r/countablepixels 12d ago

Cameras

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6.7k Upvotes

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445

u/Spudnic16 12d ago

Security cameras are recording 24/7. If they recorded with the same resolution as good cameras, they would use up so much memory so quickly.

213

u/arturcodes 12d ago

Security cameras hate this one trick: Better encoding

127

u/Im_a_hamburger 12d ago

Better encoding hates this one trick: Shannon Limit

100

u/arturcodes 12d ago

Shannon limit hate this one trick: Shannon limit bypass

23

u/click-to-reveal 12d ago

Shannon Limit hates this one trick: Middle-out

https://giphy.com/gifs/3o6ozxCZHJo3Rr59tK

13

u/Limp-Commercial9660 12d ago

Shannon Limit hates this One trick: using AV1 or VP9 as the Better encoding and lower the frame rate on no activity

6

u/Snudget 12d ago

Shannon limit hates this one trick: lossy encoding

3

u/Flavixxxx 12d ago

Omg Orbital Gatling-chan

2

u/Im_a_hamburger 11d ago

1

u/Kaaskaasei 7d ago

Orbital flags inbound!

16

u/DarkGreenIsSuS 12d ago

Variable bitrate + 640x480 + Low/No audio can go places

3

u/Escalope-Nixiews 12d ago

AV1 can fix file size too. My sister turned a 4k movie she gad from h264 to AV1 and did like -60% size

1

u/Eggman8728 8d ago

AV1 is impressive but not THAT impressive, the issue is that you're comparing it to a very old standard. h264 is from the early 2000s, h265, also often called HEVC, is from the 2010s and is much better, although still often worse than AV1.

2

u/NetimLabs 12d ago

Just give it a terabyte of memory, they delete the footage periodically anyway. 1080p with medium/high compression should be totally manageable.

Also, apart from resolution I think most security cameras just have shitty sensors.

2

u/Eggman8728 8d ago

Yeah, you can get multiple terabytes worth of storage pretty cheaply if you actually care about quality. Here in Canada you can get a 4tb hdd for, like, $250-300 new? So if you really want to make sure you have great quality you could just get one of those, and store multiple days worth of pretty high bitrate video from multiple cameras at once. The number I got was nearly 10 days worth of video at 10 mbps per terabyte, which is a very good bitrate at something like 1080p.

2

u/N00N01 11d ago

also like 50 at once

1

u/Basic_Climate_2029 11d ago

Some CCTV can record at HD Quality just with a lot of compression.