Recherche avancée

Sur d’autres sites (3475)

• AsyncTask publishProgress() does not update progress ffmpeg android

  7 février 2014, par jay

  I am using ffmpeg commands for processing media files.In doInBackground() method i have started the process and every time i get the duration , time values and grabbing progress using time and duration and send progress to publishProgress(progress).When i tested on google nexus(android 4.4 kitkat) it is updating progress dialog correctly but this won't happen in below android 4.4 devices.It is updating with an eye blink of time after completion of the process.
  Here is my code :

  protected String doInBackground(String... params)  {
  
              // TODO Auto-generated method stub  
  
              try {
  
                  proc = mProcess.start();
  
              } catch (IOException e) {
  
                  // TODO Auto-generated catch block
  
                  e.printStackTrace();
  
              }
  
              processDuration(proc.getErrorStream());
  
  
  
              // Wait for process to exit
  
              int exitCode = 1; // Assume error
  
              try {
  
                  exitCode = proc.waitFor();
  
              } catch (InterruptedException e) {
  
                  Log.e(TAG, "Process interrupted!", e);
  
              }
  
              onExit(exitCode);           
  
              return null;            
  
          }
  
  
  
          private void onExit(int exitCode) {
  
              // TODO Auto-generated method stub
  
              Log.i("exit code >>>>>>>>..", ""+exitCode);
  
          }
  
  
  
          private void processDuration(InputStream errorStream) {
  
              // TODO Auto-generated method stub
  
              Scanner sc = new Scanner(errorStream);          
  
              // Find duration
  
              Pattern durPattern = Pattern.compile("(?<=Duration: )[^,]*");
  
              String dur = sc.findWithinHorizon(durPattern, 0);
  
              if (dur==null) throw new RuntimeException("Could not parse    duration.");          
  
              String[] hms = dur.split(":");
  
              try{
  
                  totalSecs= Integer.parseInt(hms[0]) * 3600 + Integer.parseInt(hms[1]) *  60 + Double.parseDouble(hms[2]);
  
                  Log.i(" progress>>>>>>>>>>>>>",""+totalSecs);
  
              }catch(NumberFormatException e){
  
  
  
              }
  
              Pattern timePattern = Pattern.compile("(?<=time=)[\\d:.]*");
  
              String match= sc.findWithinHorizon(timePattern, 0);             
  
              while (null != (match = sc.findWithinHorizon(timePattern, 0))) {
  
                  hms = match.split(":"); 
  
                  try{
  
                      processedSecs= Integer.parseInt(hms[0]) * 3600 + Integer.parseInt(hms[1]) *  60 + Double.parseDouble(hms[2]);
  
                  }catch(NumberFormatException e){
  
  
  
                  }
  
                  progress = processedSecs / totalSecs;   
  
                  final int finalProgress=(int)(progress*100);
  
                  try {
  
  
  
                      publishProgress(""+finalProgress);
  
  
  
                      Thread.sleep(1000);
  
                  } catch (InterruptedException e) {
  
                      // TODO Auto-generated catch block
  
                      e.printStackTrace();
  
                  }
  
  
  
              }
  
              publishProgress(""+100);
  
          }
  
  
  
          protected void onPostExecute(String  result) {
  
              super.onPostExecute(result);                
  
              mProgressDialog.dismiss();
  
  
  
          }
  
  
  
          protected void onPreExecute() {
  
              super.onPreExecute();
  
              showDialog(DIALOG_DOWNLOAD_PROGRESS);               
  
          }
  
  
  
          protected void onProgressUpdate(String... progress) {
  
              mProgressDialog.setProgress(Integer.parseInt(progress[0])); 
  
              super.onProgressUpdate(progress);
  
          }
  
  
  
          public Dialog showDialog(int id) {
  
          // TODO Auto-generated method stub
  
          switch (id) {
  
          case DIALOG_DOWNLOAD_PROGRESS:
  
              mProgressDialog = new ProgressDialog(context);
  
              mProgressDialog.setMessage(loading process..");
  
              mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
  
              mProgressDialog.setCancelable(false);
  
              mProgressDialog.setMax(100);
  
              mProgressDialog.setCanceledOnTouchOutside(false);
  
              mProgressDialog.show();
  
              return mProgressDialog;
  
          default:
  
              return null;
  
          }
  
      }
  
      }

  Thanks for Your Help..
  Please help me out this problem..........

• fluent-ffmpeg mergeToFile always 128kb audio bit-rate no matter what

  12 septembre 2020, par Martin

  I am trying to use fluent-ffmpeg with my electron app to concatenate multiple audio files together with an image in a video. So if i have three files :

  


  song1.mp3 1:00
song2.mp3 0:30
song3.mp3 2:00
front.jpg

  


  I could create output.mp4 which would be 3:30 seconds long, and play each file one after the other in order. With front.jpg set as the background image.

  


  I am trying to create the concatenated audio file first for this video, then I can just render a vid with two inputs ; image and the 3:30second long concatenated audio file. But I'm having difficulty getting my electron app to wait for the ffmpeg job to run and complete.

