Danny –
Yeah, I agree with you – there’s no point in going from 29.97 to 59.94. The additional info is very interesting, I’ll check it out. I don’t see the link in your post, can you put it in?
Going back to the original post, though…. the main issue is that going from 30 to 60 or (29.97 to 59.94) has always looked like crap to us. There’s a reason why people shoot at 60 fps. No one shoots at 30 fps with the purpose of playing at 60 fps unless they’re intentionally trying to do something unconventional. It seems more functional to use 30 fps across the board, no?
So to answer his original question (“what happens to the 30 fps footage?”), my answer is that the 30 fps footage will be adversely affected.
As you mentioned, there’s doubling up of every other frame. So while the action is smooth with the native 59.94 footage, the 29.97 footage looks choppy when played at that framerate. To smooth out the action, there has to be either frame blending (causes ghosting), or pixel motion blending (causes warping). So the choices available are all undesirable. Twixtor appears to be the best solution for minimizing the warping, but even that has limitations.
I think he should render the entire project at 30 or 24 fps to preserve the smoothness and integrity of the entire piece.
Perfect Take Productions