Search found 476 matches

by mikb
Thu Sep 24, 2020 3:55 pm
Forum: ZoneMinder 1.34.x
Topic: Assistance with Conexant Security BNC Card
Replies: 6
Views: 164

Re: Assistance with Conexant Security BNC Card

... or "tvtime", which I use to watch analog input TV on a BT848 based card. You could also try supplying a known-good analogue signal (from a composite output on a DVR/camera/anything else) to the card's inputs. If the signal from your camera is not a properly compliant PAL/NTSC signal, you may wel...
by mikb
Tue Sep 22, 2020 3:53 pm
Forum: ZoneMinder 1.34.x
Topic: excessive ammounts of mysql activity caused by zoneminder?
Replies: 4
Views: 104

Re: excessive ammounts of mysql activity caused by zoneminder?

iconnor wrote:
Mon Sep 21, 2020 10:44 pm
rm -rf /
Somewhat brutal -- some day that joke will backfire when someone tries it ... :)
by mikb
Thu Sep 17, 2020 3:58 pm
Forum: Non-ZoneMinder Chat
Topic: [SOLVED] Axis M3025-VE - constantly switching between day/night modes
Replies: 3
Views: 224

Re: Axis M3025-VE - constantly switching between day/night modes

I'm assuming your original problem is when the camera is in "auto" mode, and it decides whether to IR-cut based on illumination level. Of course, if it is switching on an IR source, this will increase illumination which will cause it to think it's daytime again. It may just be with the IR cut filter...
by mikb
Tue Sep 15, 2020 4:05 pm
Forum: Non-ZoneMinder Chat
Topic: Camera backdoor
Replies: 5
Views: 200

Re: Camera backdoor

Is this practice wide spread? As a lot of these backdoors aren't documented (security through obscurity) it's hard to know until they get exploited, or unless you worked at the company making them ;) For one camera, there was an unpublished URL (e.g. http://camera/video.cgi , http://camera/admin.cg...
by mikb
Sun Sep 13, 2020 5:25 pm
Forum: Non-ZoneMinder Chat
Topic: PoE cam pigtail cut/rejoin?
Replies: 1
Views: 99

Re: PoE cam pigtail cut/rejoin?

Splicing CAT5/6 cable together with twist+electrical tape is not exactly within specifications. It may well work, it may introduced noise/emissions or a rather nasty reflection in the cable that stops it working. Alternative idea: An external grade small weatherproof junction box. Drill small hole i...
by mikb
Sat Sep 05, 2020 5:47 pm
Forum: ZoneMinder 1.34.x
Topic: image 'tearing' on amcrest 3MP dome
Replies: 5
Views: 232

Re: image 'tearing' on amcrest 3MP dome

Is ‘GOP’ a technical term here? Do they buffer up to a certain point then batch send? Would then the image corruption be related to packet loss in all likelihood? If so, that’s a lot (?) of loss for a hardwired link.. (I terminated the cable myself but fluke said it was good..) Is tcp support typic...
by mikb
Fri Sep 04, 2020 5:03 pm
Forum: ZoneMinder 1.34.x
Topic: image 'tearing' on amcrest 3MP dome
Replies: 5
Views: 232

Re: image 'tearing' on amcrest 3MP dome

Well I found my error - I had the monitors set to UDP, needed to be TCP. UDP is not a reliable transmission method, in that a packet can turn up none, one, or more times. In no particular order related to other packets. If you accept that behaviour as part of your system design, then it's fine. But...
by mikb
Fri Sep 04, 2020 4:55 pm
Forum: Hardware Compatibility List
Topic: under $30 cameras
Replies: 3
Views: 1317

Re: under $30 cameras

I got three dirt cheap cameras off AliExpress. Two 1080p indoor cameras that cost me €20 each (including shipping) and a third 1080p outdoor camera for €30 (including shipping) All three are setup on zm on a raspberry pi 4 4gb and now running fine (I had an issue getting all to work simultaneously ...
by mikb
Thu Sep 03, 2020 3:35 pm
Forum: ZoneMinder 1.34.x
Topic: image 'tearing' on amcrest 3MP dome
Replies: 5
Views: 232

Re: image 'tearing' on amcrest 3MP dome

You have the right word for it! Try searching the forum with the phrases "FFMPEG tearing" "FFMPEG smearing" -- this does come up from time to time, and should be fixable.
by mikb
Mon Aug 24, 2020 4:30 pm
Forum: Hardware Queries
Topic: Interfacing PC to BNC Security Cameras
Replies: 3
Views: 243

Re: Interfacing PC to BNC Security Cameras

... BNC cameras? Is there a good balun gizmo? You may need more than a balun to get you out of that one. Don't be fooled by seeing cheap balun devices that can adapt a BNC (coax) to twisted pair (cat-5) that have no real electronics in them. They are JUST cable adapters ... all they do is correctly...
by mikb
Sun Aug 23, 2020 7:30 pm
Forum: Hardware Queries
Topic: ANPVIZ camera slow and losing time
Replies: 4
Views: 208

Re: ANPVIZ camera slow and losing time

It was a delay by viewing it directly through it's web GUI. If the camera is suffering from its own incompetence, then I'm not sure ZM would improve that :) I was hoping you'd say the lag was not there when viewing directly, but laggy in Zoneminder. Glad you got it sorted by downgrading the firmwar...
by mikb
Sat Aug 22, 2020 4:11 pm
Forum: Hardware Queries
Topic: ANPVIZ camera slow and losing time
Replies: 4
Views: 208

Re: ANPVIZ camera slow and losing time

Is the 30-45 second lag there if you watch it "independently of Zoneminder" (i.e. its own app, its own web-page, through VLC ...) ? Or is the lag being caused by Zoneminder settings, e.g. having accidentally set a frame rate in Zoneminder (should be blank!) which is not the same as the camera's fram...
by mikb
Thu Aug 13, 2020 5:35 pm
Forum: Hardware Queries
Topic: User-friendly camera system 'upgradeable' to ZM?
Replies: 2
Views: 190

Re: User-friendly camera system 'upgradeable' to ZM?

My recommendation is to look in places other than Which? for reviews and ratings, especially on technical matters. Find a computing mag, and try again! :) You want to know about ease of use and consumer friendly? Then sure, some widely-supported, current fashionable-trend security-gizmo like Nest/Ri...
by mikb
Tue Aug 04, 2020 3:36 pm
Forum: Hardware Queries
Topic: TP-Link NC450
Replies: 15
Views: 8941

Re: TP-Link NC450

So often that it would corrupt the LAN routing tables making hosts on the LAN slow or unreachable. Camera being flaky aside, there is something else wrong with your network/router. Does this camera have a fixed IP address? (If not, give it one!) -- as it could be the constant requests for an IP add...
by mikb
Sun Aug 02, 2020 4:43 pm
Forum: ZoneMinder 1.34.x
Topic: UPS POWEROUT event to trigger Zoneminder
Replies: 8
Views: 460

Re: UPS POWEROUT event to trigger Zoneminder

Yeah so many cheap UPS's will not turn on unless there is enough juice in the battery. So when power comes back... your machines don't. Not useful. It depends what you want to happen (and the consequences of that desire!) "Not turning on because: Battery dead" is a good feature IMO. A lot of APC on...