Netcam Studio Crash


#1

Hi,

I’m testing Netcam Studio and I notice regular crashes of the service (almost once a day).
This error occurend on 1.2.7 and also on the last 1.3.1.

You will find in attachment the Windows Events relted to these crashes

Netcam is running on Windows 7 64bits and all cams are RSTP streams.

Please let me know if you need more informations.

Regards,

Fred


#2

I just forgot to mention that execepted these crashes, the program is working fine


#3

Do you have .net framework 4.5.2 or later installed?


#4

Yes, the 4.5.2 is installed.

You will see the details in the attachment below :


#5

Good, that was the easy part ;). A search gives that this problem occur with several other programs also that use the .net framework so probably not only a problem for NCS. It is a lot of forums debating this problem for windows 7. It seems to be an installation problem of the .net framework 4. I am not the expert on this so I hope that Admin can have a look also. Many people suggests to remove the framework and reinstall it again since windows update can create some problem. I am not the expert, but I would do that first.


#6

I removed the .net framework, rebooted the computer and reinstalled the last 4.6.1 version.

I’ll see if it solves the problem.


#7

The crash occurs in the OpenCV library so it’s related to the motion detection.

The mode i suppose Blob since it’s the only one using OpenCV that is still available, i’ll make a few tests here to see if I can reproduce…

How many cameras are using this detection mode, which interval and which resolution ?


#8

You’r right, I use blob detection because it’s the best parameter I found to avoid false positive, especially on night vision cameras with low resolution (I have 5 cameras).

You will find in attachment the parameters I’m using.


#9

What’s the memory usage of the app and do you use the 64-bit version ?

Does it get near or above 1GB of ram at some point?


#10

I’m using the 64 bits version and the service is only using 250 MB of RAM (with no peak as far as I can see in our monitoring system). The CPU is usually between 5 and 10% (Core i3-3220, 4GB RAM)


#11

I didn’t find anything suspect around the threads management and object lock for the blob detector.

I have however added some additional verifications before sending the data to process to OpenCV, not sure it will help but if you have a chance, please give a try to this version (1.3.2 dev) and report back if it helps or if you still have the problems:


#12

Please also tell us if you use the default BUFFERED mode for decoding or if you have switched to VLC decoding


#13

I installed the dev version.

I also checked and it seems that I use the BUFFERED mode. Can you confirm me that this must be configured here :


#14

Yes this is the correct place to look (but if it’s changed you need to reconnect sources or restart ncs).

Still didn’t manage to reproduce the problem so far…


#15

After this update I have the same problem with .Net Runtime Event 1026 and the Service stops:


#16

Normally nothing related to audio encoding has changed so i’m not sure it’s related (+ it’s not the same error that has been reported about OpenCV just in both cases the service stops).

Is it the camera that you already had audio related issues with ?


#17

Nope. This is a Logitech HD Webcam C270 that i run both audio and motion detection on. It was OK up to NCS 1.3.1.


#18

In case of Netcam Studio crash, please reproduce the problem with Netcam Studio X so that you can submit a crash report.

For audio I have updated one library that deals with audio, I will see if I find anything suspicious around this but strange it has any impact. Do you have an idea of the audio format provided by this Logitech Camera (Format, Bitrate, Channels, …) ?

I have tried a Logitech Orbit and it’s fine for both Audio Streaming and Audio Recording.


#19

Packages on dropbox have been refreshed (again), please see if it helps if not I will really need:

  1. Reproduce with Netcam Studio X and send the crash report
  2. Explain when it happens (on recording or on audio playback through browser which are my 2 best guesses)

#20

Ok, thank you. I’ll try that if the crash occurs again.