Re: FCP6 TemporalImageAPI - returning an image different from main input
Re: FCP6 TemporalImageAPI - returning an image different from main input
- Subject: Re: FCP6 TemporalImageAPI - returning an image different from main input
- From: Paul Miller <email@hidden>
- Date: Wed, 02 May 2007 12:31:48 -0500
Peter Litwinowicz wrote:
Right now, FCP's implementation of the temporalAPI will always give
you the native format of the media. In other words, if you use the
temporalAPI on a progressive clip, you'll get a full frame back,
even if you are in an interlaced timeline. This is arguably
confusing, since it's not the same as the input image that we pass
to filters (input images are in the timeline format, not the media
format). I think Paul Miller has a good point here.
Not confusing at all. If the source is progressive, you get progressive
frames. If the source is interlaced you get fields. What’s confusing
about that? What’s more confusing to me is that the input is somehow
tied to the output settings. I find it more confusing that I have to
worry to use my output settings to somehow retrieve my input. And I
worry also that when you tie input to output settings then you also get
into the problems that FCP and Motion has that you can’t retrieve all
120 frames of a 120fps sequence when you are sitting within a 30p or 60
sequence. Of course, let’s address one issue at a time.
What is confusing is if I am working in a sequence that is 720x480 DV
(interlaced), and my track has a 720x540 PROGRESSIVE movie clip on it
(which FCP happily SCALES to fit the 720x480 sequence size), my plugin
gets as INPUT a 720x240 FIELD.
But if I request a frame via the temporal API (using the RenderInfo that
was passed in to me - you know, the one that tells me what field I am on
and such), I get back a 720x540 FRAME.
This might make sense to you, but it looks like a bug to me.
--
Paul Miller | email@hidden | www.fxtech.com | Got Tivo?
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