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• Video processing and filtering libraries

  17 décembre 2014, par Dalvik

  I’m trying to decide which library to choose in order to create app that can
  filters a video, for example beautify or clarity.

  During my search I came across 2 candidates : OpenCv and FFmpeg, and I found a complete framework only for FFmpeg(so +1 for this).

  I couldn’t found a complete comparision between the two so if someone has tried them and can post the answer it would be really helpful.

  Edit :

  Another candidate is Marvin framework(Java project) for Android - https://code.google.com/p/android-image-filtering/

• Merge multiple videos side by side like unfold application (Android)

  28 janvier 2019, par Jatin Wadhavana

  We need help regarding this Unfold application’s feature "create a story using Video".

  How it would be feasible ?
  Which steps need to follow ?

  Reference app link for video features : https://play.google.com/store/apps/details?id=com.moonlab.unfold&hl=en_IN

  Thanks in advance.

• Unable play Audio AC3 in Exoplayer + FFmpeg, i read the guide correctly, should I be wrong ?

  24 mars 2020, par mOsCpU0

  I would like to implement FFmpeg in Exoplayer in my App, in order to read video formats with AC3 Audio track.

  I followed these steps, but I still don’t hear Audio AC3 and I can’t enable Exoplayer to play the audio track via Software.

  I have my code if needed and the guide I used is this :

  https://github.com/google/ExoPlayer/tree/release-v2/extensions/ffmpeg

  I hope for your help !

  package com.omegasus_test.myapplication;
  
  
  
  import androidx.appcompat.app.AppCompatActivity;
  
  
  
  import android.app.Dialog;
  
  import android.net.Uri;
  
  import android.os.Bundle;
  
  import android.os.Environment;
  
  import android.view.View;
  
  import android.view.Window;
  
  import android.widget.Button;
  
  import android.widget.RelativeLayout;
  
  import android.widget.TextView;
  
  import android.widget.Toast;
  
  
  
  import com.google.android.exoplayer2.DefaultRenderersFactory;
  
  import com.google.android.exoplayer2.ExoPlaybackException;
  
  import com.google.android.exoplayer2.ExoPlayer;
  
  import com.google.android.exoplayer2.ExoPlayerFactory;
  
  import com.google.android.exoplayer2.PlaybackParameters;
  
  import com.google.android.exoplayer2.Player;
  
  import com.google.android.exoplayer2.Timeline;
  
  import com.google.android.exoplayer2.source.ExtractorMediaSource;
  
  import com.google.android.exoplayer2.source.MediaSource;
  
  import com.google.android.exoplayer2.source.TrackGroupArray;
  
  import com.google.android.exoplayer2.source.hls.HlsMediaSource;
  
  import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
  
  import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
  
  import com.google.android.exoplayer2.trackselection.TrackSelection;
  
  import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
  
  import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
  
  import com.google.android.exoplayer2.ui.SimpleExoPlayerView;
  
  import com.google.android.exoplayer2.upstream.BandwidthMeter;
  
  import com.google.android.exoplayer2.upstream.DefaultBandwidthMeter;
  
  import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
  
  import com.google.android.exoplayer2.util.Util;
  
  
  
  import java.io.File;
  
  import java.io.FileOutputStream;
  
  
  
  public class MainActivity extends AppCompatActivity {
  
      String LINK_TO_PLAY="";
  
      ExoPlayer player;
  
      @Override
  
      protected void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_main);
  
          Uri uri=Uri.parse(LINK_TO_PLAY);
  
          final SimpleExoPlayerView pv=findViewById(R.id.player_view);
  
          pv.setVisibility(View.GONE);
  
          pv.setResizeMode(AspectRatioFrameLayout.RESIZE_MODE_FIT);
  
          BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
  
          TrackSelection.Factory videoTrackSelectionFactory =new AdaptiveTrackSelection.Factory(bandwidthMeter);
  
          DefaultTrackSelector trackSelector =new DefaultTrackSelector(videoTrackSelectionFactory);
  
          trackSelector.setParameters( trackSelector.getParameters().buildUpon().setPreferredAudioLanguage("ita"));
  
          DefaultRenderersFactory rf = new DefaultRenderersFactory(getApplicationContext()).setExtensionRendererMode(DefaultRenderersFactory.EXTENSION_RENDERER_MODE_PREFER);
  
          player = ExoPlayerFactory.newSimpleInstance(getApplicationContext(),rf, trackSelector);
  
          pv.setPlayer(player);
  
          MediaSource source;
  
          if(LINK_TO_PLAY.contains("file://")){
  
              DefaultDataSourceFactory dataSourceFactory = new DefaultDataSourceFactory(getApplicationContext(), Util.getUserAgent(getApplicationContext(), "com.omegasus_test.myapplication"));
  
              source = new ExtractorMediaSource.Factory(dataSourceFactory).createMediaSource(uri);
  
          }else if(LINK_TO_PLAY.contains(".m3u8")){
  
              DefaultDataSourceFactory dataSourceFactory = new DefaultDataSourceFactory(getApplicationContext(),Util.getUserAgent(getApplicationContext(), "com.omegasus_test.myapplication"));
  
              source = new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(uri);
  
          }else{
  
              DefaultDataSourceFactory dataSourceFactory = new DefaultDataSourceFactory(getApplicationContext(),Util.getUserAgent(getApplicationContext(), "com.omegasus_test.myapplication"));
  
              source = new ExtractorMediaSource.Factory(dataSourceFactory).createMediaSource(uri);
  
          }
  
          player.prepare(source);
  
          player.addListener(new Player.EventListener(){
  
              public void onSeekProcessed(){}
  
              public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
  
                  if(playbackState == ExoPlayer.STATE_READY){
  
                      pv.setVisibility(View.VISIBLE);
  
                      pv.setResizeMode(AspectRatioFrameLayout.RESIZE_MODE_FIT);
  
                  }else if(playbackState==ExoPlayer.STATE_BUFFERING){
  
                  }else if(playbackState==ExoPlayer.STATE_ENDED){
  
                  }
  
              }
  
              public void onTimelineChanged(Timeline p1, Object p2, int p3){
  
  
  
              }
  
              public void onTracksChanged(TrackGroupArray p1, TrackSelectionArray p2){
  
  
  
              }
  
              public void onShuffleModeEnabledChanged(boolean p1){
  
  
  
              }
  
              public void onPositionDiscontinuity(int p1){
  
  
  
              }
  
              public void onPlaybackParametersChanged(PlaybackParameters p1){
  
  
  
              }
  
              public void onLoadingChanged(boolean p1){
  
  
  
              }
  
              public void onPlayerError(ExoPlaybackException p1){
  
                  if(p1.getMessage()==null){
  
                      Toast.makeText(getApplicationContext(),"Errore sconosciuto",Toast.LENGTH_SHORT).show();
  
                  }else{
  
                      Toast.makeText(getApplicationContext(),"Player Error: "+p1.getMessage(),Toast.LENGTH_SHORT).show();
  
                  }
  
                  player.setPlayWhenReady(false);
  
                  player.stop();
  
                  player.seekTo(0);
  
                  player.release();
  
                  finish();
  
              }
  
              public void onRepeatModeChanged(int p1){
  
  
  
              }
  
          });
  
          player.setPlayWhenReady(true);
  
      }
  
  
  
  }