ZoneMinder Forums

Sometimes it's when the culprit is not moving that the clearest frames are captured...

Cheers, I'll experiment some more...

These are fairly standard WinTV cards with two cameras each. One pair is monochrome and the other pair is colour. I'm using interlaced PAL with ZM_CAPTURES_PER_FRAME set to 2. The colour pair has 0.5fps normal and 1.0fps max. The monochrome pair are 3.0/5.0 and 1.5/5.0 (normal/max). I've a feeling t...

I've just installed 1.22.2, and I've been plating with the "Alarm Maximum FPS" values. I havn't been able to convince myself that anything happens, but so far all the events have been short. At what point should the frame rate increase (assuming the hardware and buffer settings can take it)?

The ZM_DYN_DB_VERSION reference comes from the code in the init script (from scripts/zm.in) that's trying to figure out whether to create or update the database automatically. I think the best thing to do is to take all that stuff out of the init script. It really needs to be in a run-once-only post...

I've been trying to get that automatic DB upgrade bit in scripts/zm.in to work. I've hit two main problems: First, the code that attempts to extract the current version from the database was getting the wrong impression. My database is at version 1.22.0 but ZM_DYN_DB_VERSION said 1.21.4. I fixed tha...

And why are we interlacing anyway? If you're using a video camera as a source, and it provides a "standard" analogue video signal, then it is going to be interlaced, because that's the way those things work. I have also connected a camera directly to a monitor - no combing. If you're view...

I've used remind for doing quite a few odd-time-of-day things where cron isn't flexible enough. Generating zoneminder events based on local sunrise and sunset is just one. Updating a website with phase-of-the-moon is another. reminding me about things (via tkremind) is another. The main catch is tha...

recompiling gentoo

Good Luck!

The CPUs with relatively small on-chip caches may do better with the size optimisations than the speed ones. I'd be tempted to experiment with just re-compiling the kernel to begin with, to see how small I could get the kernel, and whether that made it run faster...

Could it be an issue with the frame buffer being too small?

I have some not very good experience with sata - it is not fast enough. Some of you suggested that traditional ide disks work better than sata in linux. Yes, we had a lot of "fun" with early versions of the SATA drivers. I think the most recent ones may be better, but some of our systems ...

Yep, kernel experimentation is not something to do on a main system...

If you get the right set of options for your hardware then it will, especially if your hardware is a little unusual.

Yeah, for the kind of camera that gets hooked up to 8x8 cards, the only option is to do some de-interlacing after the raw frame capture. There do seem to be folk out there trying to get the necessary code together, but it's clearly a non-trivial task, and bound to put an extra load on the CPU. Quite...

Google on "deinterlace" will likely throw up some interesting reading. http://www.100fps.com/ has quite a bit on the matter.