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D-Link IP Cameras for Home => DCS-936L => Topic started by: rvgantt on October 10, 2016, 06:35:59 AM

Title: DCS-936L Motion detection false alarms
Post by: rvgantt on October 10, 2016, 06:35:59 AM
Motion detection is triggering on shadows made by sun as is moves throughout the day. Or at least this is my guess as there is no actual motion seen in the recording  begin saved. Morning and evening is the worst. Currently I have the sensitivity set at 50 and I get a trigger every 5 to 10 minutes (sometimes more). If I reduce the sensitivity (below 20) far enough to stop (almost stop) the false shadow triggers, the camera does not trigger when actual motion occurs, i.e. people or cars. I have also tried changing the detection area from full view to only about half of the area. not much changed.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on October 10, 2016, 08:49:40 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)


What happens with the setting of 20?
Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on October 10, 2016, 09:30:59 AM
Hardware Version: A1
Firmware Version: 1.01.05
Region Central

As I lower the sensitivity, the false triggers are reduced but still occur. The lowest I have tried is 20 because at that level, it stopped consistently detecting real motion. I could walk in front of it and it would not trigger, but 10 minutes later it trigger for no apparent reason.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on October 10, 2016, 09:34:26 AM
I would try the next sensitivity value up from 20 and see how that does.

Can you test the camera in a different location temporarily to see if the same thing still happens? Some place where there is no sun shaded area and just actual motion?
Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on October 10, 2016, 09:43:48 AM
I will move the camera and test it. I actually have 2 of these cameras and they are both doing the same thing.

The next sensitivity value up is 21. I wouldn't expect much of a difference, but I can try it on the second camera (the one I don't move).
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on October 10, 2016, 09:49:21 AM
Hmmm, ok. Let us know how it goes. Maybe something D-Link needs to review.  ::)
Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on October 10, 2016, 10:02:41 AM
I opened a case with tech support, but their solution do far is to do a factory default (done...no change) and now they want to reload the firmware. I know they are working down the almighty list of things to try first, so I thought Id try the forum. I cant be the only person with this issue. Ill let you know how it goes. Thanks
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on October 10, 2016, 10:24:46 AM
Yes I would try the manual re-load of FW. Can use this to follow the process:
Link> >FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

This camera is somewhat new so not alot of feedback yet or any other users mentioning this as of yet.  :-\
Title: Re: DCS-936L Motion detection false alarms
Post by: RYAT3 on October 10, 2016, 11:01:43 AM

So this camera is in a window pointing outside?

I don't think you are going to be able to tune out the sun and clouds going by. The camera really only knows the image has changed in some way, and if it's a cloud - it's gone from bright to darker back to bright.

Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on October 10, 2016, 11:35:09 AM
I thought about that, but it also happens on days with no clouds. If it was just a cloud every now and then, I could deal with it. As the sun comes up and the shadow of the house moves across the driveway, it triggers. As slow as this occurs, I figured it would not trigger. The old er camera models have 2 setting that can be adjusted; sensitivity and percentage. This new camera only has sensitivity. I bet the percentage setting would help a lot.
Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on October 25, 2016, 10:35:46 AM
Update: I loaded the new firmware update (1.02) and there is no change to the motion false triggering.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on October 25, 2016, 10:41:25 AM
You might try a different 936L and see if it does the same time or a different model DCS. Possible that maybe the current 936L could have a problem that D-Link support should review.
Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on October 25, 2016, 10:45:20 AM
I have 2 of the DCS-936L cameras. The good news is, they are functioning the same. The bad news is, they are not functioning as I hoped they would (and should IMO). O well, I've had them too long to return, so I turned off the email alerts.
Title: Re: DCS-936L Motion detection false alarms
Post by: svbates on October 25, 2016, 08:13:22 PM
I opened a case with tech support, but their solution do far is to do a factory default (done...no change) and now they want to reload the firmware. I know they are working down the almighty list of things to try first, so I thought Id try the forum. I cant be the only person with this issue. Ill let you know how it goes. Thanks

rvgantt, you are not the only one. i also have two cams and both do the same thing. mine are both interior pointing but trigger all day as the sun changes the light level in the rooms.  i usually get a trigger when they change from day to night mode also. the video clip is like watching Wizard Of Oz. black and white scrne changes to color!  most of the triggers are on more subtle lighting changes as clouds change the light level in the room.
Title: Re: DCS-936L Motion detection false alarms
Post by: Greencat on February 01, 2017, 10:19:19 AM
Any resolution to this problem? I have the same camera and having the same issue. My camera is inside pointing toward an interior wall. With the sensitivity set to 20 I am getting triggers every couple minutes but still can miss a person walking past the camera. I have tried 10 and it reduces the false alarms to just a few a day but misses most people walking by the camera and seems to only detect a person if they stop in front of the camera or are walking very slow. At 15 I still get too many false alarms. At 8 and 9 I stop detecting most people walking past the camera. I have tried reducing the detection area to a small portion of the image but it still behaves the same way.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 01, 2017, 10:26:04 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)


Have you tried a factory reset on the camera and set up from scratch to see if there is any change in behavior?

