Page 8 - alienHero HD-SDI Guide

HD-SDI

...Understanding CCTV Resolutions

CCTV equipment resolutions are often a bit mystifying but in essence all the different resolution means is how
many pixels are used to make up the picture. The more pixels (small squares of colour) you have the more
detail you can display!
Most cheap analogue DVRs offer CIF recording, and the more expensive offer 4CIF. The alienHero HD DVR
offers a staggering 1920 x 1080 pixel recording and live display. If you look at the diagram below you can
see that it provides 20x more image quality than a cheap analogue DVR!

CIF 20x Quality! 1080p

Cheap Analogue DVR 2,073,600px = 20.45 alienHero HD DVR
= 20.45
101,376px
Total Pixel Count: Total Pixel Count:
352 x 288 = 101,376px 1920 x 1080 = 2,073,600px

352px 1920px

288px 1080px

41px 154px

50px 274px

8 www.aliendvr.com