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  • MediaSPIP : Modification des droits de création d’objets et de publication définitive

    11 novembre 2010, par

    Par défaut, MediaSPIP permet de créer 5 types d’objets.
    Toujours par défaut les droits de création et de publication définitive de ces objets sont réservés aux administrateurs, mais ils sont bien entendu configurables par les webmestres.
    Ces droits sont ainsi bloqués pour plusieurs raisons : parce que le fait d’autoriser à publier doit être la volonté du webmestre pas de l’ensemble de la plateforme et donc ne pas être un choix par défaut ; parce qu’avoir un compte peut servir à autre choses également, (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Déploiements possibles

    31 janvier 2010, par

    Deux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
    L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
    Version mono serveur
    La version mono serveur consiste à n’utiliser qu’une (...)

Sur d’autres sites (6011)

  • doc : Add note about recent regression in AviSynth+

    29 octobre 2016, par Stephen Hutchinson
    doc : Add note about recent regression in AviSynth+

    Signed-off-by : Diego Biurrun <diego@biurrun.de>
    • [DBH] doc/general.texi

  • 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.

  • 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.

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