Lag when viewing CCTV through a Network

[mstizomad]

Hi,

When i view my 8 x 1080p CCTV cameras directy via a DVI or HDMI cable, i get very responsive live feeds with no lag.

But when i view the same through a Cat 6 network cable plugged directly between my DVR and my Router, i get 1-2 seconds of lag on all feeds.

How can i resolve this lag? Which i assume is a bandwidth issue?

Thanks

 

[sparkymarka]

Viewing on what ?

 

[mstizomad]

Viewing on what ?

Hi. Viewing on a PC monitor via internet explorer.

PC wired to router via cat6 cable, router wired to Cctv DVR via cat6 cable.

Maybe IE is causing the lag?

 

[Nozzle]

Is the router 10/100 MBit, what is the actual link speed to the PC, and are you trying to see all 8 HD channels at once?

Nozzle

 

[bernardgreen]

on a PC monitor via internet explorer.

PC wired to router

This suggests that possibly the images are going from camera to screen via a remote node on the internet and not just via the router. The delay could be the transit time to and from that remote internet node.

 

[sparkymarka]

Also depends on PC processer speed and graphics card , do you log on via an internal IP address or DNS server name ?

 

[mstizomad]

Hi all,

Thanks for your replies. My DVR is connected to the back of my Virgin Media home hub and then from the Hub to the back of my PC. Both with short 1m gold plates cables.

My PC CPU has 8 x Cores @ 4.5ghz, 64GB of RAM and a 2GB Graphics Card. So maybe it's the graphics card?

I login via the IP address of the DVR and then some of the software from the DVR loads into IE.

The router is capable of over 1000 mbps on all of it's LAN ports and yes i am trying to view all 8 cctv feeds at the same time.

 

[sparkymarka]

1-2 sounds about right if you are streaming on the highest quality

 

[Nozzle]

do ctrl alt del, go to the task manager and then the networking tab, and you can see there how fast the ethernet link speed is - your router may be 1GBit, but if there is a single 10/100 device plugged in, it will degrade everything down to that speed.

Nozzle

 

[Nintendofan]

do ctrl alt del, go to the task manager and then the networking tab, and you can see there how fast the ethernet link speed is - your router may be 1GBit, but if there is a single 10/100 device plugged in, it will degrade everything down to that speed.

Nozzle

you sure about that?

 

[Nozzle]

nope! You?

Nozzle

 

[Nintendofan]

nope! You?

Nozzle

me? yes.

 

[Nozzle]

That's sorted then. So what's the OP's problem?

Nozzle

 

[Nintendofan]

That's sorted then. So what's the OP's problem?

Nozzle

I don't know as it could be various things and without knowing more details its impossible to tell, my remarks weren't to the OP anyway they where regarding the incorrect statement about network devices and speed

 

[motorbiking]

its possible the virgin box is 10/100 port not gibabit. Its unlikely to be the PC with that spec. Have you tried pinging the cameras? Alternatively its whatever device is doing the streaming/file management video conversion. (the DVR).

Have you tried downgrading the video codec?

8 cams @ H.264 compressed is about 80mbit/s which is pretty close to the limit of a 100mbit network, but I reckon the issues is the transcoder. Unlike the Haswell based PC, its probably got a low power ARM phone proc doing the work