Pixilation on Motion Detection

SiMoore

n3wb
Joined
Mar 28, 2016
Messages
6
Reaction score
0
Hoping someone will be able to assist here I have an issue that has arisen in the past few months that I simply cannot work out after changing many settings. When motion is detected the video recorded becomes pixilated, up until this point it is recording 24x7 with no issues, I thought it may have been the camera or NVR was strained so i've changed the settings many times but to no avail.

Details of system:
NVR = DS-7604NI-E1/4P (Firmware 3.4.98)
Camera = DS-2CD2332-I (Firmware 5.4.5)

Sample from the automated email as attached, you'll notice that as motion is detected the first 2 snapshots are fine and then it turns all pixilated/blocky which is also the same on the recorded file.

Current Camera settings:

Video/Audio
Resolution: 2048*1536
Bitrate: Variable
Video Quality: Higher
Frame Rate: 15
Max Bitrate: 4096
Video Encoding: H.264
I Frame Interval: 50
SVC: Auto

Event
Enable Motion Detection - enabled
Enable Dynamic Analysis for Motion - enabled
Intrusion Detection - enabled
Line Crossing Detection - enabled

Any ideas on what I can try or further questions please let me know.

Thanks!
 

Attachments

Pierrre

n3wb
Joined
Jun 8, 2017
Messages
17
Reaction score
13
Hi SiMoore,
Only time I've had anything like that it was 2 different things. 1st time was selecting h265+ , recording 24/7 at 1fps and changing to 20fps. Changed it back to h265 and its fine. The other time was a new install tvi system with the cusomters old hard drive in. Similar artifacts and as the drive was the only thing i didnt fit I changed it for a new one and the problem disappeared.
Probably doesnt help but if its been fine all this time it sounds like a fault rather than a setting ?
 

Spirch

Getting the hang of it
Joined
Dec 7, 2018
Messages
129
Reaction score
60
Location
Canada
i'm a real newbie in ip camera but try to lower the i-frame interval to match the fps, my understanding, it would take 3.33 seconds of bad video to correct glitch

50 / 15 = 3.33 seconds

I hope if i'm wrong, someone will jump in and correct me
 

SouthernYankee

IPCT Contributor
Joined
Feb 15, 2018
Messages
5,170
Reaction score
5,320
Location
Houston Tx
set Iframe to 15.
are you running event detection in the camera or in a VMS or NVR ?
If changing the IFRAMe does not fix it, set quality to Medium.

let me know the results.
 

FoxCR

Getting the hang of it
Joined
Nov 6, 2018
Messages
153
Reaction score
25
Location
USA
Hi there, how are the notifications during the day or How is the video play back when logged in to the NVR physically.
Also do consider that, that particular camera may have poor light light performance an what you are seeing of the camera trying to deal with the image noise.
I think you I-frame number is high. I usually set it to twice my FPS.

I could be wrong but cameras works extra hard in light light.
 

FoxCR

Getting the hang of it
Joined
Nov 6, 2018
Messages
153
Reaction score
25
Location
USA
Setting the i-frame equal to your FPS will make the camera work harder also, but give it a try.
 

Searay

Young grasshopper
Joined
Feb 3, 2019
Messages
35
Reaction score
8
Location
46373
Max bit rate seems a bit low for that resolution

I Frame IF set to low will cause the picture to pulsate ( clear to grainy ) in my experience ( definitely Not Your Problem )

Verify Stream Encoding is correct on MAIN Continuous & Event

H.265 if available seems to work and or display a better quality in my experiance
 

VisionxOrb

Getting the hang of it
Joined
Dec 17, 2018
Messages
52
Reaction score
31
Location
United States
I had that problem before I realized the recording settings were separate between continuous and event. the default event was low every time an even occurred the resolution and bitrate dropped.
 
Top