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Author Topic: Re: DCS-2332L - Motion Detection Issue  (Read 17320 times)

BelgianEvo

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Re: DCS-2332L - Motion Detection Issue
« on: February 01, 2014, 07:12:07 AM »

Hey guys,

I'm glad i found this thread.

I have purchased this camera a few weeks ago and i'm NOT happy with it so far.
I also have a DCS-5222, and that camera is working 500times better then the 2332L

Here are the problems i have with the 2332L :

- After less then 24hours it stops motion detecting and records strange avi files on the SD card. I've set the max file size to 5000kb, and after it starts doing strange things they only get to 1990kb and are like 'still' movies. When i open them they are like 0.5 frame/sec movies or even less...... :-/

- When switching from day to night mode the motion detection goes crazy and starts recording continiously because of the grainy picture. My DCS-5222 doesn't have this problem and works for months without even touching the setup menu.... With the 2332L you have to manually change the settings each day/evening to make it work :-/ I don't think that is meant to be with a security cam.

- There is no option to "loop recording" on the SD card while using motion detection. The "loop" option is only available when recording mode is used but this option record continiously. So after the SD card is full it's "game over" with motion detection recording.

So in short :

- Please fix the day/night motion detection issue (so it works like the DCS-5222).
- Implement loop recording while using motion detection
- Make it able to play the recorded files with Dlink Lite app (it works with the 5222, so why not with the 2332)
- Make it possible to switch off the saving of .log files on SD card/FTP server. Every time an event happends it also daves a .log file to my SD card/FTP server and allot less userfriendly to browse to all those useless files.
- Maybe let us draw more then 1 motion detection pattern and configure each pattern different. For example, when the upper right corner detects motion -> send email......   When the lower left corner detects motion --> Make snapshot and upload to FTP etc...

I want to use this at my front door and only receive an email when someone is at my front door or driveway, but also detect motion on the street but not getting email from that motion detection.

I hope this is a bit understandable :) My english is not that good.
« Last Edit: February 01, 2014, 07:18:56 AM by BelgianEvo »
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rstark18

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Re: DCS-2332L - Motion Detection Issue
« Reply #1 on: February 01, 2014, 10:19:35 AM »

- After less then 24hours it stops motion detecting and records strange avi files on the SD card. I've set the max file size to 5000kb, and after it starts doing strange things they only get to 1990kb and are like 'still' movies. When i open them they are like 0.5 frame/sec movies or even less...... :-/

This happened to me also. A 1 minute unplug seems to have cleared it up.
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BelgianEvo

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Re: DCS-2332L - Motion Detection Issue
« Reply #2 on: February 01, 2014, 10:22:18 AM »

This happened to me also. A 1 minute unplug seems to have cleared it up.

It happend to me 4 times in a week now. :-(
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rstark18

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Re: DCS-2332L - Motion Detection Issue
« Reply #3 on: February 01, 2014, 11:49:41 AM »

It happend to me 4 times in a week now. :-(
You should post this problem in a different thread so we can discuss it. This one should be just for firmware requests.
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JavaLawyer

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Re: DCS-2332L - Motion Detection Issue
« Reply #4 on: February 02, 2014, 10:49:04 AM »

You should post this problem in a different thread so we can discuss it. This one should be just for firmware requests.

Done. . . last several posts are now a new thread...  ;)
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rstark18

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Re: DCS-2332L - Motion Detection Issue
« Reply #5 on: February 02, 2014, 02:59:14 PM »

Do you have a strong wifi signal to the 2332?
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BelgianEvo

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Re: DCS-2332L - Motion Detection Issue
« Reply #6 on: February 03, 2014, 03:24:49 AM »

Yep the signal is very strong.
The router is inside behind the window and about 1.5 meter away from the camera i presume.

I've done some experimenting the past days and so far the camera works fine in the dark.

I've set the "Max Gain" to 21 instead of the 24 that is default.
So far no false motion detected.

Now i'm upping the sensivity every day a bit to where it does not detect false motion.

