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• Subtitles won't show on video after burning [closed]

  9 octobre 2023, par dra

  I'm trying to burn subtitles into a video using ffmpeg js and ffmpeg wasm in my NextJS app.
the issue is, after running the subtitles just won't show.
my code is as follows

  


  await ffmpeg.exec([
    '-i',
    `${fileName}`,
    '-vf',
    "subtitles=subtitles.srt:force_style='Fontname=Helvetica,PrimaryColour=&HFF00'",
    `${fileName}_final.mp4`,
])


  


  from the terminal it works as expected

  


  tried to run it on .srt and .ass files too, with and without font specification for both file types

  


• FFMPEG show encoding progress

  18 janvier 2016, par Mick Jack

  I am using ffmpeg to convert a video file large files take a long time to get encode. i will like to show a progress bar with a percentage/time remaining

  i saw and tried this example example but progress bar is not showing

  FFMPEG script and autorefresh both in upload.php

      <?php
  
  shell_exec("C:\\ffmpeg\\bin\\ffmpeg.exe -y -i ".$target_file." -c:v libx264 -s:v 854x480 -c:a copy \"{$newFileName}\" > logfile.txt 2>&1");
  
  
  
           ?>
  
  
  
          <code class="echappe-js">&lt;script src=&quot;https://code.jquery.com/jquery-2.1.1.min.js&quot; type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
          
  &lt;script&gt;<br />
  
          $(document).ready(function(){<br />
  
          setInterval(function(){<br />
  
          $(&quot;#screen&quot;).load('progress.php')<br />
  
          }, 10000);<br />
  
          });<br />
  
          &lt;/script&gt;
  
  

  Progress.php

  <?php
  
  
  
  $content = @file_get_contents('logfile.txt');
  
  
  
              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);
  
  
  
              echo "Duration: " . $duration . "<br />";
  
              echo "Current Time: " . $time . "<br />";
  
              echo "Progress: " . $progress . "%";
  
  
  
  }
  
  
  
  ?>

  ffmpeg

   shell_exec("C:\\ffmpeg\\bin\\ffmpeg.exe -y -i ".$target_file." -c:v libx264 -s:v 854x480 -c:a copy \"{$newFileName}\" > logfile.txt 2>&1");

• Show commands used thru ffmpeg when video was encoded ?

  25 juillet 2023, par John

  I have some videos I am trying to remember what CRF value I used to encode them. I thought thru mediainfo I've seen screen shots from others where there is a value that shows the commands used to make the encode but not seeing that on mine. Is there a way to see this ?