Problem with android MediaRecorder setVideoSize()

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灰色年华
灰色年华 2021-01-04 14:28

Can android MediaRecorder capture video with resolution higher than 320*240?

When I used MediaRecorder::setVideoSize() to set

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  • 2021-01-04 14:31

    I had an issue similar to what is described here. I turned out that I had to restructure my code slightly before I could adjust the video size.

    The important thing is that setVideoSize() is called before setVideoEncoder(). I can't find this in the documentation, however it solved my problems with setting a specific video resolution. Also keep in mind that setOutputFormat() should be called before setVideoSize().

    As as side note the same is true for setVideoFrameRate(). If it is not called before setVideoEncoder() it will not have any affect.

    This was tested with Android 2.3.3

    Here is a code example:

    recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
    recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    recorder.setVideoSize(640,480);
    recorder.setVideoFrameRate(30);
    recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);       
    
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  • 2021-01-04 14:40

    First you are going to want to determine what your Camera supports. Try:

                List<String> anti = params.getSupportedAntibanding(); 
        List<String> color = params.getSupportedColorEffects();
        List<String> focus = params.getSupportedFocusModes(); 
        List<String> flash = params.getSupportedFlashModes();
        List<Size> previewSize = params.getSupportedPreviewSizes();
        List<Size> sizes = params.getSupportedPictureSizes();
        List<Integer> frameRates = params.getSupportedPreviewFrameRates();
        List<Integer> pictureFormats = params.getSupportedPictureFormats();
        List<String> scene = params.getSupportedSceneModes(); 
        List<String> white = params.getSupportedWhiteBalance();
    

    This will tell you all of the Camera's supported parameters. Second Make sure that you initialize your MediaRecorder properly see the google documentation for the order in which you need to set the MediaRecorder. Also, if your Camera.setPreviewSize and MediaRecorder.setVideoSize are different it can cause odd behavior.

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