2 consequent [QTMovieView setMovie:] calls => crash

Subject: 2 consequent [QTMovieView setMovie:] calls => crash
From: Sergey Shapovalov <email@hidden>
Date: Wed, 18 Jul 2007 13:20:33 +0400
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Hello all.

I am new to this list, so sorry if my question has been already discussed. However, I failed to find an answer with a brief search.

In my project, I have a QTMovieView, and m_movieView is an outlet pointing to it. When I run the following code, my application crashes:

NSError* err = nil;
QTMovie* my_movie = [QTMovie movieWithFile: kPathToMyMovie error: &err];
[m_movieView setMovie: my_movie];
[m_movieView display];
[m_movieView setMovie: nil];
[m_movieView display];

This is the code from a test sample application, where the crash is 100% reproducible. (Mac OS X 10.4.10, QuickTime 7.1.6, iMac Intel Core 2 Duo). If anyone feels interested, I can send the whole project (very small indeed) in a private e-mail.

In real life (with my real project) the code is different of course, but the situation is mostly the same: I set a movie in the view, and if I immediately after that reset it to nil, the application crashes. If there is a delay between these 2 steps (or even if I pass this code step by step in the debugger), no crash happens.

My question is: what am I doing wrong? Why does my app crash here? How can I avoid such crashes?

Best regards,
Sergey Shapovalov.
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