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• FFMPEG h.264 stream to VLC from raw YUV444 produces black screen

  30 novembre 2018, par GerbGerb

  Not sure if this fits better here or over on Super User, so please redirect if here is the wrong place.

  I am piping raw YUV444 640x480 frames to ffmpeg from inside a C++ program using stdout. ffmpeg encodes them using h.264 and streams the video via UDP to an IP of my choice.

  When I am not streaming and saving the video as -mp4 file, everything works - But when I stream over the network and try to receive in VLC, the stream is received and the playing timer under the video screen runs, but the image is black, none of the video is displayed. Also I have some crackling sounds on my audio output.

  My FFMPEG settings are as follows :

  ffmpeg -y -loglevel info -f rawvideo -r 25 -c:v rawvideo -pix_fmt yuv444p -s 640x480 -i - -c:v libx264 -preset superfast -framerate 25 -f mpegts udp://192.168.150.1:20001

  in VLC, I just use "open network stream" with udp ://@:20001. The port is open, I tested it with a simple dummy sender/receiver.
  Almost the same cli arguments for the video recording lead to a perfectly playable video when writing to a file and downloading it :

  ffmpeg -y -loglevel info -f rawvideo -r 25 -c:v rawvideo -pix_fmt yuv444p -s 640x480 -i - -c:v libx264 -preset superfast -framerate 25 video.mp4

  If I try to stream the same video using

  ffmpeg -i video.mp4 -v 0 -vcodec mpeg4 -f mpegts udp://192.168.150:20001

  the screen remains black.

  VLC debug output changes between different runs, because other modules are selected, so I assume stream type recognition goes haywire. But why ?

  What am I doing wrong ?

  Here the ffmpeg log
  and the VLC log

• Anomalie #4194 : Rendre spip_loader compatible php 7.2

  23 septembre 2019, par Franck D

  Hello :)
  Juste pour dire que j’ai fait un test avec laragon en php 7.3 et 7.4, cela semble bon sauf le warning sur pclzip dit plus haut

  Il y a une autre warning qui apparait :
  warning : preg_match() : Compilation failed : invalid range in character class at offset 4 in c :\...\spip_loader.php on line 1329

  mais dont la correction est simple via le super log que marcimat avait fait sur un warning identique dans svp https://zone.spip.net/trac/spip-zone/changeset/112275/spip-zone

  Il faudrait mettre :
  https://zone.spip.net/trac/spip-zone/browser/spip-zone/_outils_/spip_loader/trunk/spip_loader.php#L1329
  if (isset($_REQUEST[’dest’]) and preg_match(’/^[\w_.-]+$/’, $_REQUEST[’dest’]))

  J’ai essayer, et cela fait bien disparaitre le warning, reste le cas de pclzip.php ...
  https://zone.spip.net/trac/spip-zone/browser/spip-zone/_outils_/spip_loader/trunk/pclzip.php#L28
  Il y a une proposition de commit dans ce ticket :
  https://core.spip.net/issues/4384
  Reste à voir si cela est sufisant

• java.lang.ExceptionInInitializerError in FFmpeg Test

  22 janvier 2013, par Mehul Ranpara

  I have a demo called FFMpegTest of Android which i downloaded from here..https://github.com/appunite/AndroidFFmpeg..and i also have Library file of FFMpeg which is in this demo and i am using this Library in FFmpegTest..Now when i running..it gives java.lang.ExceptionInInitializerError.. Anyone have an idea about this..please share with me..Thanx in Advance..

  which is in...VideoActivity.java

  public class VideoActivity extends Activity implements OnClickListener,FFmpegListener, OnSeekBarChangeListener, OnItemSelectedListener 
  
  {
  
      private FFmpegPlayer mpegPlayer;
  
      private static boolean isSurfaceView = true;
  
      protected boolean mPlay = false;
  
      private View controlsView;
  
      private View loadingView;
  
      private SeekBar seekBar;
  
      public View videoView;
  
      private Button playPauseButton;
  
      private boolean mTracking = false;
  
      private View streamsView;
  
      private Spinner languageSpinner;
  
      private int languageSpinnerSelectedPosition = 0;
  
      private Spinner subtitleSpinner;
  
      private int subtitleSpinnerSelectedPosition = 0;
  
      private StreamAdapter languageAdapter;
  
      private StreamAdapter subtitleAdapter;
  
  
  
      private FFmpegStreamInfo audioStream = null;
  
      private FFmpegStreamInfo subtitleStream = null;
  
  
  
      @Override
  
      public void onCreate(Bundle savedInstanceState) 
  
      {
  
          this.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
  
          getWindow().setFormat(PixelFormat.RGB_565);
  
          getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DITHER);
  
  
  
          super.onCreate(savedInstanceState);
  
