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• Chrome struggles to play videos

  11 décembre 2017, par Cameron

  I have some video files I want to display on a webpage using the HTML5 video player. The videos were sent to me at 1920x1080 in H.254 MP4 format.

  Using FFMPEG I have converted them so I have a smaller Mp4 file, an OGV file, and a WebM file using the following commands :

  ffmpeg -i FILE.mp4 -vcodec h264 FILE.mp4
  
  
  
  ffmpeg -i FILE.mp4 -acodec libvorbis -vcodec libtheora -f ogv FILE.ogv
  
  
  
  ffmpeg -i FILE.mp4 -c:v libvpx -crf 10 -b:v 1M -c:a libvorbis FILE.webm

  And then the video is embedded into the page like so :

  <video preload="metadata" crossorigin="anonymous" poster="poster.jpg" controls="controls" playsinline="playsinline">
  
      <source src="FILE.webm" type="video/webm">
  
      <source src="FILE.ogv" type="video/ogv">
  
      <source src="FILE.mp4" type="video/mp4">
  
  </source></source></source></video>

  However when I click to play the video in Chrome, it stops after a few seconds and then if I click play again it restarts. If I right click and open the video in a new tab I just see a tiny player and not the video e.g.
  

  The same happens for all three formats. But if I refresh the browser enough times I can get the MP4 file to show up in the new tab though it still suffers from the aforementioned bug of playing for a few seconds before failing.

  I have tested this in Firefox and Safari and it works fine ! In fact it even works in IE and Edge :D And I can also play the videos in a player on the machine itself... e.g. QuickTime.

  Any ideas why Chrome is acting this way ? Or any resolutions ? I’m seeing the same behaviour on Chrome for Windows and Mac. Is the way I have converted the videos using FFMPEG in anyway a cause that could affect Chrome but not other browsers ?

  Chrome version tested on : Version 63.0.3239.84 (Official Build) (64-bit)

  Output from ffprobe as per the comments on the one of the webm files :

  ffprobe version 3.4 Copyright (c) 2007-2017 the FFmpeg developers
  
    built with Apple LLVM version 7.3.0 (clang-703.0.31)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-ffplay --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --enable-openssl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.3.0/include/openjpeg-2.3 --enable-nonfree
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  Input #0, matroska,webm, from 'FILE.webm':
  
    Metadata:
  
      COMPATIBLE_BRANDS: mp42mp41
  
      MAJOR_BRAND     : mp42
  
      MINOR_VERSION   : 0
  
      ENCODER         : Lavf57.83.100
  
    Duration: 00:00:52.57, start: 0.000000, bitrate: 910 kb/s
  
      Stream #0:0(eng): Video: vp8, yuv420p(progressive), 1920x1080, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
  
      Metadata:
  
        HANDLER_NAME    : Alias Data Handler
  
        ENCODER         : Lavc57.107.100 libvpx
  
        DURATION        : 00:00:52.563000000
  
      Stream #0:1(eng): Audio: vorbis, 48000 Hz, stereo, fltp (default)
  
      Metadata:
  
        HANDLER_NAME    : Alias Data Handler
  
        ENCODER         : Lavc57.107.100 libvorbis
  
        DURATION        : 00:00:52.568000000

• How to install ffmpeg for a django app on heroku ?

  10 janvier 2018, par yndolok

  I’d like to use ffmpeg to extract a frame from a video to use it as a poster. This is my first time deploying an app, let alone on heroku, so I’m not sure how to install ffmpeg on the server.

  I’ve found this build of ffmpeg with instructions to ’vendor’ it into my app, and then adjust my app’s configuration settings / path. What does it mean to vendor something ? I have a feeling it’s a rails thing, because I can’t seem to find an explanation by googling.

  Also, what would be the django equivalent of the instructions to run
  heroku config:set PATH=bin:vendor/ffmpeg/bin:<...> -a yourapp and heroku config:set LD_LIBRARY_PATH=vendor/ffmpeg/lib:/usr/local/lib -a yourapp ?

• Anomalie #4074 : Le code de plugin-dist/medias/modeles/video.html , produit un paragraphe de trop ...

  11 janvier 2018, par eldk -

  Code de base produit par SPIP
  
  
  
  
  
  
  Extrait video&nbsp ; : sens de la vie - Monthy Python - 1983 - Universal
  &lt;script&gt;/*&lt;![CDATA[*/var mejspath='plugins-dist/medias/lib/mejs/mediaelement-and-player.min.js?1508951836',mejscss='plugins-dist/medias/lib/mejs/mediaelementplayer.min.css?1508951836';<br />
  
