Audio-visual signal: the signal is easily disturbed by external noise, and there will be a certain quality loss after each video playback. And the tape is not easy to store, which is the biggest disadvantage.
Fact video recording function: You must always prepare a blank video tape and load it into the video recorder for recording.
Recording while watching: it is impossible to record continuously while watching the playback image.
Search function: due to the limitation of tape structure, only sequential search can be performed. To find an image, you must bring it back from the beginning, which is inconvenient to use.
Video content management: After a period of use, a lot of video content management will often confuse users.
Don't come to the exhibition: the product is mature and the added value that can be increased in the future is limited.