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• 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) ?

• FFMPEG segment records a minute worth of data but metadata shows 0.1s length video

  1er février 2018, par Soft Strategy

  I’m recording a stream from a Live555 restream of a rtsp camera. I record in chunks of one minute videos. This is the setup :

  RTSP Camera -> Live555 Server -> Recorder

  Without the Live555 restreamer server I always record the rtsp camera stream with ffmpeg with no issues. This is the command :

  ffmpeg -rtsp_transport tcp -y -i rtsp://IPcamera/url/to/video -c copy -f segment -segment_time 60 -reset_timestamps 1 -segment_atclocktime 1 -strftime 1 /video/%Y-%m-%d_%H-%M-%Stest.ts

  I record in a ts container to mitigate framerate inaccuracies.

  If I capture the proxy stream after few ours with no errors, something happens the stream starts to record files with the usual space on disk (around 5-10MB each) but when I check the metadata, the duration is 0.16 seconds. If you watch the video, it’s of course too fast but shows the clock hard coded in the image that runs through the whole minute, so the data is there.

  The command I use with the restream, just an input change.

  ffmpeg -rtsp_transport tcp -y -i rtsp://IPstreamServer/proxyStream-1 -c copy -f segment -segment_time 60 -reset_timestamps 1 -segment_atclocktime 1 -strftime 1 /video/%Y-%m-%d_%H-%M-%Stest.ts

  It’s like ffmpeg is messing up the metadata. With the tcp setting there are no packets lost.

  What could be the problem ?

  Recording on Debian 8.8, ffmpeg version 3.2.5-1 bpo8+1.

  EDIT : I’ve found that some guy had problem receiving metadata from the server, could it be the problem ? http://lists.live555.com/pipermail/live-devel/2013-May/017033.html

• Ffmpeg converting to mp4 from mkv[mpeg@ 0x7f9c19800000] start time for stream 0 is not set in estimate_timings_from_pts

  6 février 2018, par croakouttatune

  I recently converted a number of anime episodes from MKV to MP4 to burn and watch on my SamsungBRPlayer, however during the process I wasn’t able to convert the subtitle stream #0:2 through ffmpeg from .ssa to .srt thru their respective codecs (SSA to MOV_TEXT, can also be SUBRIP). I eventually decided to extract the SSA files and encode them as .srt... one for each episode. I converted these to .srt and plugged them back into the 8 episodes.

  for i in *.mkv;do ffmpeg -i "$i" -i *.srt -c copy -c:s mov_text -c:v h264_videotoolbox -c:a aac -b:a 128k -target ntsc-dvd -y "yfolder/${i%.mkv*}.mp4"; done

  After testing the compatibility of these files I know that this video codec will work, and the BluRay player I use also recognizes the subtitle files ; However , when looking back at the streams #0:0 which is where the subtitles are stored gives me "[mpeg @ 0x7f8621000000] start time for stream 0 is not set in estimate_timings_from_pts." This stream #0:O is now a data stream...0:1 video 0:2 being audio ...
  One of the reasons I thought that I could have received this message is from an Attachment from the original MKV files in the #0:3 stream, which because it wasn’t anything more than metadata I ignored.
  Another would probably be from the code mentioned above importing multiple .srt files into each of the new .mp4 files. I did find a solution however I’m not able to utilize the coding.

  $ for video in *.mkv 
  
  do 
  
  base=${video%.mkv} ffmpeg -i $base.mkv -vf subtitles=$base.srt  
  
  $base-out.mkv ; done

  I couldn’t seem to get it to work. My files were as follows :

  [AnimeGT] Hansom Gold - 001 [720p] [suitup].mp4

  [AnimeGT] Hansom Gold - 002 [720p] [suitup].mp4

  [AnimeGT] Hansom Gold - 003 [720p] [suitup].mp4

  [AnimeGT] Hansom Gold - 004 [720p] [suitup].mp4

  [AnimeGT] Hansom Gold - 005 [720p] [suitup].mp4

  [AnimeGT] Hansom Gold - 006 [720p] [suitup].mp4

  [AnimeGT] Hansom Gold - 007 [720p] [suitup].mp4

  [AnimeGT] Hansom Gold - 008 [720p] [suitup].mp4

  So the titles are obviously fake but whatever. What I need to know is how to use the ${I%.*}.mp4 and ${h%.*}.srt to represent both the base and the video variables in the coding I failed at above.
  While keeping the data stream from each file.
  if that’s the problem. Some help would be nice.

  [mpeg @ 0x7f9c19800000] start time for stream 0 is not set in estimate_timings_from_pts

  I need to know how to deal with this.