  
  
          this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
  
          this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
  
          this.getWindow().setBackgroundDrawable(null);
  
  
  
          this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
  
  
  
          if (isSurfaceView)
  
              VideoActivity.this.setContentView(R.layout.video_surfaceview);
  
          else
  
              VideoActivity.this.setContentView(R.layout.video_view);
  
  
  
          seekBar = (SeekBar) this.findViewById(R.id.seek_bar);
  
          seekBar.setOnSeekBarChangeListener(this);
  
  
  
          playPauseButton = (Button) this.findViewById(R.id.play_pause);
  
          playPauseButton.setOnClickListener(this);
  
  
  
          controlsView = this.findViewById(R.id.controls);
  
          streamsView = this.findViewById(R.id.streams);
  
          loadingView = this.findViewById(R.id.loading_view);
  
          languageSpinner = (Spinner) this.findViewById(R.id.language_spinner);
  
          subtitleSpinner = (Spinner) this.findViewById(R.id.subtitle_spinner);
  
  
  
          languageAdapter = new StreamAdapter(this,android.R.layout.simple_spinner_item,new ArrayList<ffmpegstreaminfo>(), StreamAdapterType.AUDIO);
  
          languageAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
  
          languageSpinner.setAdapter(languageAdapter);
  
          languageSpinner.setOnItemSelectedListener(this);
  
  
  
          subtitleAdapter = new StreamAdapter(this,android.R.layout.simple_spinner_item,new ArrayList<ffmpegstreaminfo>(), StreamAdapterType.SUBTITLE);
  
          subtitleAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
  
          subtitleSpinner.setAdapter(subtitleAdapter);
  
          subtitleSpinner.setOnItemSelectedListener(this);
  
  
  
          try
  
          {
  
              videoView = this.findViewById(R.id.video_view);
  
              //VideoActivity.this.mpegPlayer = new FFmpegPlayer((FFmpegDisplay)videoView, VideoActivity.this);
  
              this.mpegPlayer = new FFmpegPlayer((FFmpegDisplay)videoView, this);
  
              this.mpegPlayer.setMpegListener(this);
  
              setDataSource();
  
  
  
              //Too
  
          }
  
          catch (Exception e) 
  
          {
  
              e.printStackTrace();
  
          }
  
      }
  
  
  
      private static enum StreamAdapterType
  
      {
  
          AUDIO, SUBTITLE
  
      };
  
  
  
      private static class StreamAdapter extends ArrayAdapter<ffmpegstreaminfo>
  
      {
  
  
  
          private final StreamAdapterType adapterType;
  
  
  
          public StreamAdapter(Context context, int textViewResourceId,List<ffmpegstreaminfo> objects, StreamAdapterType adapterType)
  
          {
  
              super(context, textViewResourceId, objects);
  
              this.adapterType = adapterType;
  
          }
  
  
  
          @Override
  
          public View getView(int position, View convertView, ViewGroup parent)
  
          {
  
              TextView view = (TextView) super.getView(position, convertView, parent);
  
  
  
              FFmpegStreamInfo item = getItem(position);
  
              Locale locale = item.getLanguage();
  
  
  
              String formatter;
  
              if (StreamAdapterType.AUDIO.equals(adapterType))
  
              {
  
                  formatter = getContext().getString(R.string.language_spinner_drop_down);
  
              }
  
              else
  
              {
  
                  formatter = getContext().getString(R.string.subtitle_spinner_drop_down);
  
              }
  
              String languageName = locale == null ? getContext().getString(R.string.unknown) : locale.getDisplayLanguage();
  
              String text = String.format(formatter, languageName);
  
              view.setText(text);
  
              return view;
  
          }
  
  
  
          @Override
  
          public View getDropDownView(int position, View convertView, ViewGroup parent) 
  
          {
  
              CheckedTextView view = (CheckedTextView) super.getDropDownView(position, convertView, parent);
  
              FFmpegStreamInfo item = getItem(position);
  
              Locale locale = item.getLanguage();
  
              String languageName = locale == null ? getContext().getString(R.string.unknown) : locale.getDisplayLanguage();
  
              view.setText(languageName);
  
              return view;
  
          }
  
  
  
      }
  
  
  
      @Override
  
      protected void onPause() {
  
          super.onPause();
  
      };
  
  
  
      @Override
  
      protected void onResume() {
  
          super.onResume();
  
      }
  
  
  
      @Override
  
      protected void onDestroy()
  
      {
  
          super.onDestroy();
  
          this.mpegPlayer.setMpegListener(null);
  
          this.mpegPlayer.stop();
  
          stop();
  
      }
  
  
  
      private void setDataSource() 
  
      {
  
          Log.d("url", "checin");
  
          HashMap params = new HashMap();
  
  
  
