使用Camera2(在Android 21版上)API录制60fps的视频 [英] Recording 60fps video with Camera2(on Android version 21) API

问题描述

我正在尝试在Camera2(android.hardware.camera2)API上以60(或更高)fps的速率录制视频.

I'm trying to record a video at 60(or more)fps rate on Camera2(android.hardware.camera2) APIs.

最后，我成功使用 CameraConstrainedHighSpeedCaptureSession 以120fps的速度录制.但这仅针对> = 120fps用例，而不是60fps.

Finally, I succeeded recording at 120fps using CameraConstrainedHighSpeedCaptureSession. But it is only targeted at >=120fps use case not for 60fps.

即使我尝试使用正常的捕获会话以60fps进行录制( CameraCaptureSession )，则仅支持< = 30fps.我可以通过下面的代码找出答案.

Even I tried to record at 60fps using normal capture session(CameraCaptureSession), it only supports <=30fps. I could figure it out through this code below.

Range<Integer>[] fpsRanges = characteristics.get(CameraCharacteristics.CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES);

我不知道如何使用Camera2 API以60fps的速度录制.

I don't know how I could record at 60fps with Camera2 APIs.

任何想法都将受到欢迎.

Any idea would be most welcome.

谢谢.

推荐答案

您必须从CameraDevice创建一个ConstrainedHighSpeedCaptureSession并实例化一个新会话，就像对普通捕获会话所做的那样.

You must create a ConstrainedHighSpeedCaptureSession from CameraDevice and instantiate a new session as you possibly did with a normal capture session.

另外，您需要为Builder设置下一个值:

Also you need to set the next values to your Builder:

myPreviewRequestBuilder.set(CaptureRequest.CONTROL_MODE, CaptureRequest.CONTROL_MODE_USE_SCENE_MODE);
myPreviewRequestBuilder.set(CaptureRequest.CONTROL_SCENE_MODE, CaptureRequest.CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO);
myPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, new Range<Integer>(frameRate, frameRate));

之后，使用您的构建器生成一个CaptureRequestList:

After, generate a CaptureRequestList with your builder:

 myHighSpeedRequestList = ((CameraConstrainedHighSpeedCaptureSession) cameraCaptureSession).createHighSpeedRequestList(myPreviewRequestBuilder.build());

并在您的捕获会话中使用它来生成CaptureSession:

and use it in your capture Session to generate the CaptureSession:

mCaptureSession.setRepeatingBurst(myHighSpeedRequestList,
                                  YourHighSpeedVideoCaptureCallback,
                                  YourBackgroundHandler);

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