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• Revision 33677 : une structure commune avec le plugin commentaires, mais : - qui n’est pas ...

  11 décembre 2009, par cedric@… — Log

  une structure commune avec le plugin commentaires, mais : - qui n’est pas encore stabilisee, dixit son auteure - qui garde aussi le nommage original de la dist pour des raisons de compatibilite dans le but de permettre la transition la suite reprendra apres la finalisation des travaux de (...)

• Revision 15b5a6a2c7 : Flexible support for various pattern searches Adds a few pattern searches to ac

  22 juillet 2013, par Deb Mukherjee

  Changed Paths :
   Modify /vp9/encoder/vp9_mbgraph.c

  
   Modify /vp9/encoder/vp9_mcomp.c

  
   Modify /vp9/encoder/vp9_mcomp.h

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_temporal_filter.c

  
  
  Flexible support for various pattern searches

  Adds a few pattern searches to achieve various tradeoffs
  between motion estimation complexity and performance.
  The search framework is unified across these searches so that a
  common pattern search function is used for all. Besides it will
  be easier to experiment with various patterns or combinations
  thereof at different scales in the future.

  The new pattern search is multi-scale and is capable of using
  different patterns at different scales.

  The new hex search uses 8 points at the smallest scale
  and 6 points at other scales.
  Two other pattern searches - big-diamond and square are
  also added. Big diamond uses 4 points at the smallest scale and
  8 points in diamond shape at the larger scales.
  Square is very similar conceptually to the default n-step search
  but is somewhat faster since it keeps only one survivor across
  all scales.

  Psnr/speed-up results on derf300 :

  hex : -1.6% psnr%, 6-8% speed-up
  big-diamond : -0.96% psnr, 4-5% speedup
  square : -0.93% psnr, 4-5% speedup

  Change-Id : I02a7ef5193f762601e0994e2c99399a3535a43d2

• FFmpeg not working

  22 juillet 2013, par matthew

  I own the website www.goploom.com which similarly to youtube, allows users to upload and view videos. The videos that are uploaded are converted to the mp4 format for compatibility with our site's html5 video player. My problem is that while FFmpeg successfully generates video thumbnails from the uploaded video and stores the image in the proper directory, The video conversion aspect of my code does not produce any output. I have tweaked the code for a couple hours, and I have not been able to resolve this issue, however, I am told that I can perform video conversion with html, php, and ffmpeg.

  My path to ffmpeg is correct as the thumbnail generation works perfectly.

  **Information collected from the uploaded video upon upload.
  $name = $_FILES['video']['name'] ;
  $title = $_POST['videotitle'] ;
  $type = explode('.', $name) ;
  $type = end($type) ;
  $size = $_FILES['video']['size'] ;
  $random_name = rand() ;
  $tmp = $_FILES['video']['tmp_name'] ;

                  if($type != 'mp4' && $type != 'MP4' && $type != 'flv' && $type != 'FLV' && $type != 'mov' && $type != 'MOV'){
  
                      $message = "Video Format Not Supported<br />";
  
                  } else {
  
              $username_query = mysql_query("SELECT `username` FROM `users` WHERE `user_id` = $session_user_id");
  
                      $username = mysql_fetch_assoc($username_query); 
  
                      $username = $username[&#39;username&#39;];

  **Thumbnail generation that works perfectly.
  $ffmpeg = "/usr/local/bin/ffmpeg" ;
  $videoFile = $_FILES['video']['tmp_name'] ;
  $imageFile = "uploads/".$username."/thumbnails/".$random_name.".jpg" ;
  $size = "160x90" ;
  $getFromSecond = 5 ;
  $cmd = "$ffmpeg -i $videoFile -an -ss $getFromSecond -s $size $imageFile" ;
  if(!shell_exec($cmd))
  echo "Thumbnail Created !
  " ;
  else
  echo "Error Creating Thumbnail !" ;
  

  **Moves the uploaded file to its permanent directory for video conversion.
  $newFileLocation = "uploads/".$username."/temp".$random_name.".".$type ;
  move_uploaded_file($tmp, $newFileLocation) ;

  *Video Conversion code.
  $outputFile = "uploads/".$username."/".$random_name.".mp4" ;
  $databaseStoredVideoUrl = "uploads/".$username."/".$random_name.".mp4" ;
  $video_cmd = "$ffmpeg -i $newFileLocation $outputFile" ;
  echo $video_cmd ;
  if(!shell_exec($video_cmd))
  echo "Video Converted !
  " ;
  else
  echo "Error Creating Thumbnail !" ;
  

  **Properly stores the output src link in the database, but the video cannot be viewed because it does not exist.
  // Video Storage into database under correct username and user directory
  mysql_query("INSERT INTO videos VALUES('$session_user_id' ,'', '$name', '$outputFile', '$title', '', '$imageFile')") ;
  $message = "Video Upload Successful.
  " ;

  Any help or insight would be brilliant.
  Thanks.

  **EDIT : Fixed by using the following line.
  $video_cmd = "$ffmpeg -i $newFileLocation -vcodec libx264 -vpre normal -acodec libfaac $outputFile" ;

  and then inputting $video_cmd into shell_exec