Recherche avancée

Médias (1)

Mot : - Tags -/Rennes

Autres articles (61)

  • 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

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

Sur d’autres sites (9322)

  • How to read video frame by frame in C# .NET Framework 4.8 ?

    27 septembre 2022, par Brendan Hill

    I need to read a video file (.mkv format, h264, 1280x720) frame by frame for video processing.

    


    I am stuck with .NET Framework 4.8 due to dependencies.

    


    Having tried Accord.net VideoFileReader I am unable to read them due to :

    


    [matroska,webm @ 0000024eb36e5c00] Could not find codec parameters for stream 0 (Video: h264, none(progressive), 1280x720): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Assertion desc failed at src/libswscale/swscale_internal.h:674


    


    Unfortunately Accord.NET does not give me much control over the ffmpeg request and the project seems to have died (and .NET Framework has died (and C# has died)).

    


    What are some alternatives which would allow me to read a .mkv file in h264 format frame by frame ?

    


    NOTE - FFmpeg.NET does not seem to support getting frame bitmaps ; neither does MediaToolkit :(

    


    NOTE - this page has the same problem (last comment 2020) but no resolution :( https://github.com/accord-net/framework/issues/713

    


  • FFMPEG code not generating thumbnail, but it was working before [closed]

    25 mars 2020, par Shijil

    I want to save thumbnails in my website using this simple FFMPEG code.
    I tried to run it, but it shows error

        <?php
    

    

    
$file="Videos/bloodshot.mp4";
    
$vname="bloodshot";
    

    
$W = intval($_GET['file']);
    
$H = intval($_GET['file']);
    

    
if(substr($file,0,1) != '.'){
    

    
$mov = new ffmpeg_movie($file);
    
$wn = $mov->GetFrameWidth();
    
$hn = $mov->GetFrameHeight();
    

    
$frame = $mov->getFrame(32);
    

    
$gd = $frame->toGDImage();
    

    
if(!$W and !$H)
    
{
    

    
$W = $neww; // width of the image
    
$H = $newh; // height image
    
}
    

    

    
$new = imageCreateTrueColor($W, $H);
    
imageCopyResized($new, $gd, 0, 0, 0, 0, $neww, $newh, $wn, $hn);
    
$black = imagecolorallocate($new, 255, 255, 255);
    
imagegif($new);
    
imagegif ($new, './thumb/success.gif', 100);
    
}
    
?>

    error log is

    [25-Mar-2020 14:52:31 UTC] PHP Fatal error:  Uncaught Error: Class 'ffmpeg_movie' not found in /home/xxxxxxx/public_html/Videos/ffmpeg.php:12
    
Stack trace:
    
#0 {main}
    
  thrown in /home/xxxxxxx/public_html/Videos/ffmpeg.php on line 12

    I was able to run it without error in a mobile site few years ago. But it seems to be not working now.
    Server has FFMPEG support.
    I am not an expert in php, please fix this code for me.

  • Why is the filesize different when swapping audio tracks using ffmeg ?

    20 août 2021, par Brian

    I have a movie that I have encoded using Handbrake on a Mac a long time ago. When I encoded the movie, I put the stereo audio as track 1 and the 5.1 audio as track 2. The starting filesize is 853,320,914 bytes. Below is the data from ffprobe.

    


