MediaCorder启动失败-19和摄像机错误100

Question

我正在开发一个应用程序来录制视频。

我在Nexus 4和Sony Ericsson mini pro上运行良好的应用程序中得到了这段代码，但当我在其他设备上测试时，比如Archos 80G9和Jiayu G3ST时，应用程序给出了以下错误

“MediaRecorder启动失败-19”

private boolean prepareVideoRecorder() {
    /** ADDED Sony Ericsson Stoped */
    try {
        mCamera.setPreviewDisplay(null);
    } catch (java.io.IOException ioe) {
        Log.d(TAG,
                    "IOException nullifying preview display: "
                            + ioe.getMessage());
    }
    mCamera.stopPreview();

    mMediaRecorder = new MediaRecorder();
    // Step 1: Unlock and set camera to MediaRecorder
    mCamera.unlock();
    mMediaRecorder.setCamera(mCamera);

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

    // Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
    CameraBackFront cm = new CameraBackFront();
    int id = cm.getBackCameraId();
    if (qualityString().equalsIgnoreCase("Low")) {
        mMediaRecorder.setProfile(CamcorderProfile.get(id,
                    CamcorderProfile.QUALITY_LOW));
    } else if (qualityString().equalsIgnoreCase("High")) {
        mMediaRecorder.setProfile(CamcorderProfile.get(id,
                    CamcorderProfile.QUALITY_HIGH));
    } else if (qualityString().equalsIgnoreCase("480p")) {
        mMediaRecorder.setProfile(CamcorderProfile.get(id,
                    CamcorderProfile.QUALITY_480P));
    } else if (qualityString().equalsIgnoreCase("720p")) {
        mMediaRecorder.setProfile(CamcorderProfile.get(id,
                    CamcorderProfile.QUALITY_720P));
    } else if (qualityString().equalsIgnoreCase("1080p")) {
        try {
            mMediaRecorder.setProfile(CamcorderProfile.get(id,
                        CamcorderProfile.QUALITY_1080P));
        } catch (Exception e) {
            mMediaRecorder.setProfile(CamcorderProfile.get(id,
                        CamcorderProfile.QUALITY_HIGH));
        }
    } else {
        mMediaRecorder.setProfile(CamcorderProfile.get(0,
                    CamcorderProfile.QUALITY_HIGH));
    }

    // Step 4: Set output file
    mMediaRecorder.setOutputFile(getOutputMediaFile(MEDIA_TYPE_VIDEO)
                .toString());
    /** ADD FILE NAME */
    addFileNameDB();
    // Step 5: Set the preview output
    mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface());

    // Step 6: Prepare configured MediaRecorder
    try {
        mMediaRecorder.prepare();
    } catch (IllegalStateException e) {
        Log.d(TAG,
                    "IllegalStateException preparing MediaRecorder: "
                            + e.getMessage());
        releaseMediaRecorder();
        return false;
    } catch (IOException e) {
        Log.d(TAG, "IOException preparing MediaRecorder: " + e.getMessage());
        releaseMediaRecorder();
        return false;
    }

    return true;
}

我试过：

• 在mediaCorder.start()之前放置thread.sleep（1000）；但这会给我一个错误。
• 在development.android.com中放置默认的CameraPreview。
• 我的应用程序与自定义CameraPreview一起工作，该CameraPreview可调整预览的大小。
• 我使用camcorderprofile.hasprofile(camcorderprofile.quality_720p)获取相机质量，因为这总是使用在电话上工作的配置文件。

Answer 1

最后我解决了我的问题

...
releaseCamera();
if(prepareVideoRecorder){
   ...
}

prepareVideoRecorder（）之前。

并在prepareVideoRecorder中添加一个新的Camera实例。

public void prepareVideoRecorder(){
   mCamera = getCameraInstance();
   ...
}

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