spydroid-android測試在android4.0系統上報錯

1. start failed: -19

1. 01-06 14:04:07.790: V/MediaRecorder(13280): prepare
2. 01-06 14:04:07.790: V/IMediaRecorder(13280): prepare
3. 01-06 14:04:07.800: V/MediaRecorder(13280): start
4. 01-06 14:04:07.800: V/IMediaRecorder(13280): start
5. 01-06 14:04:08.190: E/MediaRecorder(13280): start failed: -19
6. 01-06 14:04:08.190: W/System.err(13280): java.lang.RuntimeException: start failed.
7. 01-06 14:04:08.200: W/System.err(13280): at android.media.MediaRecorder.start(Native Method)
8. 01-06 14:04:08.200: W/System.err(13280): at com.yousee.videocapturedemo.VideoCapturePlus$2.onClick(VideoCapturePlus.java:145)
9. 01-06 14:04:08.200: W/System.err(13280): at android.view.View.performClick(View.java:3515)
10. 01-06 14:04:08.200: W/System.err(13280): at android.view.View$PerformClick.run(View.java:14144)
11. 01-06 14:04:08.200: W/System.err(13280): at android.os.Handler.handleCallback(Handler.java:605)
12. 01-06 14:04:08.200: W/System.err(13280): at android.os.Handler.dispatchMessage(Handler.java:92)
13. 01-06 14:04:08.200: W/System.err(13280): at android.os.Looper.loop(Looper.java:148)
14. 01-06 14:04:08.200: W/System.err(13280): at android.app.ActivityThread.main(ActivityThread.java:4503)
15. 01-06 14:04:08.200: W/System.err(13280): at java.lang.reflect.Method.invokeNative(Native Method)
16. 01-06 14:04:08.200: W/System.err(13280): at java.lang.reflect.Method.invoke(Method.java:511)
17. 01-06 14:04:08.200: W/System.err(13280): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
18. 01-06 14:04:08.200: W/System.err(13280): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
19. 01-06 14:04:08.200: W/System.err(13280): at dalvik.system.NativeStart.main(Native Method)

1. .....
2. mMediaRecorder=new MediaRecorder();
3. //設置視頻源
4. mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
5. //設置音頻源
6. mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
7. //設置文件輸出格式
8. mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
9. //設置視頻編碼方式
10. mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
11. //設置音頻編碼方式
12. mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
13. //設置視頻高和寬,註意文檔的說明:
14. //Must be called after setVideoSource().
15. //Call this after setOutFormat() but before prepare().
16. //設置錄制的視頻幀率,註意文檔的說明:
17. //Must be called after setVideoSource().
18. //Call this after setOutFormat() but before prepare().
19. mMediaRecorder.setVideoFrameRate(20);
20. //設置預覽畫面
21. mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
22. //設置輸出路徑
23. mMediaRecorder.setOutputFile
24. (Environment.getExternalStorageDirectory()+File.separator+System.currentTimeMillis()+".mp4");
25. .....
26. mediaRecorder.prepare();
27. mediaRecorder.start();
28. .....

相同的程序在Android2.3平臺上正常運行，在Android4.0上報錯。

解決方法：

註釋掉設置視頻幀率的語句。//mMediaRecorder.setVideoFrameRate(mQuality.framerate);

將setVideoFrameRate去掉之後，如果還出現該錯誤，可將

mMediaRecorder.setVideoSize(videoWidth, videoHeight);也註釋掉

原因：

視頻的幀率和視頻大小是需要硬件支持的，如果設置的幀率和視頻大小,如果硬件不支持就會出現錯誤。

參考：

http://stackoverflow.com/questions/11249642/mediarecorder-start-failed-19

Error處理： android.media.MediaRecorder.start(Native Method) 報錯：start failed: -19