stageVideo with Retina display shrinks app

I'm using Flash CS6 with AIR 18.0.0.199 for iOS.

My stage size is 1024x768 and the app works perfectly on my 1024x768 resolution iPad (iPad mini 1st generation).

However on all retina 2048x1536 resolution iPads the entire app permanently shrinks to 1/4 of the screen when my video starts.

The culprit is stageVideo, which I use because the FLVPlayback is consistently VERY choppy on my 1024x768 iPad .

The only thing that has worked so far for both resolutions using stageVideo is changing the resolution from 'high' to 'standard', but the loss in quality throughout the app is very harsh so this is no solution.

I simply want to be able to play videos in my app for both iPad resolutions, whether or not I use stageVideo...

Surely there is a solution? I can't imagine something as simple as playing videos in AIR for iPad apps is not possible...

Help is very much appreciated.

Thanks,

Matt