ZoneMinder Forums

apparently, "standard" cctv signal is 1volt peak-peak from the camera into 75ohm cable. two quick questions: 1. is it critical to terminate each end of the cable, like in the old 110-ohm rg58au coax networking days? 2. what is the approximate upper practical limit on the cam cable before image ...

4/8 port LML vs 4/8 port spectra8.

Which is best supported?

Any differences in performance?

That was the gist of two recent emails regarding using firewire for linux surveillance: Warning, wrong path! Seems there are definite issues with cable length and repeaters vs standard CCTV cams or even USB2. Also, apparently there is not yet (Nov 2005) a frame-capture driver that rips from /dev ...

the isight comes up as /dev/video1394/0

got an app called 'spook' to stream from it onto a mac via quicktime

and managed to pull one jpeg frame off it

but nothing else

i'm having trouble getting latest zm to compile on an amd64

ubuntu 5.10 on an amd 64 bit, following directions (I think) w/o doing anything intentionaly weird or stupid: root@kiwi:/files/zoneminder-1.21.4# make make all-recursive make[1]: Entering directory `/files/zoneminder-1.21.4' Making all in src make[2]: Entering directory `/files/zoneminder-1.21.4/src ...

does anyone on here have experience w/ firewire + zoneminder yet?

long shot, but there's no chance it's something to do w/ insufficient inodes or something similar/related ?

times i've seen weirdness all center around disk problems.

we just picked up another potential new client. he wants 15 cameras capturing at 5 fps. i'm thinking 15 iSights at 320x240 split over 2 firewire busses, for a total video flow right around 30fps per bus at 1/4 the size of a normal, full-frame video feed. does this seem unreasonable? we got one ...

you know what's really funny about this DVR / digital cam stuff ? years ago, when scanners were new, and incredible. 300 dpi scanning, you know! -- remember that? and remember how the average person just didn't "get it" regarding how long it took to scan one page, and how much storage it consumed ...

we found cowboyfrank.net has numerous "webcam" comparisons (camparisons?)

We're building a surveillance system w/ 5 cameras capturing 5fps each. We're considering using 1394 cams like the Fire-I, apple isight, or irez.com versus a system using traditional CCTV cams running into an 8 port capture card/s, like the spectra/8, LML, or equiv built on bt878 chipset. One goal is ...

just a thought -- did you try replacing the power supply, too ?

what kind of drive was it that failed?

we have had _so_ many hard drive problems, we've probably, sadly, conservatively, lost man-decades due to those (collective drive makers) bastards.

the first problem with that would seem to be the reduced (compressed) quality of mpeg4 vs. plain/uncompressed jpeg "stills". second problem is it's still so much easier and standard to web-serve jpeg stills vs. any kind of stream. we're considering a 6 cam server, capturing each at 5fps, storing to ...