Recherche avancée

Sur d’autres sites (10891)

• Why does javaFx run converted mp4 but not original ?

  20 février 2020, par brat

  Simply put, I have this issue where I have a mp4 file with a video. If I run it directly in the code posted here, the window opens but its white/blank. No movie showing.
  But if I run the original movie through ffmpeg it works.

  ffmpeg -i original.mp4 -s hd720 converted.mp4

  Note that Im converting from mp4 to mp4, I just change the size to hd720.
  So, the question is, why do I need to do that ?

  My code :

  package mypack;
  
  
  
  import javafx.application.Application;
  
  import javafx.scene.Group;
  
  import javafx.scene.Scene;
  
  import javafx.scene.layout.BorderPane;
  
  import javafx.scene.media.Media;
  
  import javafx.scene.media.MediaPlayer;
  
  import javafx.scene.media.MediaView;
  
  import javafx.stage.Stage;
  
  
  
  public class MyPlayer extends Application{
  
  
  
      public static void main(String[] args) {
  
          launch(args);
  
      }
  
  
  
  
  
      public void start(Stage primaryStage) throws Exception {
  
          BorderPane content = new BorderPane();
  
  
  
           Scene scene = new Scene(content, 540, 209);
  
           primaryStage.setScene(scene);
  
           primaryStage.setScene(scene);
  
  
  
           primaryStage.setTitle("Hello Media");
  
  
  
           String source;
  
           source = "file:///C:/Users/Noob/Desktop/Movies/original.mp4";
  
  //       source = "file:///C:/Users/Noob/Desktop/Movies/converted.mp4";
  
  
  
  
  
           Media media = new Media(source);
  
  
  
           MediaPlayer mediaPlayer = new MediaPlayer(media);
  
           mediaPlayer.setAutoPlay(true);
  
  
  
           MediaView mediaView = new MediaView(mediaPlayer);
  
           ((BorderPane) scene.getRoot()).getChildren().add(mediaView);
  
           primaryStage.show();
  
  
  
      }
  
  
  
  }

  For those audio/video afficionados/ffmpeg pros out there. This is what gets output from the original.

  ffprobe -i original.mp4

  ffprobe version 4.2.2 Copyright (c) 2007-2019 the FFmpeg developers
  
    built with gcc 9.2.1 (GCC) 20200122
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    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
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0000029bc02bc540] st: 0 edit list: 1 Missing key frame while searching for timestamp: 0
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0000029bc02bc540] st: 0 edit list 1 Cannot find an index entry before timestamp: 0.
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'original.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2020-02-18T17:09:21.000000Z
  
    Duration: 00:00:22.56, start: 0.000000, bitrate: 1631 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 1624 kb/s, 29.97 fps, 29.97 tbr, 29970 tbn, 59.94 tbc (default)
  
      Metadata:
  
        creation_time   : 2020-02-18T17:09:21.000000Z
  
        handler_name    : Mainconcept MP4 Video Media Handler
  
        encoder         : AVC Coding

  Could it have to do with size ? To big ? Since it sayes 3840x2160 in the original ? And Im making it smaller with hd720 ?
  If so, I would expect at least a corner of the movie showing, instead of a totally blank window.
  Im new at this, so if you also give some good link to ffmpeg (excluding official manpages) and/or a good tutorial/info page on video formatting pointed towards beginners it would be much appreciated. My understanding this far is there are containers which hold streams and each stream can have different codecs depending on the container.

• How to prevent gray overlays, transparency issues, and similar shader defects when using gl-transition filters

  29 janvier 2021, par Soren Wray

  I compiled and installed a local build of ffmpeg with support for gl-transition adapted from the official guide for Ubuntu. The build is configured with all relevant packages and seems to be working as intended. See the code samples at the end.

  


  I know the gl-transition filter is installed due to ./ffmpeg -v 0 -filters | grep gltransition, which outputs :

  


  T.. gltransition      VV->V      OpenGL blend transitions

  


  All sources were tested with the custom command string : ./ffmpeg -i ~/PATH/TO/INPUT1.mp4 -i ~/PATH/TO/INPUT2.mp4 -filter_complex "gltransition=duration=3:offset=1:source=/PATH/TO/EFFECT.glsl" -y ~/PATH/TO/OUTPUT.mp4, which is for a 3 second transition effect (duration=3), starting at 1 second (offset=1).

  


  I've been testing the code sources for various transition effects listed in the gl-transition gallery and have encountered some unusual gray overlays at the transition points, likely having to do with alpha channel transparency. In many cases, there are also shader or animation defects, e.g. with windowslice.glsl rendering only 1 slice when there are supposed to be 10, or again with WaterDrop.glsl, which simply fades out the clip in place of the intended ripple effect. Most complex animations seem to default to this monotonous gray overlay. I provide a gif example below for the GlitchedMemories.glsl transition.