          // set font for ass
  
          File assFont = new File(Environment.getExternalStorageDirectory(),"Roboto.ttf");
  
          params.put("ass_default_font_path", assFont.getAbsolutePath());
  
  
  
          Intent intent = getIntent();
  
          String url = intent.getStringExtra(AppConstants.VIDEO_PLAY_ACTION_EXTRA_URL);
  
          Log.d("url", url);
  
          if (url == null) 
  
          {
  
              throw new IllegalArgumentException(String.format("\"%s\" did not provided", AppConstants.VIDEO_PLAY_ACTION_EXTRA_URL));
  
          }
  
          if (intent.hasExtra(AppConstants.VIDEO_PLAY_ACTION_EXTRA_ENCRYPTION_KEY)) 
  
          {
  
              params.put("aeskey", intent.getStringExtra(AppConstants.VIDEO_PLAY_ACTION_EXTRA_ENCRYPTION_KEY));
  
          }
  
  
  
          this.playPauseButton.setBackgroundResource(android.R.drawable.ic_media_play);
  
          this.playPauseButton.setEnabled(true);
  
          mPlay = false;
  
  
  
          mpegPlayer.setDataSource(url, params, null, audioStream,subtitleStream);
  
      }
  
  
  
      @Override
  
      public void onClick(View v) 
  
      {
  
          int viewId = v.getId();
  
          switch (viewId)
  
          {
  
              case R.id.play_pause:
  
              resumePause();
  
              return;
  
  
  
              default:
  
              throw new RuntimeException();
  
          }
  
      }
  
  
  
      @Override
  
      public void onFFUpdateTime(int currentTimeS, int videoDurationS, boolean isFinished)
  
      {
  
          if (!mTracking)
  
          {
  
              seekBar.setMax(videoDurationS);
  
              seekBar.setProgress(currentTimeS);
  
          }
  
  
  
          if (isFinished) 
  
          {
  
              new AlertDialog.Builder(this)
  
                      .setTitle(R.string.dialog_end_of_video_title)
  
                      .setMessage(R.string.dialog_end_of_video_message)
  
                      .setCancelable(true).show();
  
          }
  
      }
  
  
  
      @Override
  
      public void onFFDataSourceLoaded(FFmpegError err, FFmpegStreamInfo[] streams) 
  
      {
  
          if (err != null) {
  
              String format = getResources().getString(
  
                      R.string.main_could_not_open_stream);
  
              String message = String.format(format, err.getMessage());
  
  
  
              Builder builder = new AlertDialog.Builder(VideoActivity.this);
  
              builder.setTitle(R.string.app_name)
  
                      .setMessage(message)
  
                      .setOnCancelListener(
  
                              new DialogInterface.OnCancelListener() {
  
  
  
                                  @Override
  
                                  public void onCancel(DialogInterface dialog) {
  
                                      VideoActivity.this.finish();
  
                                  }
  
                              }).show();
  
              return;
  
          }
  
          playPauseButton.setBackgroundResource(android.R.drawable.ic_media_play);
  
          playPauseButton.setEnabled(true);
  
          this.controlsView.setVisibility(View.VISIBLE);
  
          this.streamsView.setVisibility(View.VISIBLE);
  
          this.loadingView.setVisibility(View.GONE);
  
          this.videoView.setVisibility(View.VISIBLE);
  
          languageAdapter.clear();
  
          subtitleAdapter.clear();
  
          for (FFmpegStreamInfo streamInfo : streams) {
  
              CodecType mediaType = streamInfo.getMediaType();
  
              if (FFmpegStreamInfo.CodecType.AUDIO.equals(mediaType)) {
  
                  languageAdapter.add(streamInfo);
  
              } else if (FFmpegStreamInfo.CodecType.SUBTITLE.equals(mediaType)) {
  
                  subtitleAdapter.add(streamInfo);
  
              }
  
          }
  
      }
  
  
  
      private void displaySystemMenu(boolean visible) {
  
          if (Build.VERSION.SDK_INT >= 14) {
  
              displaySystemMenu14(visible);
  
          } else if (Build.VERSION.SDK_INT >= 11) {
  
              displaySystemMenu11(visible);
  
          }
  
      }
  
  
  
      @SuppressWarnings("deprecation")
  
      @TargetApi(11)
  
      private void displaySystemMenu11(boolean visible) {
  
          if (visible) {
  
              this.videoView.setSystemUiVisibility(View.STATUS_BAR_VISIBLE);
  
          } else {
  
              this.videoView.setSystemUiVisibility(View.STATUS_BAR_HIDDEN);
  
          }
  
      }
  
  
  
      @TargetApi(14)
  
      private void displaySystemMenu14(boolean visible) {
  
          if (visible) {
  
              this.videoView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
  
          } else {
  
              this.videoView
  
                      .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
  
          }
  
      }
  
  
  
      public void resumePause() {
  
          this.playPauseButton.setEnabled(false);
  
          if (mPlay) {
  
              mpegPlayer.pause();
  