Any resolution to this problem? I have the same camera and having the same issue. My camera is inside pointing toward an interior wall. With the sensitivity set to 20 I am getting triggers every couple minutes but still can miss a person walking past the camera. I have tried 10 and it reduces the false alarms to just a few a day but misses most people walking by the camera and seems to only detect a person if they stop in front of the camera or are walking very slow. At 15 I still get too many false alarms. At 8 and 9 I stop detecting most people walking past the camera. I have tried reducing the detection area to a small portion of the image but it still behaves the same way.
Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on February 01, 2017, 10:35:50 AM
Not so far. I have also tried everything you mentioned, including factory reset. I'm running FW 1.02. I have given up on trying to use the DLink cameras to detect motion and alert\record. I still record when it "thinks" its detecting something, but I don't text or email. This way I can always go back and look at events just in case. The good news is the the cameras were not very expensive. Next time will will make sure to set them up and test within the first week, so I can return them. I would like to install more, but since the DLink cameras don't perform well (at least for what I want) I haven't. I really don't want to have multiple brands. On the flip side, they do have a nice HD picture when you are viewing them live (during the day).
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 01, 2017, 10:37:18 AM
Have you contacted D-Link support about this on the phone?

Not so far. I have also tried everything you mentioned, including factory reset. I'm running FW 1.02. I have given up on trying to use the DLink cameras to detect motion and alert\record. I still record when it "thinks" its detecting something, but I don't text or email. This way I can always go back and look at events just in case. The good news is the the cameras were not very expensive. Next time will will make sure to set them up and test within the first week, so I can return them. I would like to install more, but since the DLink cameras don't perform well (at least for what I want) I haven't. I really don't want to have multiple brands. On the flip side, they do have a nice HD picture when you are viewing them live (during the day).
Title: Re: DCS-936L Motion detection false alarms
Post by: rvgantt on February 01, 2017, 10:42:30 AM
Yes, more than once. I finally gave up. You can only factory reset, reload FW, and start over so many times. Life is too short.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 01, 2017, 10:48:34 AM
Ok, I'll pass this on to D-Link as well..

Yes, more than once. I finally gave up. You can only factory reset, reload FW, and start over so many times. Life is too short.
Title: Re: DCS-936L Motion detection false alarms
Post by: Mike25 on February 01, 2017, 12:31:45 PM
Having the exact same issues with two DCS-936L's. Constant motion alarms even when set at 20% and dropping the motion area to a bare minimum. It constantly triggers and seems to focus in and out.

Title: Re: DCS-936L Motion detection false alarms
Post by: Greencat on February 01, 2017, 04:25:47 PM
Firmware Version: 1.02.01
Hardware Version: A
Agent Version: 2.1.0-b11
Region: US

I have restored to factory default settings but it did not change the behavior.

Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

  • What Hardware version is your DCS? Look at the sticker behind or under the camera.
  • Link>What Firmware (http://forums.dlink.com/index.php?topic=47512.0) version is currently loaded? Found on the DCSs web page under status.
  • What region are you located?

Have you tried a factory reset on the camera and set up from scratch to see if there is any change in behavior?

Any resolution to this problem? I have the same camera and having the same issue. My camera is inside pointing toward an interior wall. With the sensitivity set to 20 I am getting triggers every couple minutes but still can miss a person walking past the camera. I have tried 10 and it reduces the false alarms to just a few a day but misses most people walking by the camera and seems to only detect a person if they stop in front of the camera or are walking very slow. At 15 I still get too many false alarms. At 8 and 9 I stop detecting most people walking past the camera. I have tried reducing the detection area to a small portion of the image but it still behaves the same way.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 01, 2017, 04:48:57 PM
Ok, I've passed this on to D-Link, it's under review. All I can do for now.
Title: Re: DCS-936L Motion detection false alarms
Post by: Mike25 on February 01, 2017, 07:41:03 PM
Hardware Version A
FIrmware - 1.02.01
Agent Version 2.1.0-b11
Region - US

I have tried multiple factor resets on all cameras.



Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

  • What Hardware version is your DCS? Look at the sticker behind or under the camera.
  • Link>What Firmware (http://forums.dlink.com/index.php?topic=47512.0) version is currently loaded? Found on the DCSs web page under status.
  • What region are you located?

Have you tried a factory reset on the camera and set up from scratch to see if there is any change in behavior?

