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如何设置MediaRecorder才能获得最佳的视频质量效果？

发布于 2024-11-08 13:57:29 字数 203 浏览 2 评论 0原文

请问各位，在不考虑手机物理限制的情况下，如何设置MediaRecorder中的参数才能通过编码获得最佳的视频录制效果？或者我的 MediaRecorder 编码导致视图小失真是否有任何影响？

如果你们中的一些人可能猜测不清楚的参数，我实际上是使用首选项设置一些参数。我错过了哪些可能有助于改进视频编码过程的参数，例如：帧速率

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平定天下 2024-11-15 13:57:29

根据 API 级别，您可能想要使用或不使用现有的配置文件。

没有配置文件：

recorder.setVideoSize(640, 480);
recorder.setVideoFrameRate(16); //might be auto-determined due to lighting
recorder.setVideoEncodingBitRate(3000000);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);// MPEG_4_SP
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

或者如果您想使用现有的配置文件

CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
recorder.setProfile(cpHigh);

请注意，您不能同时使用这两个选项，因为您会收到错误或您的准备将无法工作，

因为并非所有 Android API 和/或设备都支持相同的值，您必须查询每个设备的最大值或找到适用于任何地方的东西。

Depending on the API level you may want to use existing profiles or not.

Without profiles:

recorder.setVideoSize(640, 480);
recorder.setVideoFrameRate(16); //might be auto-determined due to lighting
recorder.setVideoEncodingBitRate(3000000);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);// MPEG_4_SP
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

Or if you want to use existing profiles

CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
recorder.setProfile(cpHigh);

Please note that you cannot have both options together as you will get errors or your prepare will not work

As not all the Android API and/or devices support the same values you will either have to query the maximum values per device or find something that works everywhere.

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谈场末日恋爱 2024-11-15 13:57:29

虽然这个问题很老了，但我想指出我用来录制高清质量视频的组合。

使用下面的代码组合来实现高清质量的视频。

CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);                    
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);                        
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);                        
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mMediaRecorder.setVideoSize(DISPLAY_WIDTH, DISPLAY_HEIGHT);                    
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);                    
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);                    
mMediaRecorder.setVideoEncodingBitRate(cpHigh.videoBitRate);                    
mMediaRecorder.setVideoFrameRate(cpHigh.videoFrameRate);
int rotation = mWindowManager.getDefaultDisplay().getRotation();
int orientation = ORIENTATIONS.get(rotation + 90);
mMediaRecorder.setOrientationHint(orientation);

使用下面的代码获取 DISPLAY_HEIGHT,DISPLAY_WIDTH

DisplayMetrics metrics = new DisplayMetrics();      
mWindowManager.getDefaultDisplay().getMetrics(metrics);          
DISPLAY_WIDTH = metrics.widthPixels;
DISPLAY_HEIGHT = metrics.heightPixels;

定义 ORIENTATIONS 如下所示

public static final SparseIntArray ORIENTATIONS = new SparseIntArray();
static {
    ORIENTATIONS.append(Surface.ROTATION_0, 90);
    ORIENTATIONS.append(Surface.ROTATION_90, 0);
    ORIENTATIONS.append(Surface.ROTATION_180, 270);
    ORIENTATIONS.append(Surface.ROTATION_270, 180);
}

希望它有帮助。

Although the question is quite old, i would like to to point out the combination i used to record the video of HD quality.

Use below combination of the code to achieve HD quality video.

CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);                    
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);                        
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);                        
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mMediaRecorder.setVideoSize(DISPLAY_WIDTH, DISPLAY_HEIGHT);                    
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);                    
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);                    
mMediaRecorder.setVideoEncodingBitRate(cpHigh.videoBitRate);                    
mMediaRecorder.setVideoFrameRate(cpHigh.videoFrameRate);
int rotation = mWindowManager.getDefaultDisplay().getRotation();
int orientation = ORIENTATIONS.get(rotation + 90);
mMediaRecorder.setOrientationHint(orientation);

Use below code to get the DISPLAY_HEIGHT,DISPLAY_WIDTH

DisplayMetrics metrics = new DisplayMetrics();      
mWindowManager.getDefaultDisplay().getMetrics(metrics);          
DISPLAY_WIDTH = metrics.widthPixels;
DISPLAY_HEIGHT = metrics.heightPixels;

Define ORIENTATIONS as shown below

public static final SparseIntArray ORIENTATIONS = new SparseIntArray();
static {
    ORIENTATIONS.append(Surface.ROTATION_0, 90);
    ORIENTATIONS.append(Surface.ROTATION_90, 0);
    ORIENTATIONS.append(Surface.ROTATION_180, 270);
    ORIENTATIONS.append(Surface.ROTATION_270, 180);
}

Hope it helps.

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