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copied!<p>JCodec ( <a href="http://jcodec.org" rel="nofollow">http://jcodec.org</a>) is what you are looking for. It's an open source pure java video codec library. It doesn't support AVI at the moment but IMHO MP4 format is better suited for H.264 anyway. </p> <p>In case you decide to go with JCodec, here's a sample class you can use:</p> <pre><code>public class SequenceEncoder { private SeekableByteChannel ch; private Picture toEncode; private RgbToYuv420 transform; private H264Encoder encoder; private ArrayList<ByteBuffer> spsList; private ArrayList<ByteBuffer> ppsList; private CompressedTrack outTrack; private ByteBuffer _out; private int frameNo; private MP4Muxer muxer; public SequenceEncoder(File out) throws IOException { this.ch = NIOUtils.writableFileChannel(out); // Transform to convert between RGB and YUV transform = new RgbToYuv420(0, 0); // Muxer that will store the encoded frames muxer = new MP4Muxer(ch, Brand.MP4); // Add video track to muxer outTrack = muxer.addTrackForCompressed(TrackType.VIDEO, 25); // Allocate a buffer big enough to hold output frames _out = ByteBuffer.allocate(1920 * 1080 * 6); // Create an instance of encoder encoder = new H264Encoder(); // Encoder extra data ( SPS, PPS ) to be stored in a special place of // MP4 spsList = new ArrayList<ByteBuffer>(); ppsList = new ArrayList<ByteBuffer>(); } public void encodeImage(BufferedImage bi) throws IOException { if (toEncode == null) { toEncode = Picture.create(bi.getWidth(), bi.getHeight(), ColorSpace.YUV420); } // Perform conversion for (int i = 0; i < 3; i++) Arrays.fill(toEncode.getData()[i], 0); transform.transform(AWTUtil.fromBufferedImage(bi), toEncode); // Encode image into H.264 frame, the result is stored in '_out' buffer _out.clear(); ByteBuffer result = encoder.encodeFrame(_out, toEncode); // Based on the frame above form correct MP4 packet spsList.clear(); ppsList.clear(); H264Utils.encodeMOVPacket(result, spsList, ppsList); // Add packet to video track outTrack.addFrame(new MP4Packet(result, frameNo, 25, 1, frameNo, true, null, frameNo, 0)); frameNo++; } public void finish() throws IOException { // Push saved SPS/PPS to a special storage in MP4 outTrack.addSampleEntry(H264Utils.createMOVSampleEntry(spsList, ppsList)); // Write MP4 header and finalize recording muxer.writeHeader(); NIOUtils.closeQuietly(ch); } public static void main(String[] args) throws IOException { SequenceEncoder encoder = new SequenceEncoder(new File("video.mp4")); for (int i = 1; i < 100; i++) { BufferedImage bi = ImageIO.read(new File(String.format("folder/img%08d.png", i))); encoder.encodeImage(bi); } encoder.finish(); } } </code></pre>

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