  var mejsloader; (function(){var a=mejsloader;&quot;undefined&quot;==typeof a&amp;#38;&amp;#38;(mejsloader=a={gs:null,plug:{},css:{},init:null,c:0,cssload:null});a.init||(a.cssload=function(b){if(&quot;undefined&quot;==typeof a.css[b]){a.css[b]=!0;var c=document.createElement(&quot;link&quot;);c.href=b;c.rel=&quot;stylesheet&quot;;c.type=&quot;text/css&quot;;document.getElementsByTagName(&quot;head&quot;)[0].appendChild(c)}},a.init=function(){!0===a.gs&amp;#38;&amp;#38;function(b){jQuery(&quot;audio.mejs,video.mejs&quot;).not(&quot;.done&quot;).each(function(){function c(){var e=!0,h;for(h in d.css)a.cssload(d.css[h]);for(var f in d.plugins)&quot;undefined&quot;== typeof a.plug[f]?(e=!1,a.plug[f]=!1,jQuery.getScript(d.plugins[f],function(){a.plug[f]=!0;c()})):0==a.plug[f]&amp;#38;&amp;#38;(e=!1);e&amp;#38;&amp;#38;new MediaElementPlayer(&quot;#&quot;+b,jQuery.extend(d.options,{success:function(a){function b(){jQuery(a).closest(&quot;.mejs-inner&quot;).removeClass(a.paused?&quot;playing&quot;:&quot;paused&quot;).addClass(a.paused?&quot;paused&quot;:&quot;playing&quot;)}b();a.addEventListener(&quot;play&quot;,b,!1);a.addEventListener(&quot;playing&quot;,b,!1);a.addEventListener(&quot;pause&quot;,b,!1);a.addEventListener(&quot;paused&quot;,b,!1);g.attr(&quot;autoplay&quot;)&amp;#38;&amp;#38;a.play()}}))}var g=jQuery(this).addClass(&quot;done&quot;), b;(b=g.attr(&quot;id&quot;))||(b=&quot;mejs-&quot;+g.attr(&quot;data-id&quot;)+&quot;-&quot;+a.c++,g.attr(&quot;id&quot;,b));var d={options:{},plugins:{},css:[]},e,h;for(e in d)if(h=g.attr(&quot;data-mejs&quot;+e))d[e]=jQuery.parseJSON(h);c()})}(jQuery)});a.gs||(&quot;undefined&quot;!==typeof mejscss&amp;#38;&amp;#38;a.cssload(mejscss),a.gs=jQuery.getScript(mejspath,function(){a.gs=!0;a.init();jQuery(a.init);onAjaxLoad(a.init)}))})();/*]]&gt;*/&lt;/script&gt;
  

  
  
  
  
  
  
  Extrait video&nbsp ; : sens de la vie - Monthy Python - 1983 - Universal
  &lt;script&gt;/*&lt;![CDATA[*/var mejspath='plugins-dist/medias/lib/mejs/mediaelement-and-player.min.js?1508951836',mejscss='plugins-dist/medias/lib/mejs/mediaelementplayer.min.css?1508951836';<br />
  
  var mejsloader; (function(){var a=mejsloader;&quot;undefined&quot;==typeof a&amp;#38;&amp;#38;(mejsloader=a={gs:null,plug:{},css:{},init:null,c:0,cssload:null});a.init||(a.cssload=function(b){if(&quot;undefined&quot;==typeof a.css[b]){a.css[b]=!0;var c=document.createElement(&quot;link&quot;);c.href=b;c.rel=&quot;stylesheet&quot;;c.type=&quot;text/css&quot;;document.getElementsByTagName(&quot;head&quot;)[0].appendChild(c)}},a.init=function(){!0===a.gs&amp;#38;&amp;#38;function(b){jQuery(&quot;audio.mejs,video.mejs&quot;).not(&quot;.done&quot;).each(function(){function c(){var e=!0,h;for(h in d.css)a.cssload(d.css[h]);for(var f in d.plugins)&quot;undefined&quot;== typeof a.plug[f]?(e=!1,a.plug[f]=!1,jQuery.getScript(d.plugins[f],function(){a.plug[f]=!0;c()})):0==a.plug[f]&amp;#38;&amp;#38;(e=!1);e&amp;#38;&amp;#38;new MediaElementPlayer(&quot;#&quot;+b,jQuery.extend(d.options,{success:function(a){function b(){jQuery(a).closest(&quot;.mejs-inner&quot;).removeClass(a.paused?&quot;playing&quot;:&quot;paused&quot;).addClass(a.paused?&quot;paused&quot;:&quot;playing&quot;)}b();a.addEventListener(&quot;play&quot;,b,!1);a.addEventListener(&quot;playing&quot;,b,!1);a.addEventListener(&quot;pause&quot;,b,!1);a.addEventListener(&quot;paused&quot;,b,!1);g.attr(&quot;autoplay&quot;)&amp;#38;&amp;#38;a.play()}}))}var g=jQuery(this).addClass(&quot;done&quot;), b;(b=g.attr(&quot;id&quot;))||(b=&quot;mejs-&quot;+g.attr(&quot;data-id&quot;)+&quot;-&quot;+a.c++,g.attr(&quot;id&quot;,b));var d={options:{},plugins:{},css:[]},e,h;for(e in d)if(h=g.attr(&quot;data-mejs&quot;+e))d[e]=jQuery.parseJSON(h);c()})}(jQuery)});a.gs||(&quot;undefined&quot;!==typeof mejscss&amp;#38;&amp;#38;a.cssload(mejscss),a.gs=jQuery.getScript(mejspath,function(){a.gs=!0;a.init();jQuery(a.init);onAjaxLoad(a.init)}))})();/*]]&gt;*/&lt;/script&gt;