1 Topic by gg62

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Hi all,
I had problems using 2 identical USB EyeToy Mini Silver (PS2, SCEH-0004 models) webcams togheter in Kinovea (0.8.15 on Windows 7). Using the "One Capture screen" option there are no problems and I can switch between the two cams by means of the "Select Source" command as expected. When I choose the Kinovea "Two Capture screens" option, a second capture screen appear and is black, the status bar of Kinovea reports the two cams properties (but with the same device name), the left one with the working cam at 30 fps and the second at 0 fps. Now if I select the second cam on the right capture screen with "Select Source", the system crashes (Windows). The driver is the one available at http://www.iplayplaystation.com/eyetoy-as-webcam/.
Probably there is a conflict between the two cams at driver level, but I'm not an expert.
Anyone had tried similar double cam configuration?
Cheers,
Gigi

2 Reply by joan

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Thanks for the report.
related thread.

Please enable debug logging (check the pinned thread for how to), or download 0.8.16, which has debug logging by default and also has an updated capture screen, (so it would be interesting to know the behavior in any case).


Having the log would be interesting on its own to assess the feasibility of a "Camera Alias" feature. The idea would be to allow the user to give a descriptive name to a camera source and list the camera by this alias instead of the driver name.
That would be very handy in a multi camera setup, and really helpful with two cameras of the same model like you. The log will help understand if cameras can be uniquely identified.

I created the bug 259 to track this issue. Please attach the logs there.

3 Reply by gg62

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Just uploaded the logs.txt in the bug tracker (259) created after Windows crash, hope this will help. No other log files in the Roaming/Kinovea folder.

4 Reply by joan

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Thanks
The log is pretty terse… there is less than 1 second between opening the screens and the end of the log, with no sign of the issue.

To know if the conflict really is at driver level, you could open one camera in a third party application, and then open Kinovea. If you have the same issue it would point to a driver limitation. (Which still must be handled gracefully, which is not currently the case apparently)

Is there an error dialog window when it crashes ? Does it have more information in it ?

5 Reply by gg62

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Opened one cam in a third party app (SkillCapture by Video4Coach) and launched Kinovea, opened "One Capture Screen" --> Windows crash (BlueScreen, as in previous attempts). After Windows reboot a message tell me something about the crash error (see WinMess.txt uploaded in the bug tracker) and two additional files to look at. I have uploaded these two files (a dump file and a xml) and the last Kinovea log (log2.txt) in the bug tracker. Hope this may help. Cheers, Gigi.

6 Reply by joan

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Thanks for all the logs. I'll have a look and see if I can understand what is happening.
The fact that it blue screens is another indication of a very low level exception, so probably not at application level (especially considering we run on top of the .NET framework), but I'll definitely look into this and learn how to make sense of it.
(Note: I have taken the .dmp file offline as I'm not too sure of what it may contains).