Compare digital cctv versus analogue cctv
DIGITAL Vs ANALOGUE
The following table compares the features and benefits of Digital CCTV versus Analogue CCTV;
| Digital | Analogue |
|---|---|
| Systems can record for days, weeks or even months depending on the size of the storage drive and the number of cameras/resolution settings. | Tapes should be changed each day to avoid the risk of recording over footage. Each tape can record a maximum of 24 hours in time-lapse mode. |
| Image quality is the same no matter how many times you record to the hard disc, the picture quality does not degrade following multiple recording or playback. | Tapes must be changed on a regular basis due to wear and tear as the picture quality degardes after long term use. |
| Picture quality on digital recordings is of a higher quality due to the available banwidth of the format compared to analogue. | Copying the original video casette tape for distributing the footage to others further reduces the quality. |
| Systems are capable of recording up to 100 images per second and record simultaneously from all connected cameras (depending on model). | VCR's switch from camera to camera in sequence rather than recording from all cameras at once. |
| Incidents can be found very quickly, by simply inputing the date and time it took place, rather than looking through hours worth of footage. | You have to watch through, or fast forward through the footage to find the incident you are looking for. |
| GPRS, Wireless LAN and other forms of connectivity mean that you can communicate with the recorder to access and review files, as well as being able to upgrade/check the system. | Taking still pictures from the video cassette or sending copies of the video footage is not easy and requires addtional equipment. |
| Files can be stored on the hard drive of an office computer, network server, CD or other form of media at low cost. | Storing video casettes for future review requires a large number of tapes and office space! |
| Video files and still images can be transferred to CD and sent at low cost to other parties for review. |
If you require further information or advice on the use of digital cctv please contact us.