3 megapixel surveillance cameras store much day
3600 seconds (per hour) * 24 hours (per day) * Rate (128kbps-8Mbps) / 8 (conversion of bytes and bits) / 1024 (converted to M) / 1024 (converted to G) ≈42G (bit rate is 4Mbps)
Monitor video 24 hours per channel per day Recording space size calculation formula:
3 million pixel surveillance camera video bit rate is generally set to 4Mbps, video files 24 hours a day about 42G.