4:2:2 h.264?

Hello,

I've been given these specs as deliverables for online content and I'm having difficulty creating a preset to match their criteria.

My process is as follows:

Footage shot at 23.976 was edited in Avid Media Composer 8 on Macbook pro. The completed sequence is mixed down and a new sequence is made. The new sequence is opened in a 1080i/59.94 project and loaded. When prompted for the conversion you will be prompted for a conversion: Clicked yes. This will do a frame rate conversion from 23.976p to 59.94i with a continuous 2:3 pulldown. From here, a QT reference is exported.

I've tried the "HD 1080i 29.97, H.264, AAC 48 kHz" setting, but limited to 6000kbps:

I am not able to produce a 4:2:2 file, only 4:2:0, and when I check the file using the MediaInfo program I have, my scan type is listed as progressive.

I appreciate any guidance and suggestions.

Thanks.