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• Save continuous RTSP stream to 5-10 minute long mp4 files

  20 janvier 2017, par Ruslan Sharipov

  How can I keep the flow (protocol rtsp, codec h264) in file (container mp4) ? That is, on inputting an endless stream (with CCTV camera), and the output files in mp4 format size of 5-10 minutes of recording time.

  OS : debian, ubuntu
  Software : vlc, ffmpeg (avconv)

  Currently this scheme is used :

  cvlc rtsp://admin:admin@10.1.1.1:554/ch1-s1 --sout=file/ts:stream.ts
  
  ffmpeg -i stream.ts -vcodec copy -f mp4 stream.mp4

  But it can not record video continuously (between restarts vlc loses about 10 seconds of live video).

• FFMpeg doesn't convert the video, just creates a thumb... It was working now not ?

  20 septembre 2011, par Matt Reid

  Theres a site im making for someone where it uses FFMpeg to convert the files to MP4's... I set it up and got the converter working... but now a week or so later ive came to use it and it doesn't convert the video, it runs the create thumbnail exec() but the video exec() doesn't run. It returns a 1 status like its gone through but there is no converted file and the browser quickly processes the convert file rather than lagging for a few seconds like it did when it was working...

  Any ideas ?

   <?php
  
  
  
   //Thumbnail VARS
  
   $tn_size = '480x360';
  
   $tn_interval = 3;
  
   $tn_type = 'mjpeg';
  
  
  
   //Video VARS
  
   $vi_size = '480x360';
  
   $vi_fileto = 'mp4';
  
  
  
   //Default Setup
  
   $id = $_GET['ListingID'];
  
   $ext = $_GET['Ext'];
  
   $temp_url = '/var/www/files/videos-tmp/'.$id.".".$ext;
  
   $new_url = '/var/www/files/videos/'.$id.".mp4";
  
   $new_url_thumb = '/var/www/files/videos-thumb/'.$id.".jpg";
  
  
  
   //echo $new_url."<br />".$id." ".$ext. " " .$temp_url;
  
  
  
   //Do
  
   if(file_exists($temp_url)) {
  
  @unlink($new_url);
  
  //echo "/usr/local/bin/ffmpeg -i {$temp_url} -f {$vi_fileto} -r 25 -ar 22050 -ab 48000      -ac 1 -s {$vi_size} {$new_url}";
  
  exec("/usr/local/bin/ffmpeg -i {$temp_url} -deinterlace -an -ss $tn_interval -f {$tn_type} -t 1 -r 1 -y -s $tn_size &#39;{$new_url_thumb}&#39;"); //make thumbnai
  
  exec("/usr/local/bin/ffmpeg -i {$temp_url} -f {$vi_fileto} -r 25 -ar 22050 -ab 48000 -ac 1 -s {$vi_size} {$new_url}",$output,$status); //convert video
  
  
  
  //@unlink($temp_url);
  
  if(isset($_GET[&#39;UsrOvr&#39;])) { } else {
  
  echo "<b>Convert Complete</b>";
  
  echo "<br /><br />Return to listings <a href="http://stackoverflow.com/feeds/tag/&#39;admin_listings.php&#39;">page</a>.";
  
  exit;
  
  }
  
   } else {
  
  die("The video selected does not exist!");
  
   }
  
   ?>

• Tell a java servlet when to return from an external command line call

  20 septembre 2011, par Morgan

  I have a java servlet api, that when requested, starts a live conversion of a video file using ffmpeg and pipes it to mediastreamsegmenter to segment it for http live streaming. What I want is for the java servlet to return the url of the index file as soon as it has been generated (after the 4th transport stream file is written) so the user can start watching the video without waiting for it to fully finish converting.

  How I was thinking of achieving this was to pass a command into the -file-complete-command argument of mediastreamsegmenter, and have it call some sort of a command that could tell the java servlet to return its response if the last file completed was the index file.

  Another idea I had was to just segment the first 30 seconds or so of the video, and then return the response, and add the remainder of the video into some sort of a background task in the servlet. I'm not sure how this would be done though. Could I create a separate thread to do this conversion that will continue to run after the servlet returns ? I'm sure there must be a better way of doing this. Any thoughts would be appreciated.