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 Post subject: HDCVI video
PostPosted: Thu Jan 16, 2014 11:01 pm 
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Here is the latest recording I did with the HDCVI from Dahua, am not really impress with the quality, anyone else tested this and can share your opinion?


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 Post subject: Re: HDCVI video
PostPosted: Fri Jan 17, 2014 3:00 am 
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What cable are you using ?


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 Post subject: Re: HDCVI video
PostPosted: Fri Jan 17, 2014 4:50 am 
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tibovdk wrote:
What cable are you using ?

RG59, on paper HDCVI can transmit signal/audio/rs232 up to 500m using 1 coaxial


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 Post subject: Re: HDCVI video
PostPosted: Fri Jan 17, 2014 5:37 am 
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Seems good quality for a camera over RG59 cable. What length do you have ?


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 Post subject: Re: HDCVI video
PostPosted: Fri Jan 17, 2014 9:11 am 
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tibovdk wrote:
Seems good quality for a camera over RG59 cable. What length do you have ?

Only a short length of about 20m
Here's the night time AVI


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 Post subject: Re: HDCVI video
PostPosted: Wed Jan 22, 2014 5:25 pm 
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You do realize there is a 720p or 1.3MP limitation. Your not going to get 1080p ike HD-SDI


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 Post subject: Re: HDCVI video
PostPosted: Wed Jan 22, 2014 7:14 pm 
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varascope wrote:
You do realize there is a 720p or 1.3MP limitation. Your not going to get 1080p ike HD-SDI

Wrong, look here!
http://www.dahuasecurity.com/products/h ... a-484.html


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 Post subject: Re: HDCVI video
PostPosted: Thu Jan 23, 2014 11:42 pm 
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What don't you like about the image?

How does it compare to HD-SDI?

What camera did you use?


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 Post subject: Re: HDCVI video
PostPosted: Fri Jan 24, 2014 12:06 am 
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msecure wrote:
varascope wrote:
You do realize there is a 720p or 1.3MP limitation. Your not going to get 1080p ike HD-SDI

Wrong, look here!
http://www.dahuasecurity.com/products/h ... a-484.html



My bad ! Last I looked that model was not there. Seems like just last week.

I was referring to :
http://www.dahuasecurity.com/products/hcvr580458085816s-481.html

Which most likely he has. The images looks like 720p. The max res for his Youtube video is 720p and odds are so is the camera. I never thought 720p was worth the money as there is no major WOW factor from 960H.

HDCVI is not the only game in town as other chip manufacturers are creating comparable transmission chips


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 Post subject: Re: HDCVI video
PostPosted: Fri Jan 24, 2014 12:15 am 
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ArnoldS wrote:
What don't you like about the image?

How does it compare to HD-SDI?

What camera did you use?

Too much noise even at day time & when view on 40" it is not acceptable at least to me! BTW, have shown to ordinary user and they say is very nice. Cannot compare with 1080p SDI, since this HDCVI I have is only 720p.
Tested with HDCVI IR dome.

tibovdk wrote:
Seems good quality for a camera over RG59 cable. What length do you have ?

Have tested on a roll of 305m Belden RG6(Belden Part No.: 9116S 0101000/ 9116S 010U1000), perfect signal while the SDI has no signal as expected!


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 Post subject: Re: HDCVI video
PostPosted: Sun Jan 26, 2014 9:56 pm 
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HDCVI is not HD-SDI which is IP camera transmit via coaxial cable. But protocol is unique for they own developing.


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 Post subject: Re: HDCVI video
PostPosted: Mon Jan 27, 2014 12:47 am 
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joseph.chen0312 wrote:
HDCVI is not HD-SDI which is IP camera transmit via coaxial cable. But protocol is unique for they own developing.


Uhhhh......Uhhhhhh.....What?


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 Post subject: Re: HDCVI video
PostPosted: Mon Jan 27, 2014 1:26 am 
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Varascope,

HDCVI is designed for competing against HD_SDI.
We know that HD_SDI carries in nature weakness in that it can not send HD (large amount of video data) video signal over long distance.
HD CVI, owned by Daihua, though not perfect, losing some resolution, claims that it can carry much longer than HD-SDI.


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 Post subject: Re: HDCVI video
PostPosted: Mon Jan 27, 2014 4:00 am 
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Another solution for trasmit IP over coaxial cable which allied by HikVison and Intersil. www.intersil.com/en/products/audiovideo ... /sloc.html.


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 Post subject: Re: HDCVI video
PostPosted: Sun Feb 09, 2014 10:43 pm 
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HDCVI can not compare with HDSDI, both of them is different thing.

It supports 1280H@25fps、1280H@30fps、1280H@50fps、 1280H@60fps、1920H@25fps、1920H@30fps
-Video/Audio/RS485 3in1 signal transmission by coaxial cable
-low bitrate/low comsume
-500-700meters signal transfer

Actually, the quality is not bad in 720p, even with this double cheaper price.
I shared my video recording, you can have a look
HDCVI DVR WEB interface: http://youtu.be/wDKREwC-Hjs
HDCVI IR DOME CAMERA INDOOR: http://youtu.be/Dc-YfEkxd8w


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