QMovie displays only last frame

[d_stranz]

To show the movie you can just do: movie.start();

From the context of the OP, I assumed that images from the animated GIF were not contained in a QMovie, but in some other data structure which had to be accessed manually. If it is in fact a QMovie, then movie.start() would obviously be the right choice.

It's Monday morning here, not fully awake yet.

[high_flyer]

From the context of the OP, I assumed that images from the animated GIF were not contained in a QMovie, but in some other data structure which had to be accessed manually.

But then it wouldn't make much sense to jumpToFrame() in the movie, if it is not containing the frames...
Indeed the OP's choice to loop through the movie while wanting to jump to a specific frame eludes me.

[dbrayford]

I am using the loop and jumpToFrame() because the the frame I want to jump to isn't in sequential order (2, 5, 1, 10, 30, 6 ...).

[high_flyer]

I am using the loop and jumpToFrame() because the the frame I want to jump to isn't in sequential order (2, 5, 1, 10, 30, 6 ...).

Still, you are jumping to many frames in the loop, not to *a* frame, and you see the last one you jumped to.
First loop over your vector, find your desired frame index, and then, outside the loop do the jump to that index.

[d_stranz]

I am using the loop and jumpToFrame() because the the frame I want to jump to isn't in sequential order (2, 5, 1, 10, 30, 6 ...).

Well, then the QTimer method I suggested would let you do that. Whatever you choose to do, you have to let Qt's event loop process the paint event generated by the jumpToFrame() call, otherwise you'll only see a frame change when Qt is finally allowed to process events. The QTimer method does that automatically for you since the whole thing is handled within the event loop concept.