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• Android : Pass video path to FFmpeg

  7 janvier 2016, par marian

  I have developed an app that play video from gallery. I would like to add watermark using FFmpeg command in the video selected. But I do not know how to pass the path to the FFmpeg command. I could not find proper tutorials or reference regarding this. My coding are as follows :

  MainActivity.java :

  import android.app.Activity;
  
  import android.app.ProgressDialog;
  
  import android.content.DialogInterface;
  
  import android.content.Intent;
  
  import android.net.Uri;
  
  import android.os.Bundle;
  
  import android.os.Handler;
  
  import android.os.Message;
  
  import android.os.PowerManager;
  
  import android.util.Log;
  
  import android.view.View;
  
  import android.widget.Button;
  
  import android.widget.Toast;
  
  import android.widget.VideoView;
  
  
  
  import com.netcompss.ffmpeg4android.CommandValidationException;
  
  import com.netcompss.ffmpeg4android.GeneralUtils;
  
  import com.netcompss.ffmpeg4android.Prefs;
  
  import com.netcompss.ffmpeg4android.ProgressCalculator;
  
  import com.netcompss.loader.LoadJNI;
  
  
  
  public class MainActivity extends Activity {
  
  public ProgressDialog progressBar;
  
  
  
  String workFolder = null;
  
  String demoVideoFolder = null;
  
  String demoVideoPath = null;
  
  String vkLogPath = null;
  
  LoadJNI vk;
  
  private final int STOP_TRANSCODING_MSG = -1;
  
  private final int FINISHED_TRANSCODING_MSG = 0;
  
  private boolean commandValidationFailedFlag = false;
  
  
  
  Button button;
  
  VideoView videoView;
  
  private static final int PICK_FROM_GALLERY = 1;
  
  
  
  
  
  private void runTranscodingUsingLoader() {
  
      Log.i(Prefs.TAG, "runTranscodingUsingLoader started...");
  
  
  
      PowerManager powerManager = (PowerManager)MainActivity.this.getSystemService(Activity.POWER_SERVICE);
  
      PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VK_LOCK");
  
      Log.d(Prefs.TAG, "Acquire wake lock");
  
      wakeLock.acquire();
  
  
  
  
  
  
  
      String[] complexCommand = {"ffmpeg","-y" ,"-i", "/sdcard/videokit/in.mp4","-strict","experimental",
  
              "-vf", "movie=/sdcard/videokit/watermark.png [watermark];" +
  
              " [in][watermark] overlay=main_w-overlay_w-10:10 [out]","-s",
  
              "320x240","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab",
  
              "48000", "-ac", "2", "-ar", "22050", "/sdcard/videokit/out1.mp4"};
  
      ///////////////////////////////////////////////////////////////////////
  
  
  
  
  
      vk = new LoadJNI();
  
      try {
  
          // running complex command with validation
  
          vk.run(complexCommand, workFolder, getApplicationContext());
  
  
  
          // running without command validation
  
          //vk.run(complexCommand, workFolder, getApplicationContext(), false);
  
  
  
          // running regular command with validation
  
          //vk.run(GeneralUtils.utilConvertToComplex(commandStr), workFolder, getApplicationContext());
  
  
  
          Log.i(Prefs.TAG, "vk.run finished.");
  
          // copying vk.log (internal native log) to the videokit folder
  
          GeneralUtils.copyFileToFolder(vkLogPath, demoVideoFolder);
  
  
  
      } catch (CommandValidationException e) {
  
          Log.e(Prefs.TAG, "vk run exeption.", e);
  
          commandValidationFailedFlag = true;
  
  
  
      } catch (Throwable e) {
  
          Log.e(Prefs.TAG, "vk run exeption.", e);
  
      }
  
      finally {
  
          if (wakeLock.isHeld()) {
  
              wakeLock.release();
  
              Log.i(Prefs.TAG, "Wake lock released");
  
          }
  
          else{
  
              Log.i(Prefs.TAG, "Wake lock is already released, doing nothing");
  
          }
  
      }
  
  
  
      // finished Toast
  
      String rc = null;
  
      if (commandValidationFailedFlag) {
  
          rc = "Command Vaidation Failed";
  
      }
  
      else {
  
          rc = GeneralUtils.getReturnCodeFromLog(vkLogPath);
  
      }
  
      final String status = rc;
  
      MainActivity.this.runOnUiThread(new Runnable() {
  
          public void run() {
  
              Toast.makeText(MainActivity.this, status, Toast.LENGTH_LONG).show();
  
              if (status.equals("Transcoding Status: Failed")) {
  
                  Toast.makeText(MainActivity.this, "Check: " + vkLogPath + " for more information.", Toast.LENGTH_LONG).show();
  
              }
  
          }
  
      });
  
  }
  
  
  
  
  
  @Override
  
  public void onCreate(Bundle savedInstanceState) {
  
      super.onCreate(savedInstanceState);
  
      setContentView(R.layout.activity_main);
  
  
  
      button = (Button) findViewById(R.id.button);
  
  
  
      videoView = (VideoView) findViewById(R.id.videoview);
  
  
  
      button.setOnClickListener(new View.OnClickListener() {
  
  
  
          public void onClick(View v) {
  
              // TODO Auto-generated method stub
  
              Intent intent = new Intent();
  
