mediarecorder.setVideoSize（）失败，最大分辨率 [英] mediarecorder.setVideoSize() fails with maximum resolution

问题描述

我试图找到

final Parameters p = this.camera.getParameters();
List<Size> previewSizes=p.getSupportedPreviewSizes();

和

this.mediaRecorder.setVideoSize(previewSizes.get(0).width, previewSizes.get(0).height);

我以前在风景模式拍摄的视频。

I used to record video in Landscape mode.

MediaRecorder 无法录制视频这个高的分辨率。

MediaRecorder fails to record video with this high resolution.

当我尝试用更少的分辨率，它正在录像。

When I try with less resolution, it is recording.

是否与屏幕显示尺寸和视频尺寸我们设置有问题吗？

Is there a problem with screen display size and video size we are setting ?

推荐答案

尝试这样的事情

getBest previewSize（）来确定基于提供的宽度和高度的最佳分辨率。该显然是缺少主mediarecorder和相机设置的细节，但你可以很容易地找到他们，你可能已经这样做了。

getBestPreviewSize () will determine best possible resolution based on provided width and height. The is obviously missing the main mediarecorder and camera setup details but you can find them quite easily and you've probably already done that

...
    Camera.size size = getBestPreviewSize(720,480, mCamera.getParameters());

    mMediaRecorder.setVideoSize(size.width,size.height);
    mMediaRecorder.setVideoFrameRate(15);
    mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
    mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
...

  private Camera.Size getBestPreviewSize(int width, int height, Camera.Parameters parameters) {
    Camera.Size result=null;

    for (Camera.Size size : parameters.getSupportedPreviewSizes()) {
        if (size.width<=width && size.height<=height) {
            if (result==null) {
                result=size;
            } else {
                int resultArea=result.width*result.height;
                int newArea=size.width*size.height;

                if (newArea>resultArea) {
                    result=size;
                }
            }
        }
    }
    return(result);
}  

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