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Why is my 1080/30p - interlaced?

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Markford Astina
Why is my 1080/30p - interlaced?
on Jun 19, 2009 at 9:01:10 pm

Hi!

I shot on the HF10 and HVX on 1080i/30p and was wondering what the workflow is in FCP to convert it to 30p.

At the moment all of my Export to Quicktime are interlaced.

Been searching for hours on the web and can't seem to get a definite answer.

Cheers.


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Dave Navarro
Re: Why is my 1080/30p - interlaced?
on Jun 20, 2009 at 3:41:30 am

I am trying to understand why shooting in 60i and 30p are both interpreted by After Effects as 29.97p


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Mark Espina
Re: Why is my 1080/30p - interlaced?
on Jun 21, 2009 at 12:15:11 am

Hi,

In Final Cut, simply go to your sequence settings, and under field dominance set it to none.

You should get progressive exports from that.

Hope this helps.

Cheers.


Mark Philipp Espina
http://www.markespina.com


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Dave Navarro
Re: Why is my 1080/30p - interlaced?
on Jul 31, 2009 at 3:22:52 am

Okay, I learned that the Canon AVCHD cameras encapsulate EVERYTHING they shoot in a 60i (or 50i for PAL) wrapper.

So most software will see everything as 60i. While the wrapper is encoded as 60i, if you record at 30p or 24p it actually does record progressive frames for the data. So After Effects is properly interpreting my 30p footage as 30p and when I re-encode, it works properly.

And the apparent reason for the 29.97 and not "true 30p" is that the "broadcast spec" for 30p is 29.97. So again, After Effects is interpreting things correctly.

The only thing I have not been able to figure out is how to do the correct pulldown in After Effects for stuff recorded in 24p mode. I have to use FFMPEG or Neoscene to handle that.


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