Having completed a wedding video, I go to encode the piece into AVI before performing the DVD authoring. The programme was shot in 16x9 (though I think it was actually 4x3 letterbox, shot on a Panasonic GY500) and captured in a 16x9 project. All the footage is marked at 1.1 pixel aspect ratio. On encoding, the piece appears with letterbox which is fine as that is the desired end result. However any of the clips with effects on them jump to a lower aspect ratio. I've tried using the interpret-footage commands, I've tried re-importing all the clips into a 4x3 project and I'm getting nowhere with it. I've seen the same problem previously with a 16x9 project which was shot and captured in true 16x9 (but can't remember the bloomin' fix).
Does anyone have a clue what's going on and how to fix it?