Dougorama –
Your making things much too complicated.
Add Twixtor to the clip you want to adjust.
Double click the clip, open up the filters tab.
Scroll down to the “Output Control” section.
“Time Map Mode” = “Speed”
“Speed %” – enter the speed you want the clip to play, i.e. 50%
“Frame Interp” = “Motion Weighted Blend”
“Smart Blend” – check this box.
“Motion Blur” – up to you, I generally put in 1.
Now render and be prepared for a long wait, Twixtor is very slow — but worth it.
Also, I would recommend that once you like the results, you export a self contained Movie of the clip and use that, because any transitions or changes to the twixtor clip will require a re-render, which takes a lot of time.
Herb Sevush
Zebra Productions