Posted: 6/30/2009 9:54:07 AM EDT
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Howdy, I need a little geek input.
I was wondering if anyone had any idea how to get this done. I have ten cameras all recording at the same time to a DVR. I need to be able to watch those cameras from another computer in another location. I can't get any cable company to run a wire out to me and don't think any of the satelite ISPs offer anything close to the upload speed I would need. Any guess as to the amount of bandwidth the cameras would need? What should I do? How much would it cost? Any help would be great, just use small easy words. I am really at a loss. |
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Quoted: Howdy, I need a little geek input. I was wondering if anyone had any idea how to get this done. I have ten cameras all recording at the same time to a DVR. I need to be able to watch those cameras from another computer in another location. I can't get any cable company to run a wire out to me and don't think any of the satelite ISPs offer anything close to the upload speed I would need. Any guess as to the amount of bandwidth the cameras would need? What should I do? How much would it cost? Any help would be great, just use small easy words. I am really at a loss. Hire subnet. |
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If you're using a security system type DVR, it may already have a web interface, many of them do. Check your DVR manual. Does it have an ethernet port?
ETA: If your DVR supports it, you'll be able to configure your DVR with an IP address, configure your router to allow remote access, watch your cams via internet browser from any location. All of this should be outlined in your manual. |
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Quoted:
If you're using a security system type DVR, it may already have a web interface, many of them do. Check your DVR manual. Does it have an ethernet port? ETA: If your DVR supports it, you'll be able to configure your DVR with an IP address, configure your router to allow remote access, watch your cams via internet browser from any location. All of this should be outlined in your manual. The problem Is we don't have any internet access at the site where the DVR is. I know we could get satellite but I think the upload speed would be to low. |
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Quoted:
Whats the bitrate of the video? I have no idea  . This may be worthless but I did something.
I hooked the DVR up to a PC so I could watch the feed on the monitor. In three minuets the Local Area Connection activity on the PC showed it as having received 19,000,000 bytes. What kind of upload speed would we need to handle that? |
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How far away is the "computer in another location". Is it onsite? You dont necessarily need internet access, you just need to create a LAN (local area network). If everything is within a couple hundred of feet of each other this could be setup very easily and cheaply.
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Not enough details to give you an accurate guess. The bitrate of the camera is important. If you camera needs 512 kbps then you need a link that has that at least that much uplink for 1 camera. Even if you get a sat connection that has the uplink bandwidth you may still run up against capacity quotas. Same with cellular internet. This stuff suffers with hardlined remote installations let alone wireless. Reccomend motion activated recording at a low bitrate acheived through slow framerate. -Foxxz |
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Quoted:
Quoted:
Whats the bitrate of the video? I have no idea . This may be worthless but I did something.
I hooked the DVR up to a PC so I could watch the feed on the monitor. In three minuets the Local Area Connection activity on the PC showed it as having received 19,000,000 bytes. What kind of upload speed would we need to handle that? That's not particularly fast for video. Considering that a plain vanilla security camera has a resolution of 640x480 pixels. Most security cameras are 8-bit, so each image, in monochrome, is ~ 1/3 MByte. In color, though, it's 3 times as large (1 byte per pixel for each of R, G, and B), or just less than 1MByte per frame. At a "live" speed, 30 fps, each camera would stream 30 MBytes per second, or for 10 cameras simultaneously, 300 MBytes per second. For your example, this would mean just under 18 GBytes per minute, or 54 GBytes per 3 minutes. Thank goodness for compression, huh?
Even with compression, it seems doubtful that you are receiving live, full resolution video. So, the question is, what are you actually getting? If you can figure out the actual frame speed, the transmitted resolution, and the compression scheme, I can probably get you to where you want to be. |