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29.97 vs 59.94 in HD
Hi Cow People,
I have been searching the archives and some things have been a little clearer now. But I was hoping someone can clarify a bit more.
I need to created HD 1080i (lets say I am outputting to Sony HD cam).
Should I just set the composition that I am going to build in After Effects for 29.97 if I am going to output upper field first?
If one wants to do a progressive render, would you then switch the comp settings to 59.94?
Or does none of this matter? Does After Effects just take care of that when you select field render or progressive in the render cue?
Should I just stick with 29.97?
Thanks in advance guys.
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1 Reply
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if you are working with 1080i and want to render back to 1080i, then i would work with a 1080/29.97 comp and choose to render with fields as you described. the only thing you nee to make sure of is that ae is correctly separating fields for the footage (which it almost always does for 1080 footage).
however, working with 1080i in a 59.94 comp and render with fields will work the same, but you will also need to conform the footage to 29.97 in the render settings.
if you wanted to transcode your 1080i to 720p60, then separating with preserve edges (in the interpret footage settings) for the footage, use a 720/59.94 comp setting, scale the footage to fit comp and render as 59.94 progressive…
but if you wanted to do 1080p, then you would need to use a 1080/29.97 comp, and i would choose to preserve edges for the footage. i might also try frame blending (frame mix) of the footage in the comp to blend the data from the second fields that you are losing. then render progressive.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW
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