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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 11:32 am 
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Yes, and that technology is known as Tribrid or Hybrid DVRs, and they're available for every signal type. They are DVRs specifically intended to bypass the complete lack of backwards compatibility in this industry.

There's no such thing as backwards compatibility. I haven't contradicted that. There's only workarounds to backwards compatibility and those workarounds exist for all signal types, not just HDTVI.

My hand remains far from my own face.


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 11:34 am 
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Don Stephens wrote:
Yes, and that technology is known as Tribrid or Hybrid DVRs, and they're available for every signal type. They are DVRs specifically intended to bypass the complete lack of backwards compatibility in this industry.

There's no such thing as backwards compatibility. I haven't contradicted that. There's only workarounds to backwards compatibility and those workarounds exist for all signal types, not just HDTVI.

My hand remains far from my own face.

Wrong, TVI & AHD does not need special recorder to use existing analog camera. It's just plug & play. So that is "Backwards compatibility"


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 11:39 am 
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I'm aware of that for HDTVI. They're building their DVRs to handle both signal types. You're on the verge of defining what a Hybrid DVR is for me.


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 11:46 am 
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None of this even matters. The fact is that HDTVI was never even presented as an option, but for some reason every thread demands at least one Hikvision super fan. All of this is just confusing the hell out of the person who originally asked the question.

Hikvision and HDTVI is super cool. It works just as well, and in a lot of cases, better than other brands. You win.


SymphonyX8,

HDCVI is not backwards compatible so don't make the mistake of thinking it is. If you want to run your existing camera in addition to new HDCVI cameras, you need a Tribrid DVR (SD Analog, HDCVI, IP). It's probably going to be more cost effective to replace cameras than it will be to keep them considering the price of DVR and size of the system.


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 11:50 am 
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Don Stephens wrote:
None of this even matters. The fact is that HDTVI was never even presented as an option, but for some reason every thread demands at least one Hikvision super fan. All of this is just confusing the hell out of the person who originally asked the question.

Hikvision and HDTVI is super cool. It works just as well, and in a lot of cases, better than other brands. You win.


SymphonyX8,

HDCVI is not backwards compatible so don't make the mistake of thinking it is. If you want to run your existing camera in addition to new HDCVI cameras, you need a Tribrid DVR (SD Analog, HDCVI, IP). It's probably going to be more cost effective to replace cameras than it will be to keep them considering the price of DVR and size of the system.


FYI, TVI does not belongs to HIK, there is already other TVI manufacturers out there producing TVI DVR. If you need to argue constructively make sure you get your facts right. :wink:


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 11:53 am 
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It's open source...of course there's other manufacturers. That doesn't negate the fact that everyone still associates HDTVI with Hikvision.

Would you like to try and point out errors in grammar next as a way to continue your argument or are you done now?


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 11:55 am 
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Don Stephens wrote:
It's open source...of course there's other manufacturers. That doesn't negate the fact that everyone still associates HDTVI with Hikvision.

Would you like to try and point out errors in grammar next as a way to continue your argument or are you done now?


No, not everyone associates HDTVI with HIK. At least not me.


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Fri Sep 26, 2014 3:42 pm 
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TVT (manufacturer for Q-see and etc) will release TVI as well.

But apparently they say analog doesn't work with it....

TVT TVI = all brands of TVI cameras only

Hik TVI = all brands of TVI, all brands of analog, ONVIF 2MP IP cameras (1 for the 4 ch, 2 for the 8 ch and 16 ch)

according to their website, Dahua will make CVI into tri-brid too...(CVI/analog/IP)

http://www.dahuasecurity.com/products/h ... l-657.html


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Wed Oct 01, 2014 7:13 pm 
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hybrids and tribrids are backwards compatable on the analog side .
meaning they work with 960h , D1 etc.

the only thing backwards compatable about hd-cvi is that if you have an hd-cvi 1080p dvr ,
it will work with hd-cvi 720p camera's .
but if you have a 720p hd-cvi dvr , you can only use 720p hd-cvi camera's .

as far as I know , dahua is the inventor and sole mfg. of hd-cvi hardware .
although you can find hd-cvi equipment with different brand names on them ,
they are all made by dahua .

and as far as I know , hikvision is the inventor and sole mfg. of hd-tvi hardware ,
which is also available with different brand names but are only mfg. by hikvision .

as far as recorded picture quality goes , I do not know if sdi has any advantage over
cvi or tvi . that is what I was searching for when I found this post.


symphony ,
if certain equipment availability and price deter you locally ,
why not order what you really want or need online .
I know 123security offers dahua sdi and cvi products under their
house brand name (cantek) and free shipping as well as very
competitive pricing .


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 Post subject: Re: HD-SDI backward compatibility with analog CCTV cameras
PostPosted: Wed Oct 01, 2014 7:23 pm 
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captainvideo wrote:
hybrids and tribrids are backwards compatable on the analog side .
meaning they work with 960h , D1 etc.

the only thing backwards compatable about hd-cvi is that if you have an hd-cvi 1080p dvr ,
it will work with hd-cvi 720p camera's .
but if you have a 720p hd-cvi dvr , you can only use 720p hd-cvi camera's .
New HDCVI DVR now support 720p full frame & 1080p half of the frame rate

as far as I know , dahua is the inventor and sole mfg. of hd-cvi hardware .
although you can find hd-cvi equipment with different brand names on them ,
they are all made by dahua .
Dahua CVI chip is outsource & can be purchase from main distributor, there are other DVR manufacturers but one of them has already close down.

and as far as I know , hikvision is the inventor and sole mfg. of hd-tvi hardware ,
which is also available with different brand names but are only mfg. by hikvision .
Wrong, here is the manufacturer http://www.techpointinc.net/

as far as recorded picture quality goes , I do not know if sdi has any advantage over
cvi or tvi . that is what I was searching for when I found this post.
SDI @1080p is digital, therefore it is still the best if you can afford it.



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