    ffprobe version 4.2.1-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2007-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Annabelle - Comes Home (2019).m4v':
  Metadata:
    major_brand     : mp42
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 2020-04-06T22:40:36.000000Z
    encoder         : HandBrake 1.1.2 2018090500
  Duration: 01:46:04.86, start: 0.000000, bitrate: 1072 kb/s
    Chapter #0:0: start 0.000000, end 476.986000
    Metadata:
      title           : Chapter 1
    Chapter #0:1: start 476.986000, end 933.608000
    Metadata:
      title           : Chapter 2
    Chapter #0:2: start 933.608000, end 1441.449000
    Metadata:
      title           : Chapter 3
    Chapter #0:3: start 1441.449000, end 1976.358000
    Metadata:
      title           : Chapter 4
    Chapter #0:4: start 1976.358000, end 2579.753000
    Metadata:
      title           : Chapter 5
    Chapter #0:5: start 2579.753000, end 3149.030000
    Metadata:
      title           : Chapter 6
    Chapter #0:6: start 3149.030000, end 3726.941000
    Metadata:
      title           : Chapter 7
    Chapter #0:7: start 3726.941000, end 3973.520000
    Metadata:
      title           : Chapter 8
    Chapter #0:8: start 3973.520000, end 4504.676000
    Metadata:
      title           : Chapter 9
    Chapter #0:9: start 4504.676000, end 4904.409000
    Metadata:
      title           : Chapter 10
    Chapter #0:10: start 4904.409000, end 5421.592000
    Metadata:
      title           : Chapter 11
    Chapter #0:11: start 5421.592000, end 5998.001000
    Metadata:
      title           : Chapter 12
    Chapter #0:12: start 5998.001000, end 6364.075000
    Metadata:
      title           : Chapter 13
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 720x360 [SAR 32:27 DAR 64:27], 519 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 162 kb/s (default)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : Stereo
    Stream #0:2(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 384 kb/s
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : Surround
    Side data:
      audio service type: main
    Stream #0:3(eng): Data: bin_data (text / 0x74786574)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : SubtitleHandler
Unsupported codec with id 100359 for input stream 3


    


    My goal is to swap the stereo audio track with the 5.1 audio track and make the 5.1 audio track the default without having to reencode. To do this, I used the following command :

    


    ffmpeg -i "Annabelle - Comes Home (2019)/Annabelle - Comes Home (2019)_old.m4v" -map 0:v:0 -map 0:a:1 -map 0:a:0 -disposition:a:0 default -disposition:a:1 none -c copy "Annabelle - Comes Home (2019)/Annabelle - Comes Home (2019).m4v"

    


    Everything works as it should, I think anyways as I didn't get any errors...

    


    ffmpeg version 4.2.1-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Annabelle - Comes Home (2019)/Annabelle - Comes Home (2019)_old.m4v':
  Metadata:
    major_brand     : mp42
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 2020-04-06T22:40:36.000000Z
    encoder         : HandBrake 1.1.2 2018090500
  Duration: 01:46:04.86, start: 0.000000, bitrate: 1072 kb/s
    Chapter #0:0: start 0.000000, end 476.986000
    Metadata:
      title           : Chapter 1
    Chapter #0:1: start 476.986000, end 933.608000
    Metadata:
      title           : Chapter 2
    Chapter #0:2: start 933.608000, end 1441.449000
    Metadata:
      title           : Chapter 3
    Chapter #0:3: start 1441.449000, end 1976.358000
    Metadata:
      title           : Chapter 4
    Chapter #0:4: start 1976.358000, end 2579.753000
    Metadata:
      title           : Chapter 5
    Chapter #0:5: start 2579.753000, end 3149.030000
    Metadata:
      title           : Chapter 6
    Chapter #0:6: start 3149.030000, end 3726.941000
    Metadata:
      title           : Chapter 7
    Chapter #0:7: start 3726.941000, end 3973.520000
    Metadata:
      title           : Chapter 8
    Chapter #0:8: start 3973.520000, end 4504.676000
    Metadata:
      title           : Chapter 9
    Chapter #0:9: start 4504.676000, end 4904.409000
    Metadata:
      title           : Chapter 10
    Chapter #0:10: start 4904.409000, end 5421.592000
    Metadata:
      title           : Chapter 11
    Chapter #0:11: start 5421.592000, end 5998.001000
    Metadata:
      title           : Chapter 12
    Chapter #0:12: start 5998.001000, end 6364.075000
    Metadata:
      title           : Chapter 13
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 720x360 [SAR 32:27 DAR 64:27], 519 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 162 kb/s (default)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : Stereo
    Stream #0:2(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 384 kb/s
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : Surround
    Side data:
      audio service type: main
    Stream #0:3(eng): Data: bin_data (text / 0x74786574)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : SubtitleHandler
[ipod @ 0x7faff0014000] track 1: codec frame size is not set
Output #0, ipod, to 'Annabelle - Comes Home (2019)/Annabelle - Comes Home (2019).m4v':
  Metadata:
    major_brand     : mp42
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
    Chapter #0:0: start 0.000000, end 476.986000
    Metadata:
      title           : Chapter 1
    Chapter #0:1: start 476.986000, end 933.608000
    Metadata:
      title           : Chapter 2
    Chapter #0:2: start 933.608000, end 1441.449000
    Metadata:
      title           : Chapter 3
    Chapter #0:3: start 1441.449000, end 1976.358000
    Metadata:
      title           : Chapter 4
    Chapter #0:4: start 1976.358000, end 2579.753000
    Metadata:
      title           : Chapter 5
    Chapter #0:5: start 2579.753000, end 3149.030000
    Metadata:
      title           : Chapter 6
    Chapter #0:6: start 3149.030000, end 3726.941000
    Metadata:
      title           : Chapter 7
    Chapter #0:7: start 3726.941000, end 3973.520000
    Metadata:
      title           : Chapter 8
    Chapter #0:8: start 3973.520000, end 4504.676000
    Metadata:
      title           : Chapter 9
    Chapter #0:9: start 4504.676000, end 4904.409000
    Metadata:
      title           : Chapter 10
    Chapter #0:10: start 4904.409000, end 5421.592000
    Metadata:
      title           : Chapter 11
    Chapter #0:11: start 5421.592000, end 5998.001000
    Metadata:
      title           : Chapter 12
    Chapter #0:12: start 5998.001000, end 6364.075000
    Metadata:
      title           : Chapter 13
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 720x360 [SAR 32:27 DAR 64:27], q=2-31, 519 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 90k tbc (default)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 384 kb/s (default)
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : Surround
    Side data:
      audio service type: main
    Stream #0:2(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 162 kb/s
    Metadata:
      creation_time   : 2020-04-06T22:40:36.000000Z
      handler_name    : Stereo
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:2 -> #0:1 (copy)
  Stream #0:1 -> #0:2 (copy)
Press [q] to stop, [?] for help
frame=152602 fps=12872 q=-1.0 Lsize=  834270kB time=01:46:04.79 bitrate=1073.8kbits/s speed= 537x    
video:403702kB audio:424714kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.706676%


