Can't you just toggle the 1080P 29_97 project to 1080i 59.94? I've been very 23.976 centric for a while but I though that was possible. I would think if you toggle the project format to 1080I and refresh the sequence motion adapters it would do the same thing as opening it in a different project. Perhaps I'm missing something here.
If you material is truly 29.97P then converting it to I will not change the fact that both Psf/Progressive Fields come from the same moment in time. Converting to interlace will not change the fact that F1 and F2 are from the same moment in time.
I have had various hardware situations where a switch between progressive to interlace will cause a momentary glitch during playback. This was most obvious when outputting to tape and punching in with the wrong setup on a deck but I think I've seen file base shifts because of this.
The one thing I learns about a year or so ago is Nat Geo does not want 2:3 pulldown on the 29.97I delivery masters. They want 23.976 material to be transcoded to 2:2:2:4 cadence for delivery. They know it's more stutter but it makes the web encoding easier. The split frames of 2:3 material cause issues for them. Perhaps if it was a solid cadence of 2:3 they wouldn't have so many issues but I bet they were getting a lot of the Avid motion adapters where the 2:3 cadence restarted on every shot.
---In Avid-L2@yahoogroups.com, <wilsonchao@...> wrote :
Open a new 1080i project. When you're in that 1080i project, do a File / Open Bin to the bin in the old 1080p project, and drag the old sequence into the new project. When you play it, MC will apply a real-time effect to make it 1080i. When you export the sequence from the 1080i project it will be rendered out as 1080i.