Why are my videos being cropped?

My exported videos are being cropped and I can't figure out why. Please bear with me as I try to explain this.

In FCP X (10.0.7) I'll import my Canon 7D files with the Transcoding Preference>Create Optimized Media checked giving me ProRes 422 1920x1080 files. I'll edit my sequence and export using Share>Master File (default).

Opening in QuickTimeX and bringing up the Movie Inspector it states Format: ProRes 422 1920x1080 and Current Size: 1920x1080 (Actual). *Not cropped

Conversely, if I export the sequence using Send To Compressor then choosing ProRes 422 from Apple's presets the result in QuickTimeX Movie Inspector then states Format: ProRes 422 1920x1080 (1888x1062) and Current Size: 1888x1062 (Actual). *Cropped

Why is Compressor (4.0.6) cropping my video?

I've tried creating my own setting in Compressor and adjusting the Frame Size and Pixel Aspect in the Geometry tab to different settings and it always comes out cropped.

What am I doing wrong?

-- Jeff

MacPro 2x 2.4 GHz 6-Core Intel
12GB RAM
OS X 10.8.2

The frame size is being encoded correctly but Compressor is adding additional metadata that is causing QuickTime Player to crop the image. See here for more details:
[www.digitalrebellion.com]

My software:
Pro Maintenance Tools - Tools to keep Final Cut Studio, Final Cut Pro X, Avid Media Composer and Adobe Premiere Pro running smoothly and fix problems when they arise
Pro Media Tools - Edit QuickTime chapters and metadata, detect gamma shifts, edit markers, watch renders and more
More tools...

Jon, please don't take this the wrong way but... I love you!

Thank you so much for the link and the enlightenment. This has been bugging me for so long and I can't tell you how many times I went to bed crying because I couldn't figure it out.

Thank you, thank you, thank you.

-- Jeff

Same here. Thanks for the tip!