4 cameras on one screen?
 

I need to find a cost effective way to being able to monitor 4 video cameras on one screen. I've seen some great looking monitors out there with SDI inputs and such, but they break the bank. Ideally, I'd like to take 4 cameras and have it combine them into a single video signal so I can see each camera on a quarter of the screen.

Basically, I need something so I can see basic framing when I'm calling shows. I'd like to have even the component outputs of the cameras feed my screen so that I can tell an op when they aren't framing correctly. Hi def is not critical for these needs.

I've seen some pretty low-end things out there for survalence, but I really don't know what level of quality they provide. I don't need a super high-end picture, but I would like it to not completely suck.

Ideas? Thanks in advance.

--Ben

Re: 4 cameras on one screen?
 

If you can use a normal composite signal you can get a cheap security camera multiplexer.

If you need a SDI quad multiplexer that is not a cheap item. They start at about $2500.

Re: 4 cameras on one screen?
 

Like this one:

4-Channel H.264 DVR Security System with 7 Inch LCD Screen (2x SATA HDD Interfaces)

I'm sure they have a webpage with USD prices.

This box has four composite camera inputs, each with sound, and two separate outputs, one composite and one VGA.

Steve

Re: 4 cameras on one screen?
 

If it's only for framing why not buy four cheap analog lcd's and mount them on a frame.

Re: 4 cameras on one screen?
 

I've thought about doing something like that, but it requires time- something I don't have much of right now. I'm also trying to keep it relatively small as I have a huge amount of stuff that I'm pulling into the field already. Between cameras, sound gear, etc... there is a lot in my car.

In an ideal world, there would be a device that would combine 4 signals and output on a VGA plug so I could use some of my older road-racked LCD monitors (from old DAWs).

I've also considered the security camera thing, but as I mentioned before I have no idea about quality of a lot of those things. While I don't need something that is super high-end, I do need to be able to tell what's going on and some of the security camera rigs are pretty horrible looking.

Basically, I've had some communication issues with camera ops in the past that have resulted in questionable footage for an edit. Being able to see what they are doing exactly would solve those problems.

--Ben

Re: 4 cameras on one screen?
 

If you want something *affordable* AND good quality, then you must spend time designing something yourself. If you want something with good quality but cannot spend any time on it, then it will cost you considerably more for a turnkey system.

For low cost, I would contact someone like Olof from Westside-AV who is on this forum and ask him to build a system that can hold 4 5" LCDs with all of your requirements such as being rack-mounted or being powered from some AB or V-mount batteries and/or having a power strip/surge protector built into the backside so you would need only a single extension cable to power it. Olof has offered to custom build equipment for me and many others; so, I would trust his ability to design something affordable.

Also, I believe BlackMagic Designs might have some dual and quad display systems which are rack-mountable and very affordable.

The low cost surveillance systems I have seen offer either: 1) good real-time viewing but low image quality or 2) poor real-time viewing and good image quality. Usually, the better the image, the lower the frame rate which is designed to keep the bandwidth at affordable levels. Recording multiple video sources at 30fps requires a lot of bandiwdth so there is a give and take between image quality and fps.

Re: 4 cameras on one screen?
 

Nvidia has a series of cards that can just about do what you want. See my second reply here: http://www.dvinfo.net/forum/open-dv-...lay-array.html

It should work great for 4 SD signals.

Re: 4 cameras on one screen?
 

Check out the Decimator-Quad. It takes 4 SDI signals and combines them into one SDI or composite output. I think retail is $765.

Re: 4 cameras on one screen?
 

Matrox just introduced a new product at NAB, takes 4 HD-SDI inputs and does a quad screen, or switch to full screen of any single input. Called the MicroQuad, under $1000, don't believe it is shipping yet

Thanks

Jeff Pulera
Safe Harbor Computers

Re: 4 cameras on one screen?
 

It's a shame they don't have sdi out.

Re: 4 cameras on one screen?
 

To clarify what Marshall mentioned, the Decimator Quad will deliver a quad split via composite and SD-SDI output. The MD-Quad will do the same but also deliver HD-SDI output as well as HDMI (so you can use a low cost consumer flat screen) as well as some other features. The Decimator Quad costs $765 and the MD Quad is $1425.