Mediarecorder start fehlgeschlagen -19

Ich Stand vor dem gleichen proble während der video-Aufnahme, und ich löste es, indem Sie diese für die Videoaufzeichnung

/**
 * Start video recording by cleaning the old camera preview
 */
private void startVideoRecorder() {
    //THIS IS NEEDED BECAUSE THE GLASS CURRENTLY THROWS AN ERROR OF
    //"MediaRecorder start failed: -19"
    //THIS WONT BE NEEDED INCASE OF PHONE AND TABLET
    //This causes crash in glass kitkat version so remove it
    //try {
    //mCamera.setPreviewDisplay(null);
    //} catch (java.io.IOException ioe) {
    //Log.d(TAG,
    //"IOException nullifying preview display: "
    //+ ioe.getMessage());
    //}
    //mCamera.stopPreview();
    //mCamera.unlock();
    recorder = new MediaRecorder();
    //Let's initRecorder so we can record again
    initRecorder();
}

/**
 * Initialize video recorder to record video
 */
private void initRecorder() {
    try {
        File dir = new File(folderPath);
        if (!dir.exists()) {
            dir.mkdirs();
        }
        mCamera.stopPreview();
        mCamera.unlock();
        videofile = new File(dir, fileName + ".mp4");
        recorder.setCamera(mCamera);

        //Step 2: Set sources
        recorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
        recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

        //Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
        recorder.setProfile(CamcorderProfile
                .get(CamcorderProfile.QUALITY_HIGH));

        //Step 4: Set output file
        recorder.setOutputFile(videofile.getAbsolutePath());
        //Step 5: Set the preview output
        recorder.setPreviewDisplay(mPreview.getHolder().getSurface());
        //Step 6: Prepare configured MediaRecorder
        recorder.setMaxDuration(video_duration * 1000);
        recorder.setOnInfoListener(new OnInfoListener() {

            @Override
            public void onInfo(MediaRecorder mr, int what, int extra) {
                if (what == MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED) {

                    mCamera.stopPreview();
                    releaseMediaRecorder();

                    /*
                     * initiate media scan and put the new things into the
                     * path array to make the scanner aware of the location
                     * and the files you want to see
                     */MediaScannerConnection.scanFile(
                            CuxtomCamActivity.this,
                            new String[] { videofile.getPath() }, null,
                            null);

                    Intent intent = new Intent();
                    intent.putExtra(CuxtomIntent.FILE_PATH,
                            videofile.getPath());
                    intent.putExtra(CuxtomIntent.FILE_TYPE, FILE_TYPE.VIDEO);
                    setResult(RESULT_OK, intent);
                    finish();
                }

            }
        });
        recorder.prepare();
        recorder.start();
    } catch (Exception e) {
        Log.e("Error Stating CuXtom Camera", e.getMessage());
    }
}
private void releaseMediaRecorder() {
    if (recorder != null) {
        recorder.reset(); //clear recorder configuration
        recorder.release(); //release the recorder object
        recorder = null;
    }
}

Details zu erkennen, wie eine Kamera tatsächlich in die Praxis umgesetzt finden Open-Source-Cuxtom Cam

InformationsquelleAutor Sheraz Ahmad Khilji

Dieser code war für mich (gefunden hier)

mCamera.unlock(); //maybe not for your activity flow

//1st. Initial state
mProfile = CamcorderProfile.get( CamcorderProfile.QUALITY_HIGH );
mMediaRecorder = new MediaRecorder();
mMediaRecorder.setCamera( mCamera );

//2nd. Initialized state
mMediaRecorder.setAudioSource( MediaRecorder.AudioSource.CAMCORDER );
mMediaRecorder.setVideoSource( MediaRecorder.VideoSource.CAMERA );

//3rd. config
mMediaRecorder.setOutputFormat( mProfile.fileFormat );
mMediaRecorder.setAudioEncoder( mProfile.audioCodec );
mMediaRecorder.setVideoEncoder( mProfile.videoCodec );
mMediaRecorder.setOutputFile( "/sdcard/FBVideo.3gp" );
mMediaRecorder.setVideoSize( mProfile.videoFrameWidth, mProfile.videoFrameHeight );
mMediaRecorder.setVideoFrameRate( mProfile.videoFrameRate );
mMediaRecorder.setVideoEncodingBitRate( mProfile.videoBitRate );
mMediaRecorder.setAudioEncodingBitRate( mProfile.audioBitRate );
mMediaRecorder.setAudioChannels( mProfile.audioChannels );
mMediaRecorder.setAudioSamplingRate( mProfile.audioSampleRate );
mMediaRecorder.setPreviewDisplay( mHolder.getSurface() );

try {
    mMediaRecorder.prepare();
    mMediaRecorder.start();
} catch ( IllegalStateException e ) {
    e.printStackTrace();
} catch ( IOException e ) {
    e.printStackTrace();
}

InformationsquelleAutor Jonas Borggren