  


  Example of Glitched Memories

  


  I couldn't locate any other reports of this particular issue online. The documentation for gl-transitions is sorely lacking and the Stack Exchange network has very little information about this custom filter. I don't know how to fix the problem. It could have something to do with the codec or pixel format used, or some quirk of my build, but the technical details are beyond me.

  


  Please note my compilation and configuration steps, perhaps the error is there :

  


  sudo apt-get update -qq && sudo apt-get -y install autoconf automake build-essential cmake git-core libass-dev libfreetype6-dev libgnutls28-dev libsdl2-dev libtool libunistring-dev libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev pkg-config texinfo wget yasm zlib1g-dev

mkdir -p ~/ffmpeg_sources ~/bin

sudo apt-get install nasm libx264-dev libx265-dev libnuma-dev libvpx-dev libfdk-aac-dev libmp3lame-dev libopus-dev

cd ~/ffmpeg_sources && wget -O ffmpeg-snapshot.tar.bz2 https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 && tar xjvf ffmpeg-snapshot.tar.bz2

cd ~/ && git clone https://github.com/transitive-bullshit/ffmpeg-gl-transition.git


  


  Open ~/ffmpeg-gl-transition/vf_gltransition.c in an editor and delete line : # define GL_TRANSITION_USING_EGL // remove this line if you don't want to use EGL

  


  cd ~/ffmpeg_sources/ffmpeg && cp ~/ffmpeg-gl-transition/vf_gltransition.c libavfilter/

git apply ~/ffmpeg-gl-transition/ffmpeg.diff

PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
    --prefix="$HOME/ffmpeg_build" \
    --pkg-config-flags="--static" \
    --extra-cflags="-I$HOME/ffmpeg_build/include" \
    --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
    --extra-libs="-lpthread -lm" \
    --bindir="$HOME/bin" \
    --enable-gpl \
    --enable-opengl \
    --enable-gnutls \
    --enable-libass \
    --enable-libfdk-aac \
    --enable-libfreetype \
    --enable-libmp3lame \
    --enable-libopus \
    --enable-libvorbis \
    --enable-libvpx \
    --enable-libx264 \
    --enable-libx265 \
    --disable-shared \
    --enable-static \
    --enable-runtime-cpudetect \
    --enable-filter=gltransition \
    --extra-libs='-lGLEW -lglfw' \
    --enable-nonfree && \
PATH="$HOME/bin:$PATH" make

source ~/.profile


  


• Anomalie #4276 : fonctions non définies dans porte_plume_pipelines.php

  24 janvier 2019, par François Palangié

  Bonjour,

  Vous avez raison c’est la version 1.18.3 que j’ai maintenant, 1.18.1
  devait être le numéro de version avant que je réinstalle la dernière
  version de SPIP.

  Le problème était le même avec la 18.1.1 et la 18.1.3 . Le problème est
  intervenu un matin sans que j’ai rien changé, je suppose que c’est mon
  hébergeur qui a changé l’environnement et que c’est la cause du
  problème... mais c’est curieux que cela produise ce type d’erreur !

  Cordialement,

  François

  Le 24/01/2019 à 12:59, redmine@spip.org a écrit :

  La demande #4276 <https://core.spip.net/issues/4276#change-14694> a
  été mise à jour par Franck D .

  • Statut changé de /Nouveau/ à /Fermé/

  Hello :-)
  Spip 3.2.3 est dispo avec la version 1.18.3 de porte plume
  https://zone.spip.net/trac/spip-zone/browser/spip-zone/_core_/tags/spip-3.2.3/plugins/porte_plume/paquet.xml#L4
  J’ai vérifier le zip et c’est bien le cas
  https://files.spip.net/spip/archives/SPIP-v3.2.3.zip !
  Vous êtes sûr de la version que vous avez ?
  Franck

  ---

  Anomalie #4276 : fonctions non définies dans
  porte_plume_pipelines.php
  <https://core.spip.net/issues/4276#change-14694>

  • Auteur : François Palangié
  • Statut : Fermé
  • Priorité : Normal
  • Assigné à :
  • Catégorie :
  • Version cible :
  • Resolution :
  • Navigateur :

  Environnement :

  • SPIP 3.2.3 [24211]
  • Porte plume 1.18.1 - stable
  • Site : https://voyart.org
  • PHPinfo : https://voyart.org/phpinfo.php

