I'm wanting to convert to VCD and view on a standalone DVD player.

To create the extra frames, I could:

1. just duplicate every frame.

or

2. take the top field from one frame, and the bottom field from the next, and make a frame out of it that goes in between.

or

3. do the same as 2, but then blend the fields.

Which will give me the smoothest looking result? And if I just dropped it into TMPGEnc, which method would it choose? I was planning to do the frame addition in AVISynth, but TMPGEnc is easier if it will give a comparable result.