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• Add audio to Xuggler video stream (ffmpeg)

  11 avril 2017, par zholmes1

  I am trying to set up Facebook live video streaming in Java. I maintain a BufferedImage separately from this method which contains the image that is being streamed. I am connecting successfully and streaming the video, but Facebook takes the video down after two minutes because I am not sending audio as well. How can I add audio to this stream ?

      IContainer container = IContainer.make();
  
      IContainerFormat containerFormat_live = IContainerFormat.make();
  
      containerFormat_live.setOutputFormat("flv", streamUrl, null);
  
      container.setInputBufferLength(0);
  
      int retVal = container.open(streamUrl, IContainer.Type.WRITE, containerFormat_live);
  
      if (retVal < 0) {
  
          System.err.println("Could not open output container for live stream");
  
          System.exit(1);
  
      }
  
  
  
  
  
      IStream videoStream = container.addNewStream(0);
  
      IStreamCoder videoCoder = videoStream.getStreamCoder();
  
      ICodec videoCodec = ICodec.findEncodingCodec(ICodec.ID.CODEC_ID_H264);
  
      videoCoder.setNumPicturesInGroupOfPictures(5);
  
      videoCoder.setCodec(videoCodec);
  
      videoCoder.setBitRate(200000);
  
      videoCoder.setPixelType(IPixelFormat.Type.YUV420P);
  
      videoCoder.setHeight(IMAGE_HEIGHT_PX_OUTPUT);
  
      videoCoder.setWidth(IMAGE_WIDTH_PX_OUTPUT);
  
      System.out.println("[ENCODER] video size is " + IMAGE_HEIGHT_PX_OUTPUT + "x" + IMAGE_WIDTH_PX_OUTPUT);
  
      videoCoder.setFlag(IStreamCoder.Flags.FLAG_QSCALE, true);
  
      videoCoder.setGlobalQuality(0);
  
      IRational frameRate = IRational.make(30, 1);
  
      videoCoder.setFrameRate(frameRate);
  
  
  
      IRational timeBase = IRational.make(frameRate.getDenominator(), frameRate.getNumerator());
  
      videoCoder.setTimeBase(timeBase);
  
  
  
  //        IStream audioStream = container.addNewStream(1);
  
  //        IStreamCoder audioCoder = audioStream.getStreamCoder();
  
  //        ICodec audioCodec = ICodec.findEncodingCodec(ICodec.ID.CODEC_ID_AAC);
  
  //        audioCoder.setCodec(audioCodec);
  
  //        audioCoder.setBitRate(128 * 1024);
  
  //        audioCoder.setChannels(1);
  
  //        audioCoder.setSampleRate(44100);
  
  //        audioCoder.setFrameRate(IRational.make(1, 1));
  
  //        audioCoder.setTimeBase(timeBase);
  
  //
  
  //        IAudioResampler audioResampler = IAudioResampler.make(audioCoder.getChannels(), audioCoder.getChannels(), audioCoder.getSampleRate(), audioCoder.getSampleRate(), IAudioSamples.Format.FMT_S32, audioCoder.getSampleFormat());
  
  
  
      Properties props = new Properties();
  
      InputStream is = XugglerRtmpReferenceImpl.class.getResourceAsStream("/libx264-normal.ffpreset");
  
      try {
  
          props.load(is);
  
      } catch (IOException e) {
  
          System.err.println("You need the libx264-normal.ffpreset file from the Xuggle distribution in your classpath.");
  
          System.exit(1);
  
      }
  
  
  
      Configuration.configure(props, videoCoder);
  
  //        Configuration.configure(props, audioCoder);
  
  
  
      videoCoder.open();
  
  //        audioCoder.open();
  
      container.writeHeader();
  
  
  
  //        IAudioSamples audioSamples = IAudioSamples.make(512, audioCoder.getChannels());
  
  //        audioSamples.setComplete(true, 1024, audioCoder.getSampleRate(), audioCoder.getChannels(), IAudioSamples.Format.FMT_S32, 0);
  
  //
  
  //        IAudioSamples resampledAudio = IAudioSamples.make(512, audioCoder.getChannels(), IAudioSamples.Format.FMT_S32);
  
  //        audioResampler.resample(resampledAudio, audioSamples, 0);
  
  
  
  
  
      long firstTimeStamp = System.currentTimeMillis();
  
      long lastKeyFrameTimestamp = 0;
  
      long lastTimeStamp = System.currentTimeMillis();
  
      int i = 0;
  
      while (streaming) {
  
          //long iterationStartTime = System.currentTimeMillis();
  
          long now = System.currentTimeMillis();
  
          //convert it for Xuggler
  
          BufferedImage currentScreenshot = new BufferedImage(bufferedImage.getWidth(), bufferedImage.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
  
          currentScreenshot.getGraphics().drawImage(bufferedImage, 0, 0, null);
  
          //start the encoding process
  
          IPacket packet = IPacket.make();
  
          IConverter converter = ConverterFactory.createConverter(currentScreenshot, IPixelFormat.Type.YUV420P);
  
          long timeStamp = (now - firstTimeStamp) * 1000;
  
          IVideoPicture outFrame = converter.toPicture(currentScreenshot, timeStamp);
  
  
  
          // make sure there is a keyframe at least every 2 seconds
  
          if (System.currentTimeMillis() - lastKeyFrameTimestamp > 1500) {
  
              outFrame.setKeyFrame(true);
  
              lastKeyFrameTimestamp = System.currentTimeMillis();
  
          }
  
          outFrame.setQuality(0);
  
          videoCoder.encodeVideo(packet, outFrame, 0);
  
          // audioCoder.encodeAudio(packet, IAudioSamples.make(0, audioCoder.getChannels()), 0);
  
  
  
          outFrame.delete();
  
          if (packet.isComplete()) {
  
              container.writePacket(packet);
  
              System.out.println("[ENCODER] writing packet of size " + packet.getSize() + " for elapsed time " + ((timeStamp - lastTimeStamp) / 1000));
  
              lastTimeStamp = System.currentTimeMillis();
  
          }
  
          System.out.println("[ENCODER] encoded image " + i + " in " + (System.currentTimeMillis() - now));
  
          i++;
  
          try {
  
              // sleep for framerate milliseconds
  
              Thread.sleep(Math.max((long) (1000 / frameRate.getDouble()) - (System.currentTimeMillis() - now), 0));
  
          } catch (InterruptedException e) {
  
              e.printStackTrace();
  
          }
  
      }
  
      container.writeTrailer();

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