没有音频的Android记录视频
答
您可以使用MediaRecorder不调用setAudio *就可以了。这是使用MediaRecorder我的第一次,但这个例子似乎工作:
public class CamcorderView extends SurfaceView implements
SurfaceHolder.Callback {
private SurfaceHolder mHolder;
private Camera mCamera;
private MediaRecorder mRecorder;
public CamcorderView(Context context, AttributeSet attrs) {
super(context, attrs);
mHolder = getHolder();
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mHolder.addCallback(this);
mCamera = Camera.open();
mRecorder = new MediaRecorder();
}
public void stop() {
mRecorder.stop();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
mCamera.unlock();
mRecorder.setCamera(mCamera);
mRecorder.setPreviewDisplay(mHolder.getSurface());
// You may want to change these
mRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
// You'll definitely want to change this
mRecorder.setOutputFile("/mnt/sdcard/out");
try {
mRecorder.prepare();
} catch (IllegalStateException e) {
Log.e("IllegalStateException", e.toString());
} catch (IOException e) {
Log.e("IOException", e.toString());
}
mRecorder.start();
}
}
你也可以拨打:
setVideoSize(int, int);
setVideoFrameRate(int);
答
你可以准备MediaRecorder通过从内置配置文件(CamcorderProfile)复制必需的字段。只是忽略音频设置,你应该很好去。编辑下面的代码以满足您的需求,第3步是此处的重要部分。
private boolean prepareVideoRecorder() {
mCamera = getCameraInstance();
mMediaRecorder = new MediaRecorder();
// store the quality profile required
CamcorderProfile profile = CamcorderProfile.get(cameraid, CamcorderProfile.QUALITY_HIGH);
// Step 1: Unlock and set camera to MediaRecorder
mCamera.unlock();
mMediaRecorder.setCamera(mCamera);
// Step 2: Set sources
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
// Step 3: Set all values contained in profile except audio settings
mMediaRecorder.setOutputFormat(profile.fileFormat);
mMediaRecorder.setVideoEncoder(profile.videoCodec);
mMediaRecorder.setVideoEncodingBitRate(profile.videoBitRate);
mMediaRecorder.setVideoFrameRate(profile.videoFrameRate);
mMediaRecorder.setVideoSize(profile.videoFrameWidth, profile.videoFrameHeight);
// Step 4: Set output file
mMediaRecorder.setOutputFile(getOutputMediaFile(MEDIA_TYPE_VIDEO).toString());
// Step 5: Set the preview output
mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface());
// Step 6: Prepare configured MediaRecorder
try {
mMediaRecorder.prepare();
} catch (IllegalStateException e) {
releaseMediaRecorder();
return false;
} catch (IOException e) {
releaseMediaRecorder();
return false;
}
return true;
}
+0
效果不错..谢谢 – 2016-02-19 01:40:21
+0
不错的解决方案......它对我非常有用..... – jack 2016-07-01 19:37:32
谢谢!真的行!也许你知道如何将这些设置应用于CamcorderProfile?因为我使用自动生成的PARAMS如'camcorderProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);',那么所有的设置都为'mediaRecorder.setProfile(camcorderProfile)施加; ' – Sergii 2012-08-12 16:09:34
你能否提供更多的信息,因为它不适合工作。 – 2015-09-10 08:39:12