使用 Java 和 jmf 从网络摄像头捕获实时视频
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/17585917/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Capture live video from webcam using Java an jmf
提问by balaraju
For capture the live video from web using java and jmf i have written the below code , I plugin the usb webcam also but it gives java.util.NoSuchElementException
anyone please help me
为了使用 java 和 jmf 从网络捕获实时视频，我编写了以下代码，我也插入了 USB 网络摄像头，但它给了java.util.NoSuchElementException
任何人请帮助我
import java.util.Vector;
import javax.media.*;
import javax.media.format.AudioFormat;
import javax.media.format.VideoFormat;
import javax.media.protocol.DataSource;
import javax.media.CaptureDeviceInfo;
import javax.media.format.YUVFormat;
import javax.media.protocol.FileTypeDescriptor;
public class CamRecorder {
static VideoFormat videoFormat;
static AudioFormat audioFormat;
static CaptureDeviceInfo videoDevice;
static CaptureDeviceInfo audioDevice;
public static void main(String[] args) {
try {
Vector deviceList = CaptureDeviceManager.getDeviceList(new YUVFormat()); //get all media devices
CaptureDeviceInfo device = (CaptureDeviceInfo) deviceList.firstElement(); //in this computer the only capture device is in=built webcam stays at 0th position
Format[] formats = device.getFormats(); //get all formats
for (int x = 0; x < formats.length; x++) {
if (formats[x] != null && formats[x] instanceof VideoFormat) {
videoFormat = (VideoFormat) formats[x]; //take the video format
videoDevice = device;
}
if (formats[x] != null && formats[x] instanceof AudioFormat) {
audioFormat = (AudioFormat) formats[x]; //take the audio format
//audioDevice = device;
}
}
//create data sources
DataSource videoDataSource = Manager.createDataSource(device.getLocator());
deviceList = CaptureDeviceManager.getDeviceList(new AudioFormat(null)); //get all media devices
device = (CaptureDeviceInfo) deviceList.firstElement();
DataSource audioDataSource=Manager.createDataSource(device.getLocator());
DataSource[] dArray=new DataSource[2];
dArray[0]=videoDataSource;
dArray[1]=audioDataSource;
DataSource mixedDataSource = Manager.createMergingDataSource(dArray);
//format for output
Format[] outputFormats=new Format[2];
outputFormats[0]=new VideoFormat(VideoFormat.YUV);
outputFormats[1]=new AudioFormat(AudioFormat.LINEAR);
//output type
FileTypeDescriptor outputType=new FileTypeDescriptor(FileTypeDescriptor.MSVIDEO);
//settingup Processor
ProcessorModel processorModel=new ProcessorModel(mixedDataSource, outputFormats, outputType);
Processor processor=Manager.createRealizedProcessor(processorModel);
//settingup sink
DataSource outputDataSource=processor.getDataOutput();
MediaLocator destination=new MediaLocator("file:.\testcam.avi");
DataSink dataSink=Manager.createDataSink(outputDataSource, destination);
dataSink.open();
//start sink + processor
Thread.sleep(4000);
dataSink.start();
processor.start();
Thread.sleep(4000);
dataSink.close();
processor.stop();
processor.close();
} catch (Exception ex) {
System.out.println(ex);
}
}
}
}
回答by balaraju
yes, it is perfect but install the jmf and set the path and class path properly .
是的，它是完美的，但是安装 jmf 并正确设置路径和类路径。
jmf installation: http://www.stierlen2.homepage.t-online.de/modellbau/3dscanner/jmf_installation.htm
jmf 安装：http: //www.stierlen2.homepage.t-online.de/modellbau/3dscanner/jmf_installation.htm
