Appears to be a problem specific to the phone's or operating system. I have now tested the above code and my more complex video recorder code on two different phones and I did not get the above issue. Unfortunately I do not know if it was the phone or os.
On Aug 3, 12:20 pm, esse <[email protected]> wrote: > For several days I have been trying to figure out an obscure problem > related to saving video. I have narrowed it down to an issue with > MediaRecorder. The problem is when you record many (15-30) videos in a > row. What happens is that at some point (>10) the BEEP sound that > occurs when you start recording (i.e. MediaRecorder.start()) stops. In > LogCat there will be an error from AudioFlinger "ERROR/AudioTrack: > AudioFlinger could not create track, status: -12". Once this has > happen you can still record as many videos as you want without > problem, BUT if you press the phones volume keys the phone will CRASH. > > The reason that I think it is related specifically to saving video is > that I can comment out all of the video related setup for the > MediaRecorder and then record only audio without any problem and > nothing else about the code/program is different. > > I have included code that creates the same issue on my phone (Samsung > Captivate running 2.2). Note that my actually video recorder code is > different and that this code is simply to share and focus on the > MediaRecorder video save issue. > > If you have experienced a similar issue please respond, if you test > this code on your phone and you don't have any problems please let me > know as I have started to think it is a phone/firmware issue. If you > have code that works and can share please do. > > Thanks, > > public class Camcorder extends Activity implements > SurfaceHolder.Callback { > MediaRecorder mRecorder; > SurfaceHolder mHolder; > SurfaceView mSurfaceView; > String mOutputFileRoot = "/sdcard/Avid_"; > String mOutputFile; > String mFileExt = ".3gp"; > Integer cnt = 0; > private boolean mRecording = false; > > /** Called when the activity is first created. */ > @Override > public void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > requestWindowFeature(Window.FEATURE_NO_TITLE); > > getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, > > WindowManager.LayoutParams.FLAG_FULLSCREEN); > > setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); > setContentView(R.layout.camcorder_preview); > > mSurfaceView = > ((SurfaceView)findViewById(R.id.camera_preview)); > mHolder = mSurfaceView.getHolder(); > mHolder.addCallback(this); > > mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); > > } > > @Override > public boolean onKeyDown(int keyCode, KeyEvent event) > { > if (keyCode == KeyEvent.KEYCODE_SEARCH) > { > if (mRecording) { > stopRecording(); > //finish(); > if(mRecorder == null){ > initMediaRecorder(); > prepareMediaRecorder(); > } > mRecording = false; > } else { > mRecording = true; > > startRecording(); > } > return true; > } > return super.onKeyDown(keyCode, event); > } > > public void surfaceCreated(SurfaceHolder holder) { > mHolder = holder; > initMediaRecorder(); > prepareMediaRecorder(); > > } > > public void surfaceChanged(SurfaceHolder holder, int format, > int width, > int height) { > } > > public void surfaceDestroyed(SurfaceHolder holder) { > if(mHolder != null) mHolder = null; > if(mSurfaceView != null) mSurfaceView = null; > } > > public void initMediaRecorder(){ > > mRecorder = new MediaRecorder(); > > mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); > mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); > > mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); > mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); > mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263); > mRecorder.setPreviewDisplay(mHolder.getSurface()); > mOutputFile = mOutputFileRoot + cnt.toString() + mFileExt; > cnt += 1; > mRecorder.setOutputFile(mOutputFile); > > } > > private void prepareMediaRecorder(){ > if (mRecorder != null) { > try { > mRecorder.prepare(); > } catch (IllegalStateException e) { > Log.e("IllegalStateException", e.toString()); > } catch (IOException e) { > Log.e("IOException", e.toString()); > } > } > } > > public void startRecording() > { > mRecorder.start(); > } > > public void stopRecording() > { > mRecorder.stop(); > mRecorder.release(); > mRecorder = null; > } > > } > > MANIFEST > > <?xml version="1.0" encoding="utf-8"?> > <manifest xmlns:android="http://schemas.android.com/apk/res/android"; > package="com.testing.camcorder" > android:versionCode="1" > android:versionName="1.0"> > <application android:icon="@drawable/icon" android:label="@string/ > app_name" > android:debuggable="true"> > <activity android:name=".Camcorder" > android:label="@string/app_name" > android:screenOrientation="landscape"> > <intent-filter> > <action android:name="android.intent.action.MAIN" /> > <category > android:name="android.intent.category.LAUNCHER" /> > </intent-filter> > </activity> > </application> > <uses-sdk android:minSdkVersion="3" /> > > <uses-permission android:name="android.permission.RECORD_AUDIO"></uses- > permission> > <uses-feature android:name="android.hardware.camera" /> > <uses-permission android:name="android.permission.CAMERA"></uses- > permission> > <uses-permission > android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses- > permission> > </manifest> > > xml layout > <?xml version="1.0" encoding="utf-8"?> > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ > android" > android:orientation="vertical" > android:layout_width="fill_parent" > android:layout_height="fill_parent"> > > <FrameLayout > > android:layout_width="fill_parent" > android:layout_height="fill_parent"> > > <SurfaceView android:id="@+id/camera_preview" > android:layout_width="fill_parent" > android:layout_height="fill_parent" > android:clickable="true" /> > > </FrameLayout> > </LinearLayout> -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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