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• I've download ffmpeg source code,but I don't know how to use it on anroid

  23 octobre 2013, par Sravanthi Pasaragonda

  I've download ffmpeg source code,but I don't know how to use it on anroid.I need to remove audio from vedio file and i need to add other audio to vedio.This is my Task .I am using ubutu 10.04 ,And i have installed NDK-r9,ffmpeg and yasm 1-2.0 in my system.
  please any sample process to how to start ffmpeg example,i have downloaded lot of example from GITHUB Like

      https://github.com/appunite/AndroidFFmpeg
  
      http://www.roman10.net/how-to-build-android-applications-based-on-ffmpeg-by-an-example/
  
      https://github.com/mconf/android-ffmpeg
  
  
  
  
  
  
  
  But i dont no how to complie all projects using ffmpeg.

  Please give me step by step process for any ffmpeg example in ubutu.

  Thanks

• FFmpeg code not working on http url for thumbnail extraction

  1er août 2014, par user2240379

  I am trying to extract thumbnail from sharepoint 2013 video library. I found a link which can extract using ffmpeg. this is the link :
  [How can I save first frame of a video as image ?

  filename = "http://siteurl/" + items["FileRef"].ToString();

  When i replaced the input file with sharepoint site url and video name then it does not produce any thumbnail. I also gives error on

  ffmpeg.Start();
  
          ffmpeg.WaitForExit();
  
          ffmpeg.Close()

  I would like to understand how make it work for http url.
  If it is not possible to use url in ffmpeg can anyone suggest another method to achieve thumbnail.(as i want the thumbnail to be set automatically using 1st frame from of video if it not set manually)

• How to convert this php code to javascript

  5 octobre 2019, par Salman

  I have this php code to check the progress percentage of a ffmpeg video conversion. Basically ffmpeg command generates a log file named "output.txt" from where i can estimate the percentage with the help of this code. I want to create a javascript code where i can directly estimate the percentage from the log file.

  $content = @file_get_contents('output.txt');
  
  
  
  if ($content) {
  
      //get duration of source
  
      preg_match("/Duration: (.*?), start:/", $content, $matches);
  
  
  
      $raw_duration = $matches[1];
  
  
  
      //raw_duration is in 00:00:00.00 format. This converts it to seconds.
  
      $array_reverse = array_reverse(explode(":", $raw_duration));
  
      $duration      = floatval($array_reverse[0]);
  
      if (!empty($array_reverse[1]))
  
          $duration += intval($array_reverse[1]) * 60;
  
      if (!empty($array_reverse[2]))
  
          $duration += intval($array_reverse[2]) * 60 * 60;
  
  
  
      //get the time in the file that is already encoded
  
      preg_match_all("/time=(.*?) bitrate/", $content, $matches);
  
  
  
      $raw_time = array_pop($matches);
  
  
  
      //this is needed if there is more than one match
  
      if (is_array($raw_time)) {
  
          $raw_time = array_pop($raw_time);
  
      }
  
  
  
      //raw_time is in 00:00:00.00 format. This converts it to seconds.
  
      $array_reverse = array_reverse(explode(":", $raw_time));
  
      $time          = floatval($array_reverse[0]);
  
      if (!empty($array_reverse[1]))
  
          $time += intval($array_reverse[1]) * 60;
  
      if (!empty($array_reverse[2]))
  
          $time += intval($array_reverse[2]) * 60 * 60;
  
  
  
      //calculate the progress
  
      $progress = round(($time / $duration) * 100);
  
  
  
      echo $duration;
  
      echo $time;
  
      echo $progress;
  
  }