So far these settings work :

Sensitivity : 75%
Percentage : 4% (about 85% of the window is marked in red)

Anti Flicker : off
Mirror : off
Flip : off
Power Line : 50Hz
WB : Auto
Exposure : Auto
Max Gain : 21
Denoise : 0
Bright : 4
Contrast : 4
Saturation  : 128
Sharpness : 0

These settings work for me in the dark without detecting false motion.
Next night i'm gonna try sensitivity at 78%

Grz
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hbien03

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Re: DCS-2332L - Motion Detection Issue
« Reply #7 on: February 26, 2014, 02:33:51 PM »

I tried a few simple experiments and discovered the following:
The "Percentage" setting on the motion detection I believe refers to the percentage of your selected monitored area having motion detected and not to the fraction of each small square used for motion detection. To test this, I used a "Sensitivity" 100% and "Percentage" of nearly 100% and moved a large object in front of the camera. Motion triggers after almost the entire frame is occluded by the object. If, on the other hand, I compute the percentage required for just one column of the squares used for motion detection (in my case it was 3%) and set "Percentage" to 3% (again with Sensitivity 100%) I can get motion to trigger after just a tiny fraction (about one column's square width) occluded. My recommendation, then, for setting motion parameters is:

1) Determine the smallest size of the object you wish to trigger motion in terms of the number of square motion boxes. As a guide, this camera has a 32 box width and 16 box height to cover the entire area. Once you know how many boxes would cover the smallest-sized object, you can then perform the simple math [min # boxes to trigger] / [total # boxes selected for monitoring] x 100 to get the "Percentage" parameter.

2) Once you've set the minimum size for motion, the next step would be to fine-tune the sensitivity. The higher the sensitivity setting (closer to 100%), the easier it is to trigger motion. If you get a lot of false motion triggers, you can decrease the sensitivity.

3) If you still get a lot of false triggers and cannot find a suitable Sensitivity setting, you may want to re-consider the smallest size of object required for detection. In general, the higher you set "Percentage" the larger the object will have to be to trigger motion and therefore the less likely you will get a false trigger. On the other hand, small objects, e.g. dogs or distant objects, may then fail to trigger motion.

Another tip: since I'm using the camera indoors facing out (still have to figure out how to run the power wire outside), I find that the IR illuminator causes severe reflections at night. Therefore, I've turned off the built-in IR illuminator (which by report is rather weak anyway), still enabled the IR-cut filter to be disengaged ("night mode"), but then used "Custom1" for the "Exposure" setting under "Image". I found that leaving the Exposure to "Auto" does not enable the camera to slow substantially down in low light conditions, and that "Custom1" allows me to specify the full range of the camera shutter (down to 1/8th of  a second and up to 1/100,000th of a second) to better enable low-light imaging. Note that the longer exposure reduces the fine speckle noise you get at night and therefore reduces the amount of false motion triggers under low light conditions.

Hope this helps others in setting the "Motion" parameters.
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rstark18

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Re: DCS-2332L - Motion Detection Issue
« Reply #8 on: February 28, 2014, 08:34:40 AM »

then used "Custom1" for the "Exposure" setting under "Image". I found that leaving the Exposure to "Auto" does not enable the camera to slow substantially down in low light conditions, and that "Custom1" allows me to specify the full range of the camera shutter (down to 1/8th of  a second and up to 1/100,000th of a second) to better enable low-light imaging.

How do the night time images look? With the long exposure (1/8sec) do you get motion blur on the video. I am concerned about being able to identify faces if it records someone at this slow exposure.
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hbien03

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Re: DCS-2332L - Motion Detection Issue
« Reply #9 on: March 02, 2014, 07:22:43 AM »

How do the night time images look? With the long exposure (1/8sec) do you get motion blur on the video. I am concerned about being able to identify faces if it records someone at this slow exposure.

That's a hard question to answer. I live in an apartment complex with generous night-time lighting so things generally appear ok for me. However, if you are in a rural or just very dark environment, then I would suspect you can get motion blur. Since the JPEGs generated do not indicate for me the actual shutter speed used, I cannot tell you if 1/8th of a second generates motion blur.

If you are concerned with motion blur, then I would recommend either testing it under your lighting conditions at various speeds, e.g. a dog running by becomes a streak versus a walking person might be ok. Otherwise, the best deterrent I guess would be bright lights and camera so that the potential intruder would be warned off as well as giving you a very clear shot for identification purposes.
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