camera.setFrameProcessingFormat(ImageFormat.NV21)

[yecaler]

How do I?

use
camera.setFrameProcessingFormat(ImageFormat.NV21)

error message:
Process: com.otaliastudios.cameraview.demo, PID: 9008
java.lang.NullPointerException: Attempt to get length of null array
at com.otaliastudios.cameraview.engine.Camera2Engine.getFrameProcessingAvailableSizes(Camera2Engine.java:350)
at com.otaliastudios.cameraview.engine.CameraBaseEngine.computeFrameProcessingSize(CameraBaseEngine.java:937)
at com.otaliastudios.cameraview.engine.Camera2Engine.onStartBind(Camera2Engine.java:555)
at com.otaliastudios.cameraview.engine.CameraEngine$8.call(CameraEngine.java:470)
at com.otaliastudios.cameraview.engine.CameraEngine$8.call(CameraEngine.java:466)
at com.otaliastudios.cameraview.engine.orchestrator.CameraStateOrchestrator$2.call(CameraStateOrchestrator.java:69)
at com.otaliastudios.cameraview.engine.orchestrator.CameraStateOrchestrator$2.call(CameraStateOrchestrator.java:60)
at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator$3.run(CameraOrchestrator.java:152)
at com.otaliastudios.cameraview.internal.WorkerHandler.run(WorkerHandler.java:137)
at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator.execute(CameraOrchestrator.java:147)
at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator.access$100(CameraOrchestrator.java:34)
at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator$2.run(CameraOrchestrator.java:137)
at android.os.Handler.handleCallback(Handler.java:755)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.os.HandlerThread.run(HandlerThread.java:61)

Version used

api 'com.otaliastudios:cameraview:2.7.2'