Re: Preventing fcp from switching back to rgb
Re: Preventing fcp from switching back to rgb
- Subject: Re: Preventing fcp from switching back to rgb
- From: Brad Wright <email@hidden>
- Date: Tue, 05 Aug 2008 10:06:00 -0700
From as far as I can tell even with all the render setting set to
YUV, it still switches to rgb on render. The timeline only contains
YUV video. My initial problem with RGB is that I found color shifts
when trying to use it inside another plugin that I wrote. It's also
really expensive, because of the need to work with 16 or 32 bit float
and convert back to YUV.
It's too bad there's no way to lock to 32 bit YUV.
On Aug 5, 2008, at 9:50 AM, Paul Schneider <email@hidden> wrote:
Hi Brad,
The short answer is no, you can't.
The long answer is that this is controlled by the user. See the
Video Tab in the Sequence Settings dialog. By default it is set to
"Render YUV material in 8-bit YUV", but the user can override this
to render everything in RGB.
Note that YUV-ness is also dependent on your footage format (and
output format). Almost all users are working with YUV footage, but
many plugin developers test with RGB media such as Tiff images or
RGB movies compressed with the Animation codec. We won't render in
YUV if your input and output are RGB. Your output format is
controlled by your sequence's codec. Check out the FCP manual for
more information.
I'd definitely recommend doing your initial testing with DV-NSTC
media and sequences created using the