I've been trying to export a quicktime file from Media 100 HDe (version 12.1.3 Intel - using it in an SD configuration) as deinterlaced but no matter what I try, it seems to always appear to be interlaced. I've tried clicking deinterlace source video, setting the field dominance to progressive - nothing seems to give me deinterlaced results. Is there something I'm missing? Any advice welcome.
Here's a trick I use in Final Cut - Don't know if it will apply to your application but the instructions are generic enough that they might.
Highlight the clip you want to deinterlace.
Duplicate it and place on a second video track
Set clip opacity to 50%
Apply the deinterlace filter to V1 with the LOWER setting selected
Apply the deinterlace filter to V2 with the UPPER setting selected.
Render and export as needed.
Gives me very good results.