最近项目要求能对视频和语音进行同步合成.docx

最近项目要求能对视频和语音进行同步合成，以及对视频进行画面与语音的分离功能，由于没有接触过这类东西，所以想从最基础做起，于是在网上找到sun公司开源的jmf架构，看到网上也有不少小例子，就开始对安装jmf并配置了开发环境，将小例子粘到自己的新建工程下，结果发现不好用，没办法自己也顺手写了一个都发生同样的问题，希望有经验的朋友能够帮助解决一下。 我现在干脆就用网上的一个例子来说明问题，实现的功能是，利用点击拍照按钮能，启动摄像头并将捕捉摄像头的画面将生成图片保存到物理硬盘中，代码如下：Java代码1. packagecom.creatplay;2. importjava.awt.BorderLayout;3. importjava.awt.Color;4. importjava.awt.Component;5. importjava.awt.Dimension;6. importjava.awt.Graphics;7. importjava.awt.Graphics2D;8. importjava.awt.Image;9. importjava.awt.Panel;10. importjava.awt.Rectangle;11. importjava.awt.event.ActionEvent;12. importjava.awt.event.ActionListener;13. importjava.awt.event.WindowAdapter;14. importjava.awt.event.WindowEvent;15. importjava.awt.image.BufferedImage;16. importjava.io.FileNotFoundException;17. importjava.io.FileOutputStream;18. importjava.io.IOException;19. 20. importjavax.media.Buffer;21. importjavax.media.CannotRealizeException;22. importjavax.media.CaptureDeviceInfo;23. importjavax.media.CaptureDeviceManager;24. importjavax.media.Manager;25. importjavax.media.MediaLocator;26. importjavax.media.NoPlayerException;27. importjavax.media.Player;28. importjavax.media.control.FrameGrabbingControl;29. importjavax.media.format.VideoFormat;30. importjavax.media.util.BufferToImage;31. importjavax.swing.JButton;32. importjavax.swing.JFrame;33. importjavax.swing.JPanel;34. 35. importcom.sun.image.codec.jpeg.ImageFormatException;36. importcom.sun.image.codec.jpeg.JPEGCodec;37. importcom.sun.image.codec.jpeg.JPEGEncodeParam;38. importcom.sun.image.codec.jpeg.JPEGImageEncoder;39. 40. 41. publicclassFirstCaptureextendsJPanelimplementsActionListener42. 43. privateCaptureDeviceInfocaptureDeviceInfo=null;44. privateMediaLocatormediaLocator=null;45. privatestaticPlayerplayer=null;46. privateImagePanelimagePanel=null;47. privateJButtoncapture;48. privateBufferbuffer=null;49. privateVideoFormatvideoFormat=null;50. privateBufferToImagebufferToImage=null;51. privateImageimage=null;52. 53. publicFirstCapture()54. 55. 56. 57. setLayout(newBorderLayout();58. setSize(320,550);59. Stringstr=vfw:MicrosoftWDMImageCapture(Win32):0;60. captureDeviceInfo=CaptureDeviceManager.getDevice(str);61. /MediaLocatormediaLocator=captureDeviceInfo.getLocator();62. mediaLocator=newMediaLocator(vfw:/0);63. imagePanel=newImagePanel();64. capture=newJButton(拍照);65. capture.addActionListener(this);66. try67. player=Manager.createRealizedPlayer(mediaLocator);68. player.start();69. Componentcomp;70. Componentcomp1;71. if(comp=player.getVisualComponent()!=null)72. add(comp,BorderLayout.NORTH);73. /if(comp1=player.getControlPanelComponent()!=null)74. /add(comp1,BorderLayout.CENTER);75. catch(NoPlayerExceptione)76. /TODOAuto-generatedcatchblock77. e.printStackTrace();78. catch(CannotRealizeExceptione)79. /TODOAuto-generatedcatchblock80. e.printStackTrace();81. catch(IOExceptione)82. /TODOAuto-generatedcatchblock83. e.printStackTrace();84. 85. add(imagePanel,BorderLayout.SOUTH);86. add(capture,BorderLayout.CENTER);87. 88. 89. Override90. publicvoidprint(Graphicsg)91. /TODOAuto-generatedmethodstub92. super.print(g);93. g.setColor(newColor(255,0,0);94. g.drawLine(0,0,100,100);95. 96. 97. publicstaticvoidmain(Stringargs)98. /TODOAuto-generatedmethodstub99. JFramef=newJFrame(FirstCapture);100. FirstCapturecf=newFirstCapture();101. 102. f.addWindowListener(newWindowAdapter()103. publicvoidwindowClosing(WindowEvente)104. player.close();105. System.exit(0););106. 107. f.add(Center,cf);108. f.pack();109. f.setSize(newDimension(320,550);110. f.setVisible(true);111. 112. 113. publicvoidactionPerformed(ActionEvente)114. /TODOAuto-generatedmethodstub115. FrameGrabbingControlfgc=(FrameGrabbingControl)player.getControl(javax.media.control.FrameGrabbingControl);116. buffer=fgc.grabFrame();117. bufferToImage=newBufferToImage(VideoFormat)buffer.getFormat();118. image=bufferToImage.createImage(buffer);119. imagePanel.setImage(image);120. saveImage(image,D:/test.jpg);121. 122. publicstaticvoidsaveImage(Imageimage,Stringpath)123. 124. BufferedImagebi=newBufferedImage(image.getWidth(null),image.getHeight(null),BufferedImage.TYPE_INT_RGB);125. Graphics2Dg2=bi.createGraphics();126. g2.drawImage(image,null,null);127. FileOutputStreamfos=null;128. try129. fos=newFileOutputStream(path);130. 131. catch(FileNotFoundExceptione)132. /TODOAuto-generatedcatchblock133. e.printStackTrace();134. 135. JPEGImageEncoderje=JPEGCodec.createJPEGEncoder(fos);136. JPEGEncodeParamjp=je.getDefaultJPEGEncodeParam(bi);137. jp.setQuality(0.5f,false);138. je.setJPEGEncodeParam(jp);139. try140. je.encode(bi);141. fos.close();142. catch(ImageFormatExceptione)143. /TODOAuto-generatedcatchblock144. e.printStackTrace();145. catch(IOExceptione)146. /TODOAuto-generatedcatchblock147. e.printStackTrace();148. 149. 150. 151. classImagePanelextendsPanel152. 153. publicImagemyimg=null;154. 155. publicImagePanel()156. 157. setLayout(null);158. setSize(320,240);159. 160. 161. publicvoidsetImage(Imageimg)162. 163. this.myimg=img;164. repaint();165. 166. 167. publicvoidpaint(Graphicsg)168. 169. if(myimg!=null)170. 171. g.drawImage(myimg,0,0,this);172. 173. 174. 175. 176. 177. 加载报出的异常为：javax.media.NoPlayerException: Cannot find a Player for :vfw:/0 at javax.media.Manager.createPlayerForContent(Manager.java:1412) at javax.media.Manager.createPlayer(Manager.java:417) at javax.media.Manager.createRealizedPlayer(Manager.java:553) at com.creatplay.FirstCapture.(FirstCapture.java:67) at com.creatplay.FirstCapture.main(FirstCapture.java:100)继续运行点击“拍照”出现的一场为：Exception in thread AWT-EventQueue-0 java.lang.NullPointerException at com.creatplay.FirstCapture$1.windowClosing(FirstCapture.java:104) at java.awt.WcessWindowEvent(Unknown Source) at javax.swing.JFcessWindowEvent(Unknown Source) at java.awt.Window.p