did you check the info on your clip inthe project window? are you using the render queue? YOu should see both frame rate and field order in the project window and they should match in the render settings. if the clip is not separating fields by it’s self then you should figure out the field order and fix the interpretation. (file-interpret-main)
The output module should be set to the media 100 codec that matches the one you used to capture or a losless one like animation.
if you drag a clip to the new composition icon at the bottom of the project window you will get a perfectly setup composition.