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NTSC to HDTV 1080i?
Hi all,
I have uncompressed 10-bit NTSC footage (720×486), that I want to insert in a uncompressed HDTV 1080i sequence in Final Cut Pro. I am having shift-field problems as the video is looking very interlaced when I insert the footage into the 1080i sequence, and I wanted to know if there is a way in After Effects to convert the footage to rid of the shift field problem.
I tried changing “interpret footage” to upper field first on the NTSC footage, and dropping it in a HDTV 1080i comp, then exporting with upper field first – no luck, the footage looked terrible. I also tried “interpret footage” to upper field first, and then exporting with no fields in the render, and still just as crappy.
Is there any way I can pull off what I am trying to do with After Effects?
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5 Replies
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you’ll get better results with plugins or other software that is designed to up-res sd to hd, but in ae you can scale up the footage to fit a 1080 comp and render that back out with fields to get 1080i.
first bring your sd footage into ae. with the footage selected choose file>interpret footage>main. make sure ae is set to correctly separate the field order, and check the option to preserve edges. then bring the footage into a 1080 (29.97 fps) comp and scale it up to fit the comp (you can use layer>transform>fit comp width or height depending on how you want the sd scaled to fit 16×9).
now you can add that comp to the render queue (composition>add to render queue). click the render settings and set it to render fields (upper first for 1080), then set your file path and render (i would render as lossless animation to avoid loss).
import into fcp and compare to your other footage… it won’t look as good, but it may be good enough.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
If you dont have the plugin you can try and remove the cadence which is easy or very painful (its never in the middle) i would simply blur the fields in the NTSC footage. My work around is an AJA FS1 to upconvert, it does a pretty good job..
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you cant hear my inner voice scream… can you..?
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You tried interpret upper field and… upper field…isn’t that resolution of NTSC lower field?
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Historically NTSC is Lower Field First, we are always the one oddball in the world, problem with being the first. There is NTSC Footage out there that is UFF..
you cant hear my inner voice scream… can you..?
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precisely, like 640×480 upper. that’s why the resolution determines it, not the format.
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