Hello all, i am an artist in the UK and want to use CCTV as part of an installation.
Basically, i want to have the CCTV pointing at some stairs, with the feed playing on an old TV round the corner, but on a delay. Say 20 seconds delay perhaps.
Is that possible? And if so, what equipment do i need?
Many thanks in advance.
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You need a video camera, a computer, and the TV. Particulars depend on what kind of signal the camera generates and the age of the TV — does it accept composite video or antenna only? For software, check out Live Video Delay. You might also be able to do this with VLC's streaming feature which has a configurable delay.
Last edited by JVRaines; 9th Feb 2018 at 15:19.
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Yes, that's the general idea. Any sort of camera that will work with the computer. I'm not sure Live Video Delay goes as high as 20 seconds, though. You'd have to experiment.
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VLC also has the ability to capture from a video capture device or webcam, and to stream video across a network. So it could be used to capture from a webcam and stream to another device (in lieu of an IP camera). I believe you an even specify a cache size to automatically give the 20 second delay.
Search youtube for "vlc streaming webcam" or similar and you'll see lots of tutorials.Last edited by jagabo; 9th Feb 2018 at 19:36.
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Thanks so much for all your help.
Just tested the VLC thing and the delay works great!!
So I want to play the laptop feed onto old TVs (three of them probably) now googling around, i can get a HDMI splitter and also a HDMI to VGA (so it connects to the old TV) what i want to know is, will the HDMI splitter play ALL of them at once, or will it only play one ?
On photos there is a select button, for HDMI 1, 2 & 3....so i wasnt sure! -
A true splitter (sometimes called a distribution amplifier) will display on all outputs at the same time. And it usually doesn't have any switches. If there's a switch on the device it's probably a multiple input, single output switch.
HDMI splitter (one in, four out):
https://www.amazon.com/Splitter-Movcle-Adapter-Powered-Certified/dp/B0180PPTNO/
HDMI switch (three in, one out):
https://www.amazon.com/Switch-GANA-Splitter-Pigtail-Supports/dp/B06VX1PKQ7/Last edited by jagabo; 10th Feb 2018 at 08:08.
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I guess everything is relative. VGA doesn't make an "old" TV to me. Here is the input connection on an old TV:
[Attachment 44651 - Click to enlarge]
I once used a couple of these old TVs in a museum exhibit playing video from the 1970s. -
You can also get a VGA distribution amp like this:
https://www.amazon.com/Monoprice-Splitter-Amplifier-Multiplier-300MHz/dp/B002NJX3XW/
Keep in mind there's a limit on the length of HDMI and VGA cables. Roughly 30 to 50 feet. For longer runs you'll need repeaters.Last edited by jagabo; 10th Feb 2018 at 09:37.
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