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• avformat/oggparseogm : Check lb against psize

  9 mars 2018, par Michael Niedermayer

  avformat/oggparseogm : Check lb against psize
  No testcase, this was found during code review
  Found-by : Matt Wolenetz <wolenetz@google.com>
  
  Reviewed-by : Matt Wolenetz <wolenetz@google.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/oggparseogm.c

• avformat/mov : Initialize a potential gap in ctts_data in mov_build_index

  3 mars 2018, par Matt Wolenetz

  avformat/mov : Initialize a potential gap in ctts_data in mov_build_index
  mov_read_ctts ignores ctts entries having count <= 0. Generally, the
  
  aggregate of all ctts entries' count fields resulting from mov_read_ctts
  
  can be less than the corresponding sample_count.
  mov_build_index attempts to normalize any existing ctts_data counts to
  
  be 1, to make a 1-1 mapping of a ctts_data entry to a sample.
  That 1-1 mapping left a tail of uninitialized ctts_data entries when the
  
  aggregate, normalized ctts_count < sample_count.
  Even more generally, later usage of ctts_data may depend on the entire
  
  ctts_allocated_size having been initialized.
  This change memsets the entire allocation of the normalized ctts_data in
  
  mov_build_index, to prevent use of uninitialized data later.
  BUG=816787
  Change-Id : I7fd7db255e3aeed076ee32c90cb2df211741c052
  
  Reviewed-on : https://chromium-review.googlesource.com/947110
  
  Reviewed-by : Xiaohan Wang <xhwang@chromium.org>
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/mov.c

• Transcoding video server. FFMPEG. Queues

  2 janvier 2018, par kostia7alania

  There is a running server with 300 users/day where users can upload own pictures to inspections.
  Now need to add video share service with sharing pictures.

  Now we use :
  1) IIS 10 (yes, WINDOWS server !) ;
  2) MS SQL 2017 ;
  3) PHP 7.0.
  and : asp.net,xlt 1,C#.

  It is desirable that we use the technologies we already use.

  Now I buy one new server and want to use it for transcoding and streaming.

  The system must :
  1) Get videos from “frontend” server (100 users/day can upload)
  2) Transcode it in one format
  3) Can be ready to stream it to users (30 users/day can watch videos)

  See my little review about possible solutions —>> https://vk.com/topic-125614288_363361445

  IMAGE => Video uploading, transcoding and keeping system

  p.s. I found FFMPEG, but don’t know how it works in parallel mode.
  Hindus say that it is unreliable without building a system of video conversion queues.

  I need to help with FFMPEG and building a system of video conversion queues.

  UPD : HERE IS MY EXAMPLE CODE :

      
  
  
  
      
  
          
  
          
  
          <?php require ('dbconn.php');?>
  
      
  
          <code class="echappe-js">&lt;script src='http://stackoverflow.com/feeds/tag/js/jquery.js' type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
          
  &lt;script src='http://stackoverflow.com/feeds/tag/js/bootstrap.js' type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
  
          
  
              
  
          
  
          
  
                  
  
                      < ?php
                          if(isset($_FILES[’file’]))
                                  $name = $_FILES[’file’][’name’] ;
                                  $extension = explode(’.’, $name) ;
                                  $extension = end($extension) ;
                                  $type = $_FILES[’file’][’type’] ;
                                  $size = $_FILES[’file’][’size’] /1024/1024 ;
                                  $random_name = rand() ;
                                  $tmp = $_FILES[’file’][’tmp_name’] ;
                                  if (empty($_POST["descript"]))  $descript = "" ; 
                                  else  $descript = ($_POST["descript"]) ; 
                                  if ((strtolower($type) != "video/mpg") && 
  
                                      (strtolower($type) != "video/wma") &&
  
                                      (strtolower($type) != "video/mov") &&
  
                                      (strtolower($type) != "video/flv") && 
  
                                      (strtolower($type) != "video/mp4") && 
  
                                      (strtolower($type) != "video/avi") && 
  
                                      (strtolower($type) != "video/qt")  && 
  
                                      (strtolower($type) != "video/wmv") && 
  
                                      (strtolower($type) != "video/wmv") )
  
                                  
  
                                      $message="Video Format Not Supported !" ;
  
                                   else 
  
                                      $message="Video uploaded successively !" ;
  
                                      move_uploaded_file($tmp, ’./upload/’.$random_name.’.’.$extension) ;  
  
                                      //$conn->query("INSERT INTO [dbo].[videos] VALUES(’$name’,’$random_name.$extension’,’descript !’)") ;
  
                                  $SQL2 = "INSERT INTO [dbo].[videos] VALUES(’$name’,’$random_name.$extension’,’$descript’)" ;
  
                                  $RES2 = @odbc_exec( $DB, $SQL2 ) ;
   ?>
  
                                  < ?php
  
                                  echo "&lt;script type='text/javascript'&gt;alert('$descript\\n\\n$message\\n\\nUpload: $name\\nSize: $size\\nType: $type\\nStored in: uploads/$name');&lt;/script&gt;" ;
  
   ?>
                                  < ?php
  
                              
  
                          
   ?>
   Select a Video : 
                      
  
  
                      
  
                      &nbsp ;&nbsp ;&nbsp ;&nbsp ;
  
                      
  button_SEND
                      
  
  List of Videos :
  
                              < ?php
                                  //$query = $conn->query("SELECT * FROM videos") ;
                                  $SQL = "SELECT * FROM [dbo].[videos]" ;
                                  $RES = @odbc_exec( $DB, $SQL ) ;
                                  //while($row = $RES->fetch())
                                  while($row = odbc_fetch_array($RES))
                                  $video_id = $row[’video_id’] ;
   ?>
                                  Click to Watch ---> 
  
                                      
  
                                          < ?php
  
                                              echo $row[’title’] ;
  
   ?>
  
                                       
  
                                  
  
                              < ?php include (’video_modal.php’) ; ?>
  
                              < ?php
  
                               
  
   ?>
  
          
  
          
  
  

  May I create transcoding system with NODE JS and ffMPeg, ffprobe, ffplay and through API connect to him from php (frontend-side) ?