Hi @michelson !

Yes, i finally found this bug report too, but i forgot to post it yesterday. The table which Yoann Lopes gave (in your link) explains what is possible or not to do : http://wiki.qt.io/Qt_5.5.0_Multimedia_Backends.

Thanks for your help again ! I'll use my camera API then.

Have a nice day !

Visual Studio 2013. I'm building against the VS2013 64bit OpenGL libraries (msvc2013_64_opengl).