Camera issue with Motorola DROID RAZR When I recording the video

问题

I have tested my application on various mobile phones. My applications main functionality is taking pictures and recording video through the phones camera. I didn't face an issue on most of the mobile phones, but I did face this issue on Motorola DROID RAZR. My application works fine when i take a picture. But I'm facing an issue when I record a video. When I record a video, I get a blank screen. There is no preview showing on the mobile screen. I don't why its happening, but on most of the mobile phones its working fine. And taking picture working fine on this phone (the droid razr).

Motorola DROID RAZR configuration,

OPERATING SYSTEM : Android v2.3.5.
CAMERA : HD camera, 8MP.
PROCESSOR : TI OMAP4430

Here is my code,

Camera camera = Camera.open();
Parameters params = camera.getParameters();
camera.setDisplayOrientation(90);
camera.setParameters(params);               
camera.setDisplayOrientation(90);

MediaRecorder recorder = new MediaRecorder();
recorder.setCamera(camera);
recorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
recorder.setVideoSize(640, 480);
recorder.setMaxDuration(25000);
recorder.setOrientationHint(90);

Update:

I have tested this application on Motorola Droid Razr emulator. I got the following exception,

MediaRecorder(430): prepare failed: -17
System.err(430): java.io.IOException: prepare failed.
System.err(430):    at android.media.MediaRecorder._prepare(Native Method)
System.err(430):    at android.media.MediaRecorder.prepare(MediaRecorder.java:590)

But I didn't get this exception on my other emulator. How to resolve this issue?

回答1:

Finally I found the solution. Below code works well on all devices. ;)

        Holder holder = getHolder();
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        Camera camera = Camera.open();
        try {
            camera.setPreviewDisplay(holder);
            camera.startPreview();
        } catch (IOException e) {
            Log.e(TAG, e.getMessage());
            e.printStackTrace();
        }

        camera.unlock();
        MediaRecorder recorder = new MediaRecorder();
        recorder.setCamera(camera);
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        recorder.setVideoSize(640, 480);
        recorder.setVideoFrameRate(20);
        recorder.setVideoEncodingBitRate(3000000);
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
        recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);

        try {

            String videopath = File.createTempFile("video", ".mp4")
                    .getAbsolutePath();

            recorder.setOutputFile(videopath);

        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {           
            e.printStackTrace();
        }

        recorder.setPreviewDisplay(holder.getSurface());

回答2:

It appears this device does not support MediaRecorder.setOrientationHint(). Try commenting out that line. mMediaRecorder.setOrientationHint(90)

来源：https://stackoverflow.com/questions/9770986/camera-issue-with-motorola-droid-razr-when-i-recording-the-video

标签

android

android-camera

video-recording

motorola-droid