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• FFMPEG script to cut audio at exact time intervals [duplicate]

  15 janvier 2021, par BitBit

  I have an audio file which is about 1 hour 10 minutes long, and I want to cut the audio into several parts which are exactly time 15 mins apart. Can someone please help me with a ffmpeg script that cuts audio at every 15th minute(i.e. at 15:00,30:00,45:00,60:00) and hence make my 1 hour 10 minutes audio clip into 5 cut clips of 15 minutes length(the last clip being only 10 minutes due to the video length)

  


• 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");

• Fast video compression like Whatsapp

  11 juin 2021, par Douglas Anunciação

  I need to speed up video compression in my Android app. I'm using FFMPEG and it takes 3 minutes to compress 80MB video. Does anyone knows a better solution ?

  



  The command I'm using is :

  



  /data/data/com.moymer/app_bin/ffmpeg -y -i /storage/emulated/0/DCIM/Camera/VID_20150803_164811363.mp4 -s 640x352 -r 25 -vcodec mpeg4 -ac 1 -preset ultrafast -strict -2 /storage/emulated/0/DCIM/Camera/compressed_video.mp4


  



  I'm running this command using FFMPEG for Android from this github repo : https://github.com/guardianproject/android-ffmpeg-java

  



  The code to use FFMPEG in my project is inside an AsyncTask and is copied below :

  



  @Override
protected Object doInBackground(Object... params) {

    ItemRoloDeCamera compressedVideo = new ItemRoloDeCamera();

    File videoInputFile = new File(video.getSdcardPath());

    File videoFolderFile = videoInputFile.getParentFile();

    File videoOutputFile = new File(videoFolderFile, "video_comprimido_moymer.mp4");

    if (videoFolderFile.exists())
        android.util.Log.e("COMPRESS VIDEO UTILS", "video folder exist");
    else
        android.util.Log.e("COMPRESS VIDEO UTILS", "video folder DON'T exist");

    if (videoInputFile.exists())
        android.util.Log.e("COMPRESS VIDEO UTILS", "video input file exist");
    else
        android.util.Log.e("COMPRESS VIDEO UTILS", "video input file DON'T exist");

    if (videoOutputFile.exists())
        android.util.Log.e("COMPRESS VIDEO UTILS", "video output file exist");
    else
        android.util.Log.e("COMPRESS VIDEO UTILS", "video output file DON'T exist");

    FfmpegController ffmpegController;

    try {

        ffmpegController = new FfmpegController(context, videoFolderFile);

        Clip clipIn = new Clip(videoInputFile.getAbsolutePath());

        ffmpegController.getInfo(clipIn, new ShellUtils.ShellCallback() {
            @Override
            public void shellOut(String shellLine) {
                videoInfo.add(shellLine);
            }

            @Override
            public void processComplete(int exitValue) {
                videoInfo.add(String.valueOf(exitValue));
            }
        });

        int rotate = getRotateMetadata();

        Clip clipOut = new Clip(videoOutputFile.getAbsolutePath());
        clipOut.videoFps = "24";
        clipOut.videoBitrate = 512;
        clipOut.audioChannels = 1;
        clipOut.width = 640;
        clipOut.height = 352;

        if (rotate == 90)
            clipOut.videoFilter = "transpose=1";
        else if (rotate == 180)
            clipOut.videoFilter = "transpose=1,transpose=1";
        else if (rotate == 270)
            clipOut.videoFilter = "transpose=1,transpose=1,transpose=1";

        millisDuration = getVideoDuration(videoInputFile.getAbsolutePath());

        float secondsDuration = millisDuration / 1000f;

        clipOut.duration = secondsDuration;

        ffmpegController.processVideo(clipIn, clipOut, true, new ShellUtils.ShellCallback() {
            @Override
            public void shellOut(String shellLine) {

                android.util.Log.e("COMPRESS VIDEO UTILS", "shellOut - " + shellLine);

                float percentage = getTimeMetadata(shellLine);

                if (percentage >= 0f)
                    publishProgress(percentage);

            }

            @Override
            public void processComplete(int exitValue) {
                android.util.Log.e("COMPRESS VIDEO UTILS", "proccess complete - " + exitValue);
            }
        });


    } catch (IOException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {

        if (videoOutputFile.exists()) {

            android.util.Log.e("COMPRESS VIDEO UTILS", "finished ffmpeg ---> video output file exist");

            compressedVideo.setSdcardPath(videoOutputFile.getAbsolutePath());

            return compressedVideo;

        } else
            android.util.Log.e("COMPRESS VIDEO UTILS", "finished ffmpeg ---> video output file DON'T exist");

    }

    return compressedVideo;

}

private float getTimeMetadata(String shellLine) {

    float percentage = -1;

    if (shellLine.contains("time=")) {

        String[] timeLine = shellLine.split("=");

        String time = timeLine[5];
        time = time.replace("bitrate", "");
        time = time.trim();

    //            String source = "00:10:17";
        String[] tokens = time.split(":");
        int secondsToMs = (int) (Float.parseFloat(tokens[2]) * 1000);
        int minutesToMs = Integer.parseInt(tokens[1]) * 60000;
        int hoursToMs = Integer.parseInt(tokens[0]) * 3600000;
        long timeInMillis = secondsToMs + minutesToMs + hoursToMs;

        percentage = (timeInMillis * 100.0f) / millisDuration;

    }

    return percentage;

}

private int getRotateMetadata() {

    int rotate = 0;

    String durationString = "";

    for (String shellLine : videoInfo) {

        if (shellLine.contains("rotate")) {

            //rotate          : 270

            String[] rotateLine = shellLine.split(":");

            rotate = Integer.parseInt(rotateLine[1].trim());

        }

    }

    return rotate;

}

public static long getVideoDuration(String videoPath) {

    MediaMetadataRetriever retriever = new MediaMetadataRetriever();

    retriever.setDataSource(videoPath);

    String time = retriever
            .extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);

    long timeInmillisec = Long.parseLong(time);

    return timeInmillisec;

}


  



  The only change I made in the processVideo method was to add the following lines when building the commmand :

  



  cmd.add("-preset");
cmd.add("ultrafast");