[Interest] how to get QMovie size without playing it first?

[Frank Rueter | OHUfx]

Hi all,

I am playing with a gui that shows several QMovies which may have 
arbitrary sizes/aspects, and I'd like them all to live within the same 
sized QLabel for a neat layout.
So in order to scale them properly I assume I need to use 
QMovie.setScaledSize()?!
But the latter has no facility to keep the movie file's aspect ratio, so 
in order to use something like this:
     fileQSize.scale(displayQSize, QtCore.Qt.KeepAspectRatio)

I need to know the movie file's size/aspect.

It would seem that QT does not know the file's size until it has been 
played, and some examples I have seen on the web do this:
     movie.start()
     movie.stop()
     movie.currentImage().size()

or:
     movie.jumpToFrame(0)
     movie.currentImage().size()

Is this  the way to go or is there a tidier way?

Thanks in advance,
frank


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