Posible problem cvQueryFrame (Bug #2635)

Added by Daniel Suárez over 4 years ago. Updated almost 2 years ago.

Status:Open Start date:2012-12-17
Priority:Normal Due date:
Assignee:- % Done:


Target version:Next Hackathon
Affected version:branch '2.4' Operating System:
Difficulty: HW Platform:
Pull request:


May be a problem when execute the method cvQueryFrame in a diferente thread then the main thread under macOs (Snow leopard 10.6.8).

The problem occur when Execute the method that call cvQueryFrame using the Apple method perforSelectorInBackground (that detach a new thread that execute the method passing as argument). The use should be like these:

[obj performSelectorInBackground:@selector(method) withObject:nil]. In the Method will call cvQueryFrame but ill try to debbug and Always get a null frame if execute using performSelectorInBackground to execute my method in a diferent thread


Updated by Alexander Shishkov over 4 years ago

  • Category set to highgui-video
  • Priority changed from High to Normal

Updated by Alexander Smorkalov over 4 years ago

  • Target version set to 2.4.4
  • Assignee set to Vadim Pisarevsky

Updated by Vadim Pisarevsky over 4 years ago

  • Target version deleted (2.4.4)

Updated by Vadim Pisarevsky over 4 years ago

  • Assignee deleted (Vadim Pisarevsky)

Updated by Kirill Kornyakov over 4 years ago

  • Target version set to 2.4.4
  • Affected version set to branch '2.4'

Updated by Andrey Kamaev over 4 years ago

  • Target version changed from 2.4.4 to Next Hackathon

Updated by Maksim Shabunin almost 2 years ago

Issue has been transferred to GitHub: https://github.com/Itseez/opencv/issues/4473

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