What is DVR?

"DVR" refers to a digital video recorder.

DVR is called digital video recorder. A digital video recorder is a device that records images in digital format to a disk drive or other storage devices. Digital video recorder includes an independent set-top box and software running on PC, which is used to record and play videos on disk.

Digital video recorder has the functions of monitoring, video recording, playback, alarm, control, network, password authorization and work schedule.

Extended data

Matters needing attention in purchasing digital video recorder:

1, video speed

Note that video recording of image displacement detection refers to full-screen compressed recording of cameras with image displacement, not just the part of each camera image with image displacement activity.

2. Storage capacity and backup

The larger the recording capacity, the better, but the most important thing is to have an interface to connect external digital storage devices to back up image data. Only by frequent backup can valuable images be safely saved and transmitted easily.

3. Image clarity

Image definition directly reflects the quality of DVR, but technically speaking, the higher the definition, the greater the storage capacity, so let users adjust the definition according to the actual situation.

4. Is the operation simple or not

Whether the operation is simple or not ultimately determines the adaptability of the product in practical application.

Baidu encyclopedia -DVR