I’m refering to this
I’ve also seen it happen to a single letter in that string
No one gonna mention anything about how that dude is lucky to be alive? Holy shit I thought this was going to be a different kind of video.
Why does the permanent timestamp in CCTV footage sometimes change color?
Submitted 10 months ago by ReginaPhalange@lemmy.world to nostupidquestions@lemmy.world
Comments
_danny@lemmy.world 10 months ago
Dave@lemmy.nz 10 months ago
You think the dude in the truck is fine?
theKalash@feddit.ch 10 months ago
For contrast so the text remains readable.
FuglyDuck@lemmy.world 10 months ago
Like others have said, for contrast.
Though, they’re not exactly “permanent.” Depending on the encoding, they’re potentially pretty easy to remove. (If it’s encoded to meta data. It’s just a playback thing. You can turn this on for VHS movies, too,)
skbo@lu.skbo.net 10 months ago
It’s done to have a big contrast between the letter and its background, so you can read all the information all the time (except in edge cases, like the seconds in the video you show, the background is mostly 50-50 with black and white, so the text is kept in black, and can be a bit hard to read)
Still@programming.dev 10 months ago
it’s for contrast, white text on light background is almost impossible to read same with dark on dark uses a per character or per pixel filter to determine the color of the text
ReginaPhalange@lemmy.world 10 months ago
It seems like over engineering when stuff like this are common knowledge.
CookieOfFortune@lemmy.world 10 months ago
Doesn’t seem like enough resolution for an outline to work.
Tetsuo@jlai.lu 10 months ago
Also this conveniently doesn’t show white color background.
FuglyDuck@lemmy.world 10 months ago
That takes up more space than they care to give it
DV8@lemmy.world 10 months ago
Yellow with blue line us even better for CCTV use imo.