On 2018-07-23 10:25, Rafael Lima wrote:
They set up a 4k camera on top of a building (have electricity, but
limited internet),
4K on limited internet? is just in my mind that those two words doesn't fit
together?
What do you mean by " capture 6-12 hours of 4k 29.92fps video from that
camera"? Is the camera streaming the video somehow and you just need to
store it?
Thank you for your reply, Rafael.
I'm sorry if my original message wasn't clear. I understand why "4K" and
"limited internet" might not fit together. The missing part is "enough
terabytes of reasonably fast SSD storage on the server to which the
camera is attached to hold the video".
So yes, I "just" need to store it. And I need to store every frame of 4K
at 29.92fps. And I need the capture system to not run out of memory, or
crash, during the 12-hour session. And if an individual part of the
capture system could crash more often than, say, during 1% of the
12-hour sessions, then I need some kind of redundancy to allow another
system to capture if the primary system has failed.
On 2018-07-23 10:25, Rafael Lima wrote:
...If it is your only limitation are the [bandwith] and storage as
ffmpeg doesn't need to process nothing and it could be done with any stream
saver program
This sounds reassuring, as if this isn't such a hard task after all. But
I don't hear you saying that you know of someone who has done it.
On 2018-07-23 00:42, Roger Pack wrote:
It "should" work assuming your transcoding/disk can keep up with realtime
...
Thank you, Roger. I am hearing you say "should work", not "did work, for
a real-life case I know".
On 2018-07-23 05:42, Another Sillyname wrote:
Yes, but honestly I think you [Roger Pack] are over simplifying it......
For example, are you intending to capturing scenes with high activity
that requires a much higher bandwidth and transcoding capability? ...
The capability exists and as you've stated the existing solutions can
be crazy expensive, but if you're going to homebrew a solution you
need to do some work/testing to make sure what YOU want to capture can
be done within YOUR budget.
Thank you, "Another Sillyname". This is what I'm concerned with: that it
might work, might not, and the only way to gather data is to try my own
experiments.
My goal with the question was to limit the range of possibilities, by
having someone come forward with concrete experiences. If I hear, "we
tried it, it was crazy hard", maybe I should tell my boss to pay for the
crazy expensive commercial solutions. If I hear, "we tried it, it was
pretty easy", maybe I encourage my boss to let me homebrew a solution.
In either case, we will have to test it.
Thank you all for your replies,
—Jim DeLaHunt, Vancouver, Canada
--
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--Jim DeLaHunt, j...@jdlh.com http://blog.jdlh.com/ (http://jdlh.com/)
multilingual websites consultant
355-1027 Davie St, Vancouver BC V6E 4L2, Canada
Canada mobile +1-604-376-8953
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