  
  
              intent.setType("video/*");
  
              intent.setAction(Intent.ACTION_GET_CONTENT);
  
  
  
              startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_GALLERY);
  
          }
  
      });
  
  
  
  }
  
  
  
  @Override
  
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
  
      if (resultCode != RESULT_OK) return;
  
  
  
      if (requestCode == PICK_FROM_GALLERY) {
  
          Uri mVideoURI = data.getData();
  
          videoView.setVideoURI(mVideoURI);
  
          videoView.start();
  
          demoVideoFolder = mVideoURI.getPath();
  
          demoVideoPath = demoVideoFolder;
  
          savevideo(mVideoURI);
  
  
  
      }
  
  
  
  
  
  }
  
  private Handler handler = new Handler() {
  
      @Override
  
      public void handleMessage(Message msg) {
  
          Log.i(Prefs.TAG, "Handler got message");
  
          if (progressBar != null) {
  
              progressBar.dismiss();
  
  
  
              // stopping the transcoding native
  
              if (msg.what == STOP_TRANSCODING_MSG) {
  
                  Log.i(Prefs.TAG, "Got cancel message, calling fexit");
  
                  vk.fExit(getApplicationContext());
  
  
  
  
  
              }
  
          }
  
      }
  
  };
  
  
  
  public void runTranscoding() {
  
      progressBar = new ProgressDialog(MainActivity.this);
  
      progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
  
      progressBar.setTitle("FFmpeg4Android Direct JNI");
  
      progressBar.setMessage("Press the cancel button to end the operation");
  
      progressBar.setMax(100);
  
      progressBar.setProgress(0);
  
  
  
      progressBar.setCancelable(false);
  
      progressBar.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() {
  
          @Override
  
          public void onClick(DialogInterface dialog, int which) {
  
              handler.sendEmptyMessage(STOP_TRANSCODING_MSG);
  
          }
  
      });
  
  
  
      progressBar.show();
  
  
  
      new Thread() {
  
          public void run() {
  
              Log.d(Prefs.TAG,"Worker started");
  
              try {
  
                  //sleep(5000);
  
                  runTranscodingUsingLoader();
  
                  handler.sendEmptyMessage(FINISHED_TRANSCODING_MSG);
  
  
  
              } catch(Exception e) {
  
                  Log.e("threadmessage",e.getMessage());
  
              }
  
          }
  
      }.start();
  
  
  
      // Progress update thread
  
      new Thread() {
  
          ProgressCalculator pc = new ProgressCalculator(vkLogPath);
  
          public void run() {
  
              Log.d(Prefs.TAG,"Progress update started");
  
              int progress = -1;
  
              try {
  
                  while (true) {
  
                      sleep(300);
  
                      progress = pc.calcProgress();
  
                      if (progress != 0 && progress < 100) {
  
                          progressBar.setProgress(progress);
  
                      }
  
                      else if (progress == 100) {
  
                          Log.i(Prefs.TAG, "==== progress is 100, exiting Progress update thread");
  
                          pc.initCalcParamsForNextInter();
  
                          break;
  
                      }
  
                  }
  
  
  
              } catch(Exception e) {
  
                  Log.e("threadmessage",e.getMessage());
  
              }
  
          }
  
      }.start();
  
  }
  
  
  
  public void savevideo (Uri mVideoURI){
  
      demoVideoFolder = mVideoURI.getPath();
  
      demoVideoPath = demoVideoFolder;
  
      Log.i(Prefs.TAG, getString(R.string.app_name) + " version: " + GeneralUtils.getVersionName(getApplicationContext()));
  
  
  
      Button invoke = (Button) findViewById(R.id.button);
  
      invoke.setOnClickListener(new View.OnClickListener() {
  
          public void onClick(View v) {
  
              Log.i(Prefs.TAG, "run clicked.");
  
              runTranscoding();
  
          }
  
      });
  
  
  
      workFolder = getApplicationContext().getFilesDir() + "/";
  
      Log.i(Prefs.TAG, "workFolder (license and logs location) path: " + workFolder);
  
      vkLogPath = workFolder + "vk.log";
  
      Log.i(Prefs.TAG, "vk log (native log) path: " + vkLogPath);
  
      GeneralUtils.copyLicenseFromAssetsToSDIfNeeded(this, workFolder);
  
      GeneralUtils.copyDemoVideoFromAssetsToSDIfNeeded(this, demoVideoFolder);
  
      int rc = GeneralUtils.isLicenseValid(getApplicationContext(), workFolder);
  
      Log.i(Prefs.TAG, "License check RC: " + rc);
  
  
  
  }
  
  }

  ffmpeg command :

  String[] complexCommand = {"ffmpeg","-y" ,"-i",  "/sdcard/videokit/in.mp4","-strict","experimental",
  
              "-vf", "movie=/sdcard/videokit/watermark.png [watermark];" +
  
              " [in][watermark] overlay=main_w-overlay_w-10:10 [out]","-s",
  
              "320x240","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab",
  
              "48000", "-ac", "2", "-ar", "22050", "/sdcard/videokit/out1.mp4"};

  Tis command is from a sample project. How do i pass the video path to this command ? I do not know how to edit the command to support my requirement. Can someone guide me through this. Any help will be really helpful. Thank you.

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