videobruce
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Everything posted by videobruce
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Ability to use existing coaxial cables & power from an analog system, No IP nightmares between cameras, No bandwidth restrictions. As long as the DVR has a Ethernet connection you have all the access from each camera you would have if they are IP. The only benefit I can see from IP is if you are setting it up with POE which is basically the 'lazy' way to go. You still need cables and 'pulling' a 2nd cable isn't really that more difficult assuming you want all your power coming from a single power supply. Ethernet cables need additional care not to get them 'kinked' (which is easy to happen). I just feel IP is overated.
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Did you ever consider HD-TVI that uses conventional coaxial cable and separate power feeds? You can still remotely access the cameras via the DVR as long has that has a IP ability. You do NOT need to have IP cameras to access than remotely. And to answer the OP's question wireless is a PITA! It's advertised as the 'lazy' way to setup up a system, but as others already stated, the cameras still need to be powered.
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TVI seems to be the logical way to go, but there are two problems. The four monitors that will be used are all in separate rooms. Way too far for HDMI and that outdated VGA. Why the Chinese insist on using that ancient interface is beyond me. Anyway, the only solution is to use the existing video cable feeds even thou the image will be analog. Most DVR's do not have a composite out even thou there is a port for it. None of the compact models which is what I would prefer to use have that. The question are; 1. Will the resulting downconverted image be noticeable better in spite of the video format being used? 2. Will the composite image be anaphoric 16x9 squeezed into a 4x3 that could be stretched or postage stamp (16x9 within a 4x3 with black bars top & bottom)?
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You quoted a quote that was quoting a quote without any reply??
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The max distance to the furthest monitor is around 40' Any idea what 720p & 1080i w/o audio is?
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Which is what I said. BTW; "snow" always meant a weak NTSC (OTA or CATV) analog channel.
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I would assume he is referring to video noise.
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Wireless is the lazy way to do things. Period! It's well know that it is undependable and problem prone. All one has to do is read threads on most anything wireless, especially consumer home video gear.
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Day/Night IR cams WITHOUT built in IR (Suggestions Pls)
videobruce replied to mikemihai89's topic in Security Cameras
I don't know why the Chinese seem to think everyone wants/needs built in IR illumination. They usually do a poor job, create a halo effect (unless designed properly), add unnecessary expense, power consumption & complexity to the camera. Another reason I prefer box cameras other than quality and lens choices. -
Cameras going black with white wavy lines at night...
videobruce replied to CCTV4CrazyMe!!'s topic in Security Cameras
1. How/where are the cameras powered? Locally, or a single PS for all? 2. Measure the voltage out if a single PS at the supply under load. Then at each camera under load. That may require some creative wiring depending on how they are connected (dongle w/ jack or screw/push in terminals). 3. Is anything grounded separately? (for ground loops, you will have to search on that subject, it can be complicated if that is the problem) If voltages are ok, at least 9v, preferably 10v for 12VDC depending on the camera. (for AC; I'm not sure of for what a cut off voltage would be) for a centralized PS. The easiest way if you have a single PS is substitute another supply and see if that changes anything. -
Don't believe the numbers on these cheap no-name Chinese cameras. For that matter that applies to all of them. Many claim 540, but AFAIC, I doubt they are doing 300. probably more like 200 lines. My guess where they got that bogus number from is the spec on the chip itself, before processing.
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Loose cables hitting the side of the tower??
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Cameras going black with white wavy lines at night...
videobruce replied to CCTV4CrazyMe!!'s topic in Security Cameras
Ground loops?? -
24v should be AC. Are their polarity making on the terminals?
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he won't be coming back, his notifications weren't turned on. If the default was on, there wouldn't be a problem.
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Bosch's LTC0455 analog cameras video is very over enhanced creating extremely noticeable undershoot artifacts (black outlines) when there are objects (buildings, trees, utility poles etc.) that have the sky behind them. There is no setting to reduce or turn off the enhancement that other cameras have. You can reduce the auto iris setting (if you use a auto-iris lens) which helps slightly, but doesn't solve the design shortcoming. Are all their other analog cameras the same way (485 & 620 for example)?
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2MP in all cameras the equivalent of 1080p?
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Answer the question; who or what made 2MP "standard for 2016"?
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1. What country are you from? 2. If it is one that uses a PAL 25Hz frame rate, the camera got changed to 30Hz as in NTSC
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According to who or what??
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Needs details of the equipment. Analog, IP, other? How powered Locally, home run feed, other? Is there power to the specific camera? Is it on the same input of the DVR if these are analog cameras?
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Single camera at a time, rotating thru all four cameras. Those adapters have a high % of failures according to the reviews of three others. The one you posted only had 10 reviews which isn't meaningful enough.
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Would you answer my previous questions please? Can you take screen shots with a true digital camera?
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Ok, something meaningful, thank you. 1. What size monitor is this from? 2. Is this a 4x3 or a 16x9 monitor? 3. What resolution are the camera(s)? 4. Which DVR's are they? 5. Are there any settings on either DVR that affect PQ or resolution? At first, I didn't see the difference until I took a 2nd look. Not a whole lot based on the size of the displayed attachments.
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I don't do wireless anything when it comes to CCTV or computers (both, which are fixed location devices) except for Laptops.