4x 2mp Dahua chunky preview

Prinler

Prinler

Getting the hang of it
Apr 6, 2017
153
42
I just finished installing all 4 of my Dahua 2MP Starlights. Everything went amazing.
After setting up BI I notice people and cars going by are chunky on the live preview.
The settings are set to 25fps.
 

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Hmm, well the recording is smooth. Its the live preview on the monitor thats seems to be lagging. Live preview isn't recorded. Ill have to snap it with my phone or something, i know no other way to show you.
The video is choppy? Stutters? The car jumps with missing frames? like my preview was set to 4fps not 25 like it is set.
 
Your not watching the live view through an RDP connection are you? BI limits RDP to update once every 5 seconds by default i think.
 
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Post a chunk to youtube so we can see.
 
Do you use Wifi ?
 
SkyLake said:
Do you use Wifi ?
Click to expand...
No WiFi! WiFi bad!
The cameras themselves have no lag. When I am logged into it making adjustments it’s 9seconds till I see a change on the BI screen. My BI is running at 12% and 1gb of ram usage.
 
Click the "Gear" on the upper left to open Blue Iris Options > Cameras (Tab).

What is value is "Limit live preview rate (does not affect recording)" set for?
 
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Prinler said:
No WiFi! WiFi bad!
The cameras themselves have no lag. When I am logged into it making adjustments it’s 9seconds till I see a change on the BI screen. My BI is running at 12% and 1gb of ram usage.
Click to expand...
First match the iframe interval to the fps in your cameras. Second, connect your blue iris pc to the same switch as the cameras, it appears you have network lag and one likely cause is plugging the pc into the router
 
Q™ said:
Click the "Gear" on the upper left to open Blue Iris Options > Cameras (Tab).

What is value is "Limit live preview rate (does not affect recording)" set for?
Click to expand...
25fps the same as the record same as the camera... everything is set to 25fps
 
Last edited:
fenderman said:
First match the iframe interval to the fps in your cameras. Second, connect your blue iris pc to the same switch as the cameras, it appears you have network lag and one likely cause is plugging the pc into the router
Click to expand...
All of the cams connect to the poe switch in my garage. The BI is in my house connected to the garage via a “power line networking adapter” I will check the model when I get back home. Perhaps the 1200mbps isn’t enough?
 
Prinler said:
All of the cams connect to the poe switch in my garage. The BI is in my house connected to the garage via a “power line networking adapter” I will check the model when I get back home. Perhaps the 1200mbps isn’t enough?
Click to expand...
Pretty sure it's the adapter... run a cable.
 
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Prinler said:
All of the cams connect to the poe switch in my garage. The BI is in my house connected to the garage via a “power line networking adapter” I will check the model when I get back home. Perhaps the 1200mbps isn’t enough?
Click to expand...

Have you tested the actual data rate on the powerline? (not what the utility they supply says but real data transfer PC to PC)

If you're saying the recording is flawless then it sounds like the data from the cameras via the PoE switch is reaching the BI system ok but worth confirming the real data rate and see if its impacted by other equipment being used (washer, aircon etc).

Are the cameras using SD cards to locally record/buffer and the BI system catches up on demand? That may hide any network lag, at least in the recordings, but live view would probably show bursts of fast movement (or maybe chunks of), not sure how BI handles that if at all.
 
No sd cards

When I get home I’ll run a wire with the door open and see if it improves. If it does then we will know 100%. If it doesn’t, is there perhaps a setting I messed up with or something I can turn on or off? I’m at 18% with this cpu.
 
Edit: I see your screenshot shows the encoding. Maybe try H264 if possible. I've had similar problems with different encoding.
 
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Okay, I woke up this morning and I ran my cat5e from the POE switch to my gigabit switch.

~ SAME ISSUE CONTINUES ~

CAM > POE Switch > Power Line network adapter > GB Switch > Then one cable to the router and one to the BI computer.


CAM - IPC-HDW5231R-ZE
POE Switch - iCreatin 5-port Active Ethernet POE Switch with 4 PoE ports, 10/100Mbps, IEEE802.3af, 65Watt - http://a.co/eTOxfyz
Power Line Adapters - NETGEAR PowerLINE - XAVB5201 - Up to 500 Mbps
GB Switch - TP-Link TL-SG1008D 8-Port Unmanaged Gigabit Network Switch - http://a.co/4fzYIV6
 
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