  


  I know how to do all of these ffmpeg jobs on the command-line, but I've been following this guide for how to package ffmpeg into an electron app that can run on mac/win10/linux environments. I'm developing it on win10 right now.
gur.com/LtykP.png

  


  I have a button :
<button>FULLALBUM</button>

  


  that when I click runs the fullAlbum() function that calls combineMp3FilesOrig to run the actual ffmpeg job :

  


  async function fullAlbum(uploadName) {
    //document.getElementById("buttonId").disabled = true;

    //get table
    var table = $(`#upload_${uploadNumber}_table`).DataTable()
    //get all selected rows
    var selectedRows = table.rows( '.selected' ).data()
    //get outputFile location
    var path = require('path');
    var outputDir = path.dirname(selectedRows[0].audioFilepath)
    //create outputfile
    var timestamp = new Date().getUTCMilliseconds();
    let outputFilepath = `${outputDir}/output-${timestamp}.mp3` 

    
    console.log('fullAlbum() button pressed: ', timestamp)

    await combineMp3FilesOrig(selectedRows, outputFilepath, '320k', timestamp);
    //document.getElementById("buttonId").disabled = false;

    console.log(`fullAlbum() /output-${timestamp}.mp3 should be created now`)
}

function combineMp3FilesOrig(selectedRows, outputFilepath, bitrate, timestamp) {
    console.log(`combineMp3FilesOrig(): ${outputFilepath}`)
    
    //begin get ffmpeg info
    const ffmpeg = require('fluent-ffmpeg');
    //Get the paths to the packaged versions of the binaries we want to use
    const ffmpegPath = require('ffmpeg-static').replace('app.asar','app.asar.unpacked');
    const ffprobePath = require('ffprobe-static').path.replace('app.asar','app.asar.unpacked');
    //tell the ffmpeg package where it can find the needed binaries.
    ffmpeg.setFfmpegPath(ffmpegPath);
    ffmpeg.setFfprobePath(ffprobePath);
    //end set ffmpeg info

    //create ffmpeg command
    console.log(`combineMp3FilesOrig(): create command`)
    const command = ffmpeg();
    //set command inputs
    command.input('C:\\Users\\marti\\Documents\\martinradio\\uploads\\CharlyBoyUTurn\\5. Akula (Club Mix).flac')
    command.input('C:\\Users\\marti\\Documents\\martinradio\\uploads\\CharlyBoyUTurn\\4. Civilian Barracks.flac')

    return new Promise((resolve, reject) => {
        console.log(`combineMp3FilesOrig(): command status logging`)
        command.on('progress', function(progress) {
            console.info(`Processing : ${progress.percent} % done`);
        })
        .on('codecData', function(data) {
            console.log('codecData=',data);
        })
        .on('end', function() {
            console.log('file has been converted succesfully; resolve() promise');
            resolve();
        })
        .on('error', function(err) {
            console.log('an error happened: ' + err.message, ', reject()');
            reject(err);
        })
        console.log(`combineMp3FilesOrig(): add audio bitrate to command`)
        command.audioBitrate(bitrate)
        console.log(`combineMp3FilesOrig(): tell command to merge inputs to single file`)
        command.mergeToFile(outputFilepath);
        console.log(`combineMp3FilesOrig(): end of promise`)
    });
    console.log(`combineMp3FilesOrig(): end of function`)
}


  


  When I click my button once, my console.logs show the promise is entered, the command is created, but the function just ends without waiting for a resolve() ;
Waiting a couple minutes doesnt change anything.

  


  

  


  If I press the button again :

  


  

  


  A new command gets created, reaches the end of the promise, but this time actually starts, and triggers the previous command to start. Both jobs then run and their files are rendered at the correct length (12:08) and the correct quality (320k)

  


  Is there something with my promise I need to fix involving async functions and promises in an electron app ? I tried editing my ffmpeg command to include

  


  command.run()

  


  At the end of my promise to ensure it gets triggered ; but that leads to an err in console saying Uncaught (in promise) Error: No output specified because apparently in fluent-ffmpeg command.mergeToFile(outputFilepath); isnt good enough and I need to include .output(outputFilepath) as well. If I change command.run() to command.output(outputFilepath).run(), when i click my button, the ffmpeg job gets triggered and rendered perfectly fine. EXCEPT THAT THE FILE IS ALWAYS 128kbps

  


  So I'm trying to figure out why my included code block, my ffmpeg command doesn't run the first time when its created.

  


• avconv/ffmpeg command to encode nice full hd webm for chrome

  18 mars 2016, par xavier.seignard

  People from the artistic direction gave me big .mov and .mp4 that I need to put on a web app, but so far they are so huge that decoding/rendering is kinda bad on chrome (this is a chrome only experience since it will run on electron at the end).

  I’d like to re-encode them in .webm since it seems to have the best support in chrome.

  But I’m kinda lost on how to re-encode them without significative visual quality lost.

  For now I use (taken from https://trac.ffmpeg.org/wiki/Encode/VP8)

  ffmpeg -i myVid.mp4 -c:v libvpx -crf 8 -b:v 2M -c:a libvorbis myVid.webm

  So, does anyone have a nice avconv/ffmpeg command that will produce nice and easy to render .webm ?

  Regards.