Half D1 files

[fazer_pile_it]

I am trying to reduce the bitrate on some tv captures I made. They are 352 x 480 at 5 mbps mpeg 2. I want to reduce to about 3 mbps. whenever I try to encode the file the output is only half the frame with the other half black. I watched the file in powerdvd and it looks the same there too.

My template

Mpeg 2 video,
352x480 size ,
4:3 aspect ratio,
29.97 fps frame rate,
constant bitrate,
3200 bitrate,
Main profile & main level,
NTSC ,
Interlace ,
4:2:0 YUV format
9 bits DV component precision
High Quality

Advanced tab

Interlace
top field first
4:3 Display
Full Screen

Bitrate viewer info

Stream type: MPEG-2 MP@ML VBR
Resolution: 352*480
Aspect ratio: 4:3 Generic
Framerate: 29.97
Nom. bitrate: 4998800 Bit/Sec
VBV buffer size: 112
Constrained param. flag: No
Chroma format: 4:2:0
DCT precision: 8
Pic. structure: Frame
Field topfirst: Yes
DCT type: Field
Quantscale: Nonlinear
Scan type: Alternate
Frame type: Interlaced
Notes:


I tried CCE also but the output is not 29.97 fps and i have run pulldown on that file.

thanks

Jerry