          } else {
  
              mpegPlayer.resume();
  
              displaySystemMenu(true);
  
          }
  
          mPlay = !mPlay;
  
      }
  
  
  
      @Override
  
      public void onFFResume(NotPlayingException result) {
  
          this.playPauseButton
  
                  .setBackgroundResource(android.R.drawable.ic_media_pause);
  
          this.playPauseButton.setEnabled(true);
  
  
  
          displaySystemMenu(false);
  
          mPlay = true;
  
      }
  
  
  
      @Override
  
      public void onFFPause(NotPlayingException err) {
  
          this.playPauseButton
  
                  .setBackgroundResource(android.R.drawable.ic_media_play);
  
          this.playPauseButton.setEnabled(true);
  
          mPlay = false;
  
      }
  
  
  
      private void stop() {
  
          this.controlsView.setVisibility(View.GONE);
  
          this.streamsView.setVisibility(View.GONE);
  
          this.loadingView.setVisibility(View.VISIBLE);
  
          this.videoView.setVisibility(View.INVISIBLE);
  
      }
  
  
  
      @Override
  
      public void onFFStop() {
  
      }
  
  
  
      @Override
  
      public void onFFSeeked(NotPlayingException result) 
  
      {
  
  //      if (result != null)
  
  //          throw new RuntimeException(result);
  
      }
  
  
  
      @Override
  
      public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) 
  
      {
  
          if (fromUser) 
  
          {
  
              mpegPlayer.seek(progress);
  
          }
  
      }
  
  
  
      @Override
  
      public void onStartTrackingTouch(SeekBar seekBar) {
  
          mTracking = true;
  
      }
  
  
  
      @Override
  
      public void onStopTrackingTouch(SeekBar seekBar) {
  
          mTracking = false;
  
      }
  
  
  
      private void setDataSourceAndResumeState() {
  
          int progress = seekBar.getProgress();
  
          setDataSource();
  
          mpegPlayer.seek(progress);
  
          mpegPlayer.resume();
  
      }
  
  
  
      @Override
  
      public void onItemSelected(AdapterView&lt;?> parentView,
  
              View selectedItemView, int position, long id) {
  
          FFmpegStreamInfo streamInfo = (FFmpegStreamInfo) parentView
  
                  .getItemAtPosition(position);
  
          if (parentView == languageSpinner) {
  
              if (languageSpinnerSelectedPosition != position) {
  
                  languageSpinnerSelectedPosition = position;
  
                  audioStream = streamInfo;
  
                  setDataSourceAndResumeState();
  
              }
  
          } else if (parentView == subtitleSpinner) {
  
              if (subtitleSpinnerSelectedPosition != position) {
  
                  subtitleSpinnerSelectedPosition = position;
  
                  subtitleStream = streamInfo;
  
                  setDataSourceAndResumeState();
  
              }
  
          } else {
  
              throw new RuntimeException();
  
          }
  
      }
  
  
  
      @Override
  
      public void onNothingSelected(AdapterView&lt;?> parentView) {
  
          // if (parentView == languageSpinner) {
  
          // audioStream = null;
  
          // } else if (parentView == subtitleSpinner) {
  
          // subtitleStream = null;
  
          // } else {
  
          // throw new RuntimeException();
  
          // }
  
          // play();
  
      }
  
  
  
  }
  
  </ffmpegstreaminfo></ffmpegstreaminfo></ffmpegstreaminfo></ffmpegstreaminfo>

  and this is my logcat :-

  01-22 15:29:15.302: E/AndroidRuntime(1560): FATAL EXCEPTION: main
  
  01-22 15:29:15.302: E/AndroidRuntime(1560): java.lang.ExceptionInInitializerError
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at java.lang.Class.newInstanceImpl(Native Method)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at java.lang.Class.newInstance(Class.java:1319)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.app.ActivityThread.access$600(ActivityThread.java:123)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.os.Handler.dispatchMessage(Handler.java:99)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.os.Looper.loop(Looper.java:137)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at android.app.ActivityThread.main(ActivityThread.java:4424)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at java.lang.reflect.Method.invokeNative(Native Method)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at java.lang.reflect.Method.invoke(Method.java:511)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at dalvik.system.NativeStart.main(Native Method)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load ffmpeg: findLibrary returned null
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at java.lang.Runtime.loadLibrary(Runtime.java:365)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at java.lang.System.loadLibrary(System.java:535)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     at roman10.ffmpegTest.VideoBrowser.<clinit>(VideoBrowser.java:37)
  
  01-22 15:29:15.302: E/AndroidRuntime(1560):     ... 15 more
  
  </clinit>