Any resolution to this problem? I have the same camera and having the same issue. My camera is inside pointing toward an interior wall. With the sensitivity set to 20 I am getting triggers every couple minutes but still can miss a person walking past the camera. I have tried 10 and it reduces the false alarms to just a few a day but misses most people walking by the camera and seems to only detect a person if they stop in front of the camera or are walking very slow. At 15 I still get too many false alarms. At 8 and 9 I stop detecting most people walking past the camera. I have tried reducing the detection area to a small portion of the image but it still behaves the same way.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 02, 2017, 06:50:19 AM
Thanks for the additional info. I've passed this on to D-Link for review. I presume they will be having a look in there labs.
Title: Re: DCS-936L Motion detection false alarms
Post by: giraffe8888 on February 05, 2017, 09:28:16 AM
Hello,

Having exact same problem with 2 cameras.
Started with a DCS-935L and bought a DCS-936L with same results.
Updated firmware during setups.
Pointing at an angle from an inside window towards my front door.
Set trigger to motion only and have tried sensitivity at different levels all the way down to 1%.
I set it to daylight only so it stopped sending during the night but starts promptly as soon as sun starts peeking over the horizon.
I noticed during playback of attached e-mail recording that image seems to adjust (repaint?) slightly in the middle of the 10 seconds so I suspect that is triggering the motion. This is not sun or cloud induced.
Title: Re: DCS-936L Motion detection false alarms
Post by: Mike25 on February 05, 2017, 12:46:19 PM
Still having same issue. Infuriating. Can turn it down to 1-5% and it will still focus at certain times of the day. Maybe a firmware update would help it.  Need help.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 05, 2017, 12:57:17 PM
Thank you for the detailed information. I'll pass this on to D-Link for review.


Hello,

Having exact same problem with 2 cameras.
Started with a DCS-935L and bought a DCS-936L with same results.
Updated firmware during setups.
Pointing at an angle from an inside window towards my front door.
Set trigger to motion only and have tried sensitivity at different levels all the way down to 1%.
I set it to daylight only so it stopped sending during the night but starts promptly as soon as sun starts peeking over the horizon.
I noticed during playback of attached e-mail recording that image seems to adjust (repaint?) slightly in the middle of the 10 seconds so I suspect that is triggering the motion. This is not sun or cloud induced.
Title: Re: DCS-936L Motion detection false alarms
Post by: RYAT3 on February 05, 2017, 01:55:20 PM
I noticed during playback of attached e-mail recording that image seems to adjust (repaint?) slightly in the middle of the 10 seconds so I suspect that is triggering the motion. This is not sun or cloud induced.

As an attempt at a work around, remove the motion detection from this middle area.
Title: Re: DCS-936L Motion detection false alarms
Post by: giraffe8888 on February 05, 2017, 07:42:30 PM
Hi Ryat3.

Sorry but I meant at the mid point of the recording (meaning at 5 seconds of the 10 second video).
Not the middle of the picture.
I have it set to record 5 seconds prior to the motion and 5 seconds afterward for a total of 10 seconds.
The image repaint is the entire screen, like it was resetting itself or something.
Title: Re: DCS-936L Motion detection false alarms
Post by: Mike25 on February 19, 2017, 12:25:02 PM
What a truly poorly executed product. Nothing ever works correctly. Still getting 90% false motion detection with 15% sensitivity at certain parts of the day when the camera constantly refocuses. Sensitivity is set so low that it doesn't pick up actual motion when someone walks to the door at times. Just ridiculous.
Tech support has been useless.  Always say they will call back with a solution and have not followed through one time.

Still can't play back video clips on iPhone through the D-link app for any of my three cameras. Just terrible.
Title: Re: DCS-936L Motion detection false alarms
Post by: Greencat on February 20, 2017, 08:19:25 AM
I worked with tech support and they sent a refurbished 936L and it has the exact same issues as the original. It is detecting motion constantly even with the sensitivity set below 10%. I have 2-942L and 1 960L cameras which work great in the same place. The 936L just will not work in low-light scenarios. It appears that the video compression is creating patches in the image that are triggering motion detection.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 20, 2017, 08:51:32 AM
Thanks for the feed back and info. I'll pass this on to D-Link for review.

I presume for now that motion detection should not be used.

I worked with tech support and they sent a refurbished 936L and it has the exact same issues as the original. It is detecting motion constantly even with the sensitivity set below 10%. I have 2-942L and 1 960L cameras which work great in the same place. The 936L just will not work in low-light scenarios. It appears that the video compression is creating patches in the image that are triggering motion detection.
Title: Re: DCS-936L Motion detection false alarms
Post by: Mike25 on February 20, 2017, 09:31:30 AM
"I presume for now that motion detection should not be used."

Rendering the camera useless as a security device.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on February 20, 2017, 09:34:41 AM
I recommend that if you 936L is not working for you, then a replacement would be needed of a different model camera. This issue will need to be reviewed by D-Link support.

I've passed this on to D-Link for review.

Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on March 03, 2017, 06:29:01 AM
I've passed info to D-Link for review. I hope they will have a look. We may need some more information to help them reproduce this issue. placement, time frames of false alarms and camera configurations. I'll let you know.
Title: Re: DCS-936L Motion detection false alarms
Post by: FurryNutz on April 05, 2017, 06:35:04 AM
http://forums.dlink.com/index.php?topic=66603.0 (http://forums.dlink.com/index.php?topic=66603.0)
Title: Re: DCS-936L Motion detection false alarms
Post by: GreenBay42 on June 02, 2017, 12:25:43 PM
BETA Firmware for testing --> http://forums.dlink.com/index.php?topic=66821.0 (http://forums.dlink.com/index.php?topic=66821.0)