_version : 0
    compatible_brands: qt

    creation_time : 2016-02-03 05:25:18
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 4S
    com.apple.quicktime.software: 9.2.1
    com.apple.quicktime.creationdate: 2016-02-03T10:52:11+0530
    Duration: 00:00:03.34, start: 0.000000, bitrate: 7910 kb/s
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 720x1280 [SAR 1:1 DAR 9:16], 7832 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 50 tbc (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    encoder : H.264
    Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
    creation_time : 2016-02-03 05:25:18
    handler_name : Core Media Data Handler
    Unsupported codec with id 0 for input stream 2
    Unsupported codec with id 0 for input stream 3

    If latest version of ffmpeg (2.8) is used to auto rotate the video, can you please suggest me what option I need to add or remove from my final command.