Question

I am using the media recorder class for recording video, I initialize the recorder with following properties,

    recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);

    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);

But the quality of video is not as same as video I shoot over native android camera, my video recorded using media recorder is of poor quality as compared to the native one, how can I improve the video quality.

If any one knows me help me out.Thanks

Answer 1

Finally I found the code to record high quality video in android 2.1 by setting videEncodingBitRate , AudioEncodingBitRate, AudioSamplingRate …etc. Using this method you can set the properties for video whatever you want to provide high quality video.

For setting high quality and low quality parameter refer this page,

http://www.andgps.com/20110410/camcorderprofile-predefined-camcorder-profile-settings-for-camcorder-applications

The code i used with base version android 2.1 to produce high quality video is shown below,

    recorder = new MediaRecorder();
    Method[] methods = recorder.getClass().getMethods();
    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    recorder.setVideoFrameRate(24);
    recorder.setVideoSize(720, 480);

    for (Method method: methods){
    try{
        if (method.getName().equals("setAudioChannels")){
                method.invoke(recorder, String.format("audio-param-number-of-channels=%d", 1));
        } 
        else if(method.getName().equals("setAudioEncodingBitRate")){
                method.invoke(recorder,12200);
            }
        else if(method.getName().equals("setVideoEncodingBitRate")){
            method.invoke(recorder, 3000000);
        }
        else if(method.getName().equals("setAudioSamplingRate")){
            method.invoke(recorder,8000);
        }
        else if(method.getName().equals("setVideoFrameRate")){
            method.invoke(recorder,24);
        }
    }catch (IllegalArgumentException e) {

        e.printStackTrace();
    } catch (IllegalAccessException e) {

        e.printStackTrace();
    } catch (InvocationTargetException e) {

        e.printStackTrace();
    }
    }

    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);

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