  Problème :
  Le site fonctionne, mais quand on tente d’accéder à la partie
  privée on a ce message d’erreur, qui persiste même après une
  réinstallation de SPIP :
  Fatal error : Uncaught Error : Call to undefined function barre_outils_css_icones() in /var/www/vhosts/voyart.org/httpdocs/plugins-dist/porte_plume/porte_plume_pipelines.php:152
  Stack trace :
  #0 /var/www/vhosts/voyart.org/httpdocs/plugins-dist/porte_plume/porte_plume_pipelines.php(129) : porte_plume_insert_head_css(’

  &lt;script type=&quot;t...', true)&lt;br /&gt;&lt;a class=&quot;issue tracker-1 status-5 priority-4 priority-default closed&quot; title=&quot;Anomalie: Document distant .zip uploadés et non gardés distants (Fermé)&quot; href=&quot;https://core.spip.net/issues/1&quot;&gt;#1&lt;/a&gt; /var/www/vhosts/voyart.org/httpdocs/ecrire/inc/utils.php(199): porte_plume_insert_head_prive_css('&lt;script type=&quot;t...')&lt;br /&gt;&lt;a class=&quot;issue tracker-1 status-5 priority-4 priority-default closed&quot; title=&quot;Anomalie: Filtres sur chaines de langues de nouveau cassés (Fermé)&quot; href=&quot;https://core.spip.net/issues/2&quot;&gt;#2&lt;/a&gt; /var/www/vhosts/voyart.org/httpdocs/tmp/cache/charger_pipelines.php(596): minipipe('porte_plume_ins...', '&lt;script type=&quot;t...')&lt;br /&gt;&lt;a class=&quot;issue tracker-1 status-5 priority-3 priority-lowest closed&quot; title=&quot;Anomalie: problème de gestion de cache lors de l'installation de SPIP (Fermé)&quot; href=&quot;https://core.spip.net/issues/3&quot;&gt;#3&lt;/a&gt; /var/www/vhosts/voyart.org/httpdocs/ecrire/inc/utils.php(265): execute_pipeline_header_prive_css('&lt;script type=&quot;t...')&lt;br /&gt;&lt;a class=&quot;issue tracker-2 status-5 priority-4 priority-default closed&quot; title=&quot;Evolution: forum privé-&gt;public (Fermé)&quot; href=&quot;https://core.spip.net/issues/4&quot;&gt;#4&lt;/a&gt; /var/www/vhosts/voyart.org/httpdocs/tmp/cache/skel/html_c44cf6e196e37af7575f04c7aba04247.php(72): pipeline('header_prive_cs...', '&lt;script type=&quot;t...')&lt;br /&gt;&lt;a class=&quot;issue tracker-2 status-5 priority-4 priority-default closed&quot; title=&quot;Evolution: traduction francophone de la zone utilisant Trac (Fermé)&quot; href=&quot;https://core.spip.net/issues/5&quot;&gt;#5&lt;/a&gt; /var/www/vhosts/voyart.org/httpdocs/ecrire/public/parametrer.php(128): html_c44cf6e196e37af7575f04c7aba04247(Array, Array)&lt;br /&gt;&lt;a class=&quot;issue tracker-1 status-5 priority-4 priority-default closed&quot; title=&quot;Anomalie: Renseigner les champs &quot;component&quot;, &quot;version&quot;, .. (Fermé)&quot; href=&quot;https://core.spip.net/issues/6&quot;&gt;#6&lt;/a&gt; /var/www/vhosts/voyart.org/httpdocs/ecr in /var/www/vhosts/voyart.org/httpdocs/plugins-dist/porte_plume/porte_plume_pipelines.php on line 152&lt;/p&gt;<br />
<br />
<br />
        &lt;p&gt;Le problème est contourné en renommant le répertoire &lt;br /&gt;plugin-dist/porteplume&lt;br /&gt;Le problème ne dépend pas du navigateur firefox, edge, chrome&lt;br /&gt;Aucun problème sur le SPIP de développement installé avec &lt;br /&gt;EasyPHP-devserver sur mon ordinateur perso&lt;/p&gt;<br />
<br />
<br />
&lt;hr /&gt;<br />
<br />
<br />
        &lt;p&gt;Vous recevez ce mail car vous êtes impliqués sur ce projet.&lt;br /&gt;Pour changer les préférences d'envoi de mail, allez sur &lt;br /&gt;&lt;a class=&quot;external&quot; href=&quot;http://core.spip.net/my/account&quot;&gt;http://core.spip.net/my/account&lt;/a&gt;&lt;/p&gt;<br />
<br />
<br />
&lt;/blockquote&gt;<br />
<br />
        &lt;p&gt;---&lt;br /&gt;Cet email a fait l'objet d'une analyse antivirus par AVG.&lt;br /&gt;&lt;a class=&quot;external&quot; href='http://www.avg.com/'&gt;http://www.avg.com&lt;/a&gt;&lt;/p&gt;