Final Cut Express 4.0.1 - export settings for Apple TV are wrong aspect ratio

[GilesM]

In iMovie 08 I found the export to Apple TV settings a good compromise for playing on my PS3.
I have upgraded to Final Cut Express 4.
I exported to the pre-defined Apple TV setting and the resulting movie was output in the 4:3 standard instead of the 16:9 standard.

I can see no way to adjust the settings, what can I do about this ?

 

[NeoMayhem]

What format is the original footage in? If it is 16:9 DV, then you need to export as 853x480 instead of 720x480. A lot of video players do not see the anamorphic flag in the file, so they show it in the wrong aspect ratio if you leave it in the native resolution.

 

[GilesM]

The footage was AVCHD imported in to FCE. The scratch files were of AIC codec at a resolution of 1440 x 1080. The wrapper was .MOV.

When I made my edits finished the project, I selected to export as Apple TV format, but this when finished was the wrong aspect ratio.