Are you sure you are not looking at the substream? If your network cannot keep up, the gui will automatically switch it to substream.
IPC-T2431T blurry/pixelated image during day
- Thread starter d5775927
- Start date
Currently, i'm using H264, will try H264B (it doesn't have H264H).
do I need to restart after disabling IVS?
I use a Dahua NVR, yes I see it both on recorded videos and when using live stream (main stream).
Will it make it too sensitive, to wind noises?
I'm monitoring audio mutation event (this way I detect if a truck or heavy machinery is moving in the street or any other weird loud noises)
A few months, but this pixelation doesn't happen always, mainly with cars so I don't think it's related to dirty lens.
I'm using this to watch the main stream:
Code:
vlc --rtsp-tcp 'rtsp:/myuser:mypassword@192.168.100.5:554/cam/realmonitor?channel=4&subtype=0'I can try again with the Iframe, maybe I didn't configure it properly, or maybe a IPC restart is required?.
What Iframe/framerate value to use on the mainstream and on the substream?
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I'm already running with this configuration:
Still seeing pixelized image on car movement during the day.
SpacemanSpiff
Known around here
Can you connect to your network a few hops closer to the camera and monitor the feed to see if it is any better?
Need to check tomorrow on daylight.
But I see the recording is blurred as well.
This is the recording config:
I can but will take me some time, the NVR is on different floor than my PC.
Guessing this is not related to the network hops, since the IPC is connected with one cable directly to the NVR which records the main stream to disk.
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You keep adding more to the mystery. Watching on VLC, now an NVR is in the mix.
It is becoming clear it isn't a camera issue but rather an issue within your network or peripherals.
Not all NVRs are created equal and a budget NVR can be overloaded easily.
What NVR model and brand?
Time for a network topology map showing all devices and and demands on the system.
Try the camera with a power supply connected directly to a computer and what does live view in the camera gui look like - I bet it will be fine.
It is becoming clear it isn't a camera issue but rather an issue within your network or peripherals.
Not all NVRs are created equal and a budget NVR can be overloaded easily.
What NVR model and brand?
Time for a network topology map showing all devices and and demands on the system.
Try the camera with a power supply connected directly to a computer and what does live view in the camera gui look like - I bet it will be fine.
NVR - DHI-NVR4108-8P-4KS2
IPCs - 2431T & 5442ZE
The NVR is on its own VLAN without internet access.
The Raspberry Pi is on the same VLAN an the NVR and the main VLAN (with internet access).
The Raspberry Pi is responsible of:
1. NTP server
2. Subscribing to events - from the IPCs and pushing to me to Telegram (Raspberry Pi reaches the IPC using the NVR - virtual host feature)
3. Notifying me if a camera goes offline or its time is out of sync with other IPC or Raspbberry Pi
The raspberry Pi supports Vlans, so with one physical port, it can be on both Vlans.
I can try with power supply, but I'm bit lazy to do electric tape sealing and dialectic grease again (will take me half a day, to remove and install and check with passing cars).
I don't have a POE injector, I wanted to buy one, but didn't buy eventually.
Never tried, I can try tomorrow.
bigredfish
Known around here
I'm seeing similar artifacts on a 5241 that stays in color during the day. Not quite as bad, but they're there.
Did some testing and while I dont have the answer, I have noticed some things. Now some will say it doesn't matter because we're not making Hollywood movies, and I get that. But it is an interesting issue that i dont see on 5442's...
Here's a couple of samples
My normal daytime LPR settings on a 5241 Z12
8192, CBR, H.264h and 30FPS
Notice the artifacts/blur immediately behind the vehicle. They clear up within 3-5 frames or maybe 1/2-1 second. There is also some showing up on the bottom half of the vehicle
Before >>>> Red outline area >>>>>> Gone
So my first assumption was Gain being auto adjusted by the camera due to the 0-50 range I had set. So I fixed Gain at 30/30. Actually saw some improvement, especially on the car itself, but the trailing artifacts were still there
Video from that one. If you run it slowMo or frame by frame, you'll see the artifact trail immediately behind the car in the grass
View attachment HOA Entr_ch3_20220807121523_20220807121537.mp4
Did some testing and while I dont have the answer, I have noticed some things. Now some will say it doesn't matter because we're not making Hollywood movies, and I get that. But it is an interesting issue that i dont see on 5442's...
Here's a couple of samples
My normal daytime LPR settings on a 5241 Z12
8192, CBR, H.264h and 30FPS
Notice the artifacts/blur immediately behind the vehicle. They clear up within 3-5 frames or maybe 1/2-1 second. There is also some showing up on the bottom half of the vehicle
Before >>>> Red outline area >>>>>> Gone
So my first assumption was Gain being auto adjusted by the camera due to the 0-50 range I had set. So I fixed Gain at 30/30. Actually saw some improvement, especially on the car itself, but the trailing artifacts were still there
Video from that one. If you run it slowMo or frame by frame, you'll see the artifact trail immediately behind the car in the grass
View attachment HOA Entr_ch3_20220807121523_20220807121537.mp4
bigredfish
Known around here
So next I thought I'd play with Iframe interval. Typically I match Iframe interval to FPS. But I had seen some analysis about extending Iframe to 3-5x that of FPS, So I set it at 150 with my normal 30FPS framerate.
Still there but less pixelization and seems to dissipate faster?
Video (Go full screen)
View attachment HOA Entr_ch3_20220807131001_20220807131017.mp4
And another without companion pics but its noticeable at full screen slomo or frame by frame
View attachment HOA Entr_ch3_20220807132851_20220807132905.mp4
Still there but less pixelization and seems to dissipate faster?
Video (Go full screen)
View attachment HOA Entr_ch3_20220807131001_20220807131017.mp4
And another without companion pics but its noticeable at full screen slomo or frame by frame
View attachment HOA Entr_ch3_20220807132851_20220807132905.mp4
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