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• avcodec/opus/parser : set sample rate

  1er janvier, par James Almer

  avcodec/opus/parser : set sample rate
  Ensures it's set on scenarios where a parser is requested but no decoder is
  
  present.
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/opus/parser.c

• avcodec/wmalosslessdec : silence a sample request

  1er mai 2016, par Christophe Gisquet

  avcodec/wmalosslessdec : silence a sample request
  16bits samples with CDLMS orders of 8 are currently unsupported, but have never
  
  been encountered before.
  However, 8 seems to be the most frequent, if not the only order used for 24bits.
  
  In that case, the dsp functions are fine with handling order that are multiples
  
  of 8, so silence the warning.
  Signed-off-by : Paul B Mahol <onemda@gmail.com>
  

  • [DH] libavcodec/wmalosslessdec.c

• ffmpeg not returning duration, cant play video until complete. Stream images 2 video via PHP

  17 février 2014, par John J

  I am real struggling with ffmpeg. I am trying to convert images to video, I have an ip camera which I am recording from. The recordings are mjpegs 1 frame per image.

  I am trying to create a script in php so I can recreate a video from date to date, this requires inputting the images via image2pipe and then creating the video.

  The trouble is, ffmpeg does return the duration and start stats, so I have no way of working out when the video is done or what percentage is done. The video won't play until its finished, and its not a very good UE.

  Any ideas of how I can resolve this, the video format can be anything I am open to suggestions.

  PHP :

  //Shell command
  
  exec('cat /image/dir/*.jpg | ffmpeg -y -c:v mjpeg -f image2pipe -r 10 -i - -c:v libx264 -pix_fmt yuv420p -movflags +faststart myvids/vidname.mp4 1>vidname.txt 2>&1')
  
  
  
  //This is loaded via javascript when the video is loaded (which is failing due to stats being wrong
  
  $video_play = "<video width="\&quot;320\&quot;" height="\&quot;240\&quot;" src="\&quot;myvids/vidname.mp4\&quot;" type="\&quot;video/mp4\&quot;\" controls="\&quot;controls\&quot;" preload="\&quot;none\&quot;"></video>";

  Javascript :

  //Javascript to create the loop until video is loaded
  
  <code class="echappe-js">&lt;script&gt;<br />
  
             $(document).ready(function() {<br />
  
                  var loader = $(&quot;#clip_load&quot;).percentageLoader();<br />
  
                  $.ajaxSetup({ cache: false }); // This part addresses an IE bug. without it, IE will only load the first number and will never refresh<br />
  
                  var interval = setInterval(updateProgress,1000);<br />
  
                  function updateProgress(){ $.get( &quot;&amp;#39;.base_url().&amp;#39;video/getVideoCompile_Process?l=&amp;#39;.$vid_name.&amp;#39;-output.txt&amp;amp;t=per&quot;, function( data ) { if(data=&gt;\&amp;#39;100\&amp;#39;){ $(&quot;#clip_load&quot;).html(\&amp;#39;&amp;#39;.$video_play.&amp;#39;\&amp;#39;); clearInterval(interval); }else{loader.setProgress(data); } });                    }<br />
  
              });<br />
  
              &lt;/script&gt;
  
  

  PHP (page is called via javascript :

  //This is the script which returns the current percentage
  
  $logloc = $this->input->get('l');
  
  $content = @file_get_contents($logloc);
  
  
  
  if($content){
  
      //get duration of source
  
      preg_match("/Duration: (.*?), start:/", $content, $matches);
  
  
  
      $rawDuration = $matches[1];
  
  
  
      //rawDuration is in 00:00:00.00 format. This converts it to seconds.
  
      $ar = array_reverse(explode(":", $rawDuration));
  
      $duration = floatval($ar[0]);
  
      if (!empty($ar[1])) $duration += intval($ar[1]) * 60;
  
      if (!empty($ar[2])) $duration += intval($ar[2]) * 60 * 60;
  
  
  
      //get the time in the file that is already encoded
  
      preg_match_all("/time=(.*?) bitrate/", $content, $matches);
  
  
  
      $rawTime = array_pop($matches);
  
  
  
      //this is needed if there is more than one match
  
      if (is_array($rawTime)){$rawTime = array_pop($rawTime);}
  
  
  
      //rawTime is in 00:00:00.00 format. This converts it to seconds.
  
      $ar = array_reverse(explode(":", $rawTime));
  
      $time = floatval($ar[0]);
  
      if (!empty($ar[1])) $time += intval($ar[1]) * 60;
  
      if (!empty($ar[2])) $time += intval($ar[2]) * 60 * 60;
  
  
  
      //calculate the progress
  
      $progress = round(($time/$duration) * 100);
  
      if ($this->input->get('t')=='per'){
  
          echo $progress;
  
      }else{
  
              echo "Duration: " . $duration . "<br />";
  
              echo "Current Time: " . $time . "<br />";
  
      echo "Progress: " . $progress . "%";}
  
  }else{ echo "cannot locate";}

  Thanks