Error 946

[Koushik Das]

Hi, 

I am new to idTracker, Once I try to run the video, it has some error when I tried to run the video. My video on crayfish. I want to track multiple crayfish (10 or more ) video length is 1hr.

Can someone tell me what the error means and what I might do to correct it? I have tried encoding the video as mp4 and avi, and also tried increasing brightness and contrast to make it more black and white. But I keep getting the same error. 

Thanks in advance for advice, and please excuse multiple messages because I also sent a similar email to bugs.id...@gmail.com.

Cheers, 

Koushik