Which of the following statements about video recording is correct? (Multiple Choice)

Which of the following statements about video recording is correct? (Multiple Choice)
A . The planned recording function can automatically record according to the time period planned by the user, so that the stored video can be retrieved and checked when needed.
B . Cache supplemental recording function is used to store the video of the bayonet camera on the camera SD card when the network is abnormal, but it does not support the structured data generated by the storage bayonet camera
C . The recording lock function can keep the recording or extend the recording retention time according to the user’s needs, to retain the recording of the important area
D . Playback on the wall function to display live images on the large screen, which is convenient for users to view historical video images

Answer: ABC