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• Revision 32453 : on renomme xcache en memoization, puisque c’est de ca qu’il s’agit ...

  29 octobre 2009, par fil@… — Log

  on renomme xcache en memoization, puisque c’est de ca qu’il s’agit  http://fr.wikipedia.org/wiki/Memoization (merci a Thomas Sutton)
  le memo filecache.inc se limite a 16^{4 fichiers, ce qui fait qu’il n’y a plus besoin de garbage collector}

• Issue in displaying Large Video Files in MedisElement using ASP.NET JQuery

  13 novembre 2015, par SarahN

  There are some large .Mp4 files encoded with FFmpeg in another
  project .

  I use MediaElement.js to display the video for user (look after the video name in another server, copy it into a Webserver location , and play it) .
  for larger video files, they Cant be played . Does it mean MediaElement load whole Video file , and then play them ?
  What should I do for buffering separate section , to avoid this issue ?

  This is the code I use :

     if ($('#player1')) {
  
          player = new MediaElementPlayer("#player1",
  
                {
  
                  //...
  
                  alwaysShowControls: true,
  
                  success: function(mediaElement, domObject) {
  
                         mediaElement.play();
  
                                                             }
  
                });
  
          }

  I found this link MediaElement.js - Flash Video Wont Play Until Fully Loaded , I ’m not sure if its useful for me or not ?

  Please let me know if any solution comes into your mind, Thanks .

• Is there a way to tell ffmpeg certain images are I-frames [closed]

  25 juillet 2024, par nilgirian

  I was thinking a lot about continuous zoom animation. One way to do this is to generate each frame as png and then dump it into ffmpeg and get video.

  


  If I want to cut down on processing time, I was thinking I could generate every n-frames (let's say in this case every 4 frames as an example). Then the in-between frames I'd just crop and resize that initial frame.

  


  So essentially I have an "artificial" GOP (for lack of a better name) so my first artificial GOP :

  


  

  • 0.png - fully rendered image (keyframe)

  


  • 1.png - crop and zoom of 0.png

  


  • 2.png - crop and zoom of 1.png

  


  • 3.png - crop and zoom of 2.png

  


  


  My second artificial GOP :

  


  

  • 4.png - fully rendered image (keyframe)

  


  • 5.png - crop and zoom of 4.png

  


  • 6.png - crop and zoom of 5.png

  


  • 7.png - crop and zoom of 6.png

  


  


  Rinse repeat until end of video.

  


  My question here would be is there a way to tell ffmpeg or some other tool that every 4th frame are actual I-frames, and probably shouldn't be touched.

  


  The idea being that if I want to extend the size of my artificial GOP as much as possible without losing too much detail I'd like to tell ffmpeg to not make an I-frame out of a lossy (cropped and zoomed) pngs.