5 ms·

HD (1080p) video @ 30fps is from 130-149MB/sec 2TB / 149MB = 13,422 minutes == 223.7 hours == 9.32 days I'm being facetious of course but I was surprised by j

HD (1080p) video @ 30fps is from 130-149MB/sec 2TB / 149MB = 13,422 minutes == 223.7 hours == 9.32 days I'm being facetious of course but I was surprised by just how much storage space I needed to record security cameras. I have a mix of 4k & HD, and 10tb doesn't even get me a month of 24/7.

michaelt 3y ago
YouTube’s 1080p is 5 megabits per second, not 130 megabytes per second. So 2TB lasts 37 days, meaning blowski is right. Of course powering that bodycam will be a different matter.
- Domenic_S 3y ago
  Of course this is all academic: the file size depends on the codec, ie how much you want to trade power for space. YT/Netflix/etc obviously trade for file size very well. But a body-worn device isn't as capable. Take the Axon Body 2 as an example, the gold standard for police bodycams. According to its specs [0] it'll record 12 hours of 1080p video on its 64GB internal storage. So using H.264 it produces 64gb/12hr == 5.333 (repeating of course) GB/hr, making 2TB / 5.333GB == 375 hours, or about 15.625 days [0] https://s3-us-west-2.amazonaws.com/cms-nppgov.resources/app/uploads/2017/06/15145726/TASER-Camera-Axon-Resources.pdf https://s3-us-west-2.amazonaws.com/cms-nppgov.resources/app/...
LASR 3y ago
Video compression. Another separate modern marvel of mathematics. Not sure what security cameras you’re using, but mine all use H.264 1080p compressed streams. I get about 15 days worth on a 2TB spinning rust across 6 cameras. Even going by your own numbers, you almost certainly are using compression too. 9.32 days on 2TB does not get you a month on 10TB if you “have a mix of 4K & HD”.
- Domenic_S 3y ago
  Indeed. I use Unifi cams, 3x4k & 5x1080p, they use h.264. My system's current estimate is 19d 20h 37m of recording.
  - specto 3y ago
    I really wish they enabled h265
LeafItAlone 3y ago
What cameras are you using?

michaelt 3y ago

YouTube’s 1080p is 5 megabits per second, not 130 megabytes per second. So 2TB lasts 37 days, meaning blowski is right. Of course powering that bodycam will be a different matter.

Domenic_S 3y ago
Of course this is all academic: the file size depends on the codec, ie how much you want to trade power for space. YT/Netflix/etc obviously trade for file size very well. But a body-worn device isn't as capable. Take the Axon Body 2 as an example, the gold standard for police bodycams. According to its specs [0] it'll record 12 hours of 1080p video on its 64GB internal storage. So using H.264 it produces 64gb/12hr == 5.333 (repeating of course) GB/hr, making 2TB / 5.333GB == 375 hours, or about 15.625 days [0] https://s3-us-west-2.amazonaws.com/cms-nppgov.resources/app/uploads/2017/06/15145726/TASER-Camera-Axon-Resources.pdf https://s3-us-west-2.amazonaws.com/cms-nppgov.resources/app/...

LASR 3y ago

Video compression. Another separate modern marvel of mathematics. Not sure what security cameras you’re using, but mine all use H.264 1080p compressed streams. I get about 15 days worth on a 2TB spinning rust across 6 cameras. Even going by your own numbers, you almost certainly are using compression too. 9.32 days on 2TB does not get you a month on 10TB if you “have a mix of 4K & HD”.

Domenic_S 3y ago
Indeed. I use Unifi cams, 3x4k & 5x1080p, they use h.264. My system's current estimate is 19d 20h 37m of recording.
- specto 3y ago
  I really wish they enabled h265

LeafItAlone 3y ago

What cameras are you using?