Camera2Video databinding

so in the Camera2Video sample in the CameraActivity class you are importing this
import com.example.android.camera2.video.databinding.ActivityCameraBinding
but databinding dosent even exist in the project structure

Start with the Camera2Video sample's CameraActivity and verify whether the reported ActivityCameraBinding import still fails in the current project. Reproduce the sample build failure, then confirm completion when CameraActivity compiles with a valid binding reference and the sample builds successfully.

Written by the indexing model from the issue text.