Honestly don't waste your time with JMF, you can consider that offering dead. Here is how you would do screen shotting to an rtmp stream using h.264 (thanks to tyreus@gmail.com for the example). If the code doesn't show up here's pastebin for it: http://pastebin.com/sJHwj0nW
import com.xuggle.xuggler.Configuration;import com.xuggle.xuggler.ICodec;import com.xuggle.xuggler.IContainer;import com.xuggle.xuggler.IContainerFormat;import com.xuggle.xuggler.IPacket;import com.xuggle.xuggler.IPixelFormat;import com.xuggle.xuggler.IRational;import com.xuggle.xuggler.IStream;import com.xuggle.xuggler.IStreamCoder;import com.xuggle.xuggler.IVideoPicture;import com.xuggle.xuggler.video.ConverterFactory;import com.xuggle.xuggler.video.IConverter;import java.awt.AWTException;import java.awt.Rectangle;import java.awt.Robot;import java.awt.image.BufferedImage;import java.io.IOException;import java.io.InputStream;import java.util.Properties;public class XugglerRtmpReferenceImpl { private static String url = "rtmp://your.test.server/screen/"; private static String fileName = "test/teststream"; private static int framesToEncode = 60; private static int x = 0; private static int y = 0; private static int height = 480; private static int width = 640; public static void main(String[] args) { IContainer container = IContainer.make(); IContainerFormat containerFormat_live = IContainerFormat.make(); containerFormat_live.setOutputFormat("flv", url + fileName, null); container.setInputBufferLength(0); int retVal = container.open(url + fileName, IContainer.Type.WRITE, containerFormat_live); if (retVal < 0) { System.err.println("Could not open output container for live stream"); System.exit(1); } IStream stream = container.addNewStream(0); IStreamCoder coder = stream.getStreamCoder(); ICodec codec = ICodec.findEncodingCodec(ICodec.ID.CODEC_ID_H264); coder.setNumPicturesInGroupOfPictures(5); coder.setCodec(codec); coder.setBitRate(200000); coder.setPixelType(IPixelFormat.Type.YUV420P); coder.setHeight(height); coder.setWidth(width); System.out.println("[ENCODER] video size is "+ width +"x"+ height); coder.setFlag(IStreamCoder.Flags.FLAG_QSCALE, true); coder.setGlobalQuality(0); IRational frameRate = IRational.make(5, 1); coder.setFrameRate(frameRate); coder.setTimeBase(IRational.make(frameRate.getDenominator(), frameRate.getNumerator())); 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, coder); coder.open(); container.writeHeader(); long firstTimeStamp = System.currentTimeMillis(); long lastTimeStamp = -1; int i = 0; try { Robot robot = new Robot(); while (i < framesToEncode) { //long iterationStartTime = System.currentTimeMillis(); long now = System.currentTimeMillis(); //grab the screenshot BufferedImage image = robot.createScreenCapture(new Rectangle(x, y, width, height)); //convert it for Xuggler BufferedImage currentScreenshot = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_3BYTE_BGR); currentScreenshot.getGraphics().drawImage(image, 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); if (i == 0) { //make first frame keyframe outFrame.setKeyFrame(true); } outFrame.setQuality(0); coder.encodeVideo(packet, outFrame, 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 = timeStamp; } System.out.println("[ENCODER] encoded image "+ i +" in "+ (System.currentTimeMillis() - now)); i++; try { Thread.sleep(Math.max((long) (1000 / frameRate.getDouble()) - (System.currentTimeMillis() - now), 0)); } catch (InterruptedException e) { e.printStackTrace(); } } } catch (AWTException e) { e.printStackTrace(); } container.writeTrailer(); }}