做网站推广,织梦网站怎样做防护,北京购物网站建设公司,精准扶贫电商网站建设计划书手头做一个视频相关项目#xff0c;但是客户发来的测试视频(avi格式) 现有组件不能解码。现有视频解码组件方案有基于JMF和opencv Jni调用。远远不能满足目前市面上玲琅满目的各种视频编码标准。进行检索 找到xuggler官方主页#xff1a;http://www.xuggle.com/xuggler 对5.…手头做一个视频相关项目但是客户发来的测试视频(avi格式) 现有组件不能解码。现有视频解码组件方案有基于JMF和opencv Jni调用。远远不能满足目前市面上玲琅满目的各种视频编码标准。进行检索 找到xuggler官方主页http://www.xuggle.com/xuggler  对5.4版本进行简单封装实现现有组件接口。需要slf4j包支持。实现了从现有组件只能支持摄像头和特定编码AVI文件到多种编码格式视频解码的支持。经过测试至少支持 flv mov avi mpg wmv mp4 mkv 这些格式的视频解码。实现代码如下package edu.zjut.framecollector;import java.awt.image.BufferedImage;import java.io.File;import javax.media.ControllerEvent;import javax.media.ControllerListener;import javax.swing.JFileChooser;import com.xuggle.xuggler.Global;import com.xuggle.xuggler.ICodec;import com.xuggle.xuggler.IContainer;import com.xuggle.xuggler.IPacket;import com.xuggle.xuggler.IPixelFormat;import com.xuggle.xuggler.IStream;import com.xuggle.xuggler.IStreamCoder;import com.xuggle.xuggler.IVideoPicture;import com.xuggle.xuggler.IVideoResampler;import com.xuggle.xuggler.Utils;/*** author 田旭园 E-mail: tianxuyuanyahoo.com.cn* version 1.0 创建时间2012-8-14 下午07:11:02* 说明 AVI视频采集 解码 可对多种格式音频视频进行解码编码 http://blog.xuggle.com/* 说明 JMF和opencv对各种视频编码格式的 不给力 学习AVIFrameCollector.java进行对xuggler简单封装使用* 说明 不需要有安装JMF 但是需要导入xuggle-xuggler-5.4.jar 和 slf4j库*/public class AVIFrameCollectorOnXuggle extends FrameCollector implementsControllerListener {private int step 1;IContainer container null;IStreamCoder videoCoder null;IPacket packet;long firstTimestampInStream Global.NO_PTS;long systemClockStartTime 0;int videoStreamId -1;String filename;IVideoResampler resampler null;Overridepublic void close() {if (videoCoder ! null) {videoCoder.close();videoCoder null;}if (container ! null) {container.close();container null;}}Overridepublic BufferedImage getCurrentFrame() {BufferedImage javaImage null;while (container.readNextPacket(packet) 0) {/** Now we have a packet, lets see if it belongs to our video stream*/if (packet.getStreamIndex() videoStreamId) {/** We allocate a new picture to get the data out of Xuggler*/IVideoPicture picture IVideoPicture.make(videoCoder.getPixelType(), videoCoder.getWidth(), videoCoder.getHeight());int offset 0;while (offset packet.getSize()) {/** Now, we decode the video, checking for any errors.*/int bytesDecoded videoCoder.decodeVideo(picture, packet,offset);if (bytesDecoded 0)throw new RuntimeException(got error decoding video in: filename);offset bytesDecoded;/** Some decoders will consume data in a packet, but will not* be able to construct a full video picture yet. Therefore* you should always check if you got a complete picture* from the decoder*/if (picture.isComplete()) {IVideoPicture newPic picture;/** If the resampler is not null, that means we didnt* get the video in BGR24 format and need to convert it* into BGR24 format.*/if (resampler ! null) {// we must resamplenewPic IVideoPicture.make(resampler.getOutputPixelFormat(),picture.getWidth(), picture.getHeight());if (resampler.resample(newPic, picture) 0)throw new RuntimeException(could not resample video from: filename);}if (newPic.getPixelType() ! IPixelFormat.Type.BGR24)throw new RuntimeException(could not decode video as BGR 24 bit data in: filename);/*** We could just display the images as quickly as we* decode them, but it turns out we can decode a lot* faster than you think.** So instead, the following code does a poor-mans* version of trying to match up the frame-rate* requested for each IVideoPicture with the system* clock time on your computer.** Remember that all Xuggler IAudioSamples and* IVideoPicture objects always give timestamps in* Microseconds, relative to the first decoded item. If* instead you used the packet timestamps, they can be* in different units depending on your IContainer, and* IStream and things can get hairy quickly.*/if (firstTimestampInStream Global.NO_PTS) {// This is our first time throughfirstTimestampInStream picture.getTimeStamp();// get the starting clock time so we can hold up// frames// until the right time.systemClockStartTime System.currentTimeMillis();} else {long systemClockCurrentTime System.currentTimeMillis();long millisecondsClockTimeSinceStartofVideo systemClockCurrentTime- systemClockStartTime;// compute how long for this frame since the first// frame in the// stream.