    


    Here is the resulting ffprobe of the new file showing it swapped the audio tracks :

    


    ffprobe version 4.2.1-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2007-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Annabelle - Comes Home (2019).m4v':
  Metadata:
    major_brand     : M4V 
    minor_version   : 512
    compatible_brands: isomiso2avc1
    encoder         : Lavf58.29.100
  Duration: 01:46:04.86, start: 0.000000, bitrate: 1073 kb/s
    Chapter #0:0: start 0.000000, end 476.986000
    Metadata:
      title           : Chapter 1
    Chapter #0:1: start 476.986000, end 933.608000
    Metadata:
      title           : Chapter 2
    Chapter #0:2: start 933.608000, end 1441.449000
    Metadata:
      title           : Chapter 3
    Chapter #0:3: start 1441.449000, end 1976.358000
    Metadata:
      title           : Chapter 4
    Chapter #0:4: start 1976.358000, end 2579.753000
    Metadata:
      title           : Chapter 5
    Chapter #0:5: start 2579.753000, end 3149.030000
    Metadata:
      title           : Chapter 6
    Chapter #0:6: start 3149.030000, end 3726.941000
    Metadata:
      title           : Chapter 7
    Chapter #0:7: start 3726.941000, end 3973.520000
    Metadata:
      title           : Chapter 8
    Chapter #0:8: start 3973.520000, end 4504.676000
    Metadata:
      title           : Chapter 9
    Chapter #0:9: start 4504.676000, end 4904.409000
    Metadata:
      title           : Chapter 10
    Chapter #0:10: start 4904.409000, end 5421.592000
    Metadata:
      title           : Chapter 11
    Chapter #0:11: start 5421.592000, end 5998.001000
    Metadata:
      title           : Chapter 12
    Chapter #0:12: start 5998.001000, end 6364.075000
    Metadata:
      title           : Chapter 13
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 720x360 [SAR 32:27 DAR 64:27], 519 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 384 kb/s (default)
    Metadata:
      handler_name    : Surround
    Side data:
      audio service type: main
    Stream #0:2(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 162 kb/s
    Metadata:
      handler_name    : Stereo
    Stream #0:3(eng): Data: bin_data (text / 0x74786574)
    Metadata:
      handler_name    : SubtitleHandler
Unsupported codec with id 100359 for input stream 3


    


    What I don't understand is why is the file size different ? The resulting file is larger at 854,292,790 bytes. Shouldn't the file sizes be the same since I literally just swapped tracks 0 and 1 ?

    


Navigation