// remember that IVideoPicture and IAudioSamples// timestamps are// always in MICROSECONDS,// so we divide by 1000 to get milliseconds.long millisecondsStreamTimeSinceStartOfVideo (picture.getTimeStamp() - firstTimestampInStream) / 1000;final long millisecondsTolerance 50; // and we// give// ourselfs// 50 ms of// tolerancefinal long millisecondsToSleep (millisecondsStreamTimeSinceStartOfVideo - (millisecondsClockTimeSinceStartofVideo millisecondsTolerance));if (millisecondsToSleep 0) {try {Thread.sleep(millisecondsToSleep);} catch (InterruptedException e) {// we might get this when the user closes// the dialog box, so// just return from the method.return null;}}}// And finally, convert the BGR24 to an Java buffered// imagejavaImage Utils.videoPictureToImage(newPic);return javaImage;}}} else {/** This packet isnt part of our video stream, so we just* silently drop it.*/do {} while (false);}}return javaImage;}Overridepublic FrameCollectorMode getMode() {return FrameCollectorMode.AVI_FILE;}/*** * 使用用户定义的连接参数打开AVI视频文件。* ** param fileURL* AVI视频文件的地址* param strStep* 指定avi文件的播放速度即每次跳帧的步进,调用时请注意给定的字符串要可以转换为整型。 1为正常速度2为两倍速度....* return true如果成功打开否则返回false* since 1.0*/Overridepublic boolean open(String fileURL, String strStep) {// fileURLfile:/F:/组件和项目/图像质量诊断工程/vedio/视频文件/亮度1.avi;// 打开AVI视频文件if (fileURL null) {return open();}if ((fileURL.substring(0, 6)).equals(file:/)) {fileURL fileURL.substring(6);// System.out.println( dfsfjasjf fileURL);}try {step Integer.parseInt(strStep);} catch (NumberFormatException ex) {step 1;}return setupPlayer(fileURL);}/*** * 通过打开对话框打开指定AVI视频文件。* ** return true如果成功打开否则返回false* since 1.0*/Overridepublic boolean open() {// 从文件对话框中选择AVI文件JFileChooser chooser new JFileChooser();chooser.setAcceptAllFileFilterUsed(false);int result chooser.showOpenDialog(null);if (result JFileChooser.CANCEL_OPTION) {return false;}File file chooser.getSelectedFile();String fileURL null;try {fileURL file.getAbsolutePath();System.out.println(fileURL);} catch (Exception e) {return false;}// 打开AVI视频文件return setupPlayer(fileURL);}Overridepublic void controllerUpdate(ControllerEvent arg0) {// TODO Auto-generated method stub}/*** * Initialize the Player object.* ** param fileURL* The selected files URL* return true if set up the player successfully, false otherwise*/private boolean setupPlayer(String filename) {this.filename filename;System.out.println(filename );// Lets make sure that we can actually convert video pixel formats.if (!IVideoResampler.isSupported(IVideoResampler.Feature.FEATURE_COLORSPACECONVERSION))throw new RuntimeException(you must install the GPL version of Xuggler (with IVideoResampler support) for this demo to work);// Create a Xuggler container objectcontainer IContainer.make();// Open up the containerif (container.open(filename, IContainer.Type.READ, null) 0)throw new IllegalArgumentException(could not open file: filename);// query how many streams the call to open foundint numStreams container.getNumStreams();// and iterate through the streams to find the first video streamfor (int i 0; i numStreams; i) {// Find the stream objectIStream stream container.getStream(i);// Get the pre-configured decoder that can decode this stream;IStreamCoder coder stream.getStreamCoder();if (coder.getCodecType() ICodec.Type.CODEC_TYPE_VIDEO) {videoStreamId i;videoCoder coder;break;}}if (videoStreamId -1)throw new RuntimeException(could not find video stream in container: filename);/** Now we have found the video stream in this file. Lets open up our* decoder so it can do work.*/if (videoCoder.open() 0)throw new RuntimeException(could not open video decoder for container: filename);if (videoCoder.getPixelType() ! IPixelFormat.Type.BGR24) {// if this stream is not in BGR24, were going to need to// convert it. The VideoResampler does that for us.resampler IVideoResampler.make(videoCoder.getWidth(), videoCoder.getHeight(), IPixelFormat.Type.BGR24, videoCoder.getWidth(), videoCoder.getHeight(), videoCoder.getPixelType());if (resampler null)throw new RuntimeException(could not create color space resampler for: filename);}/** Now, we start walking through the container looking at each packet.*/packet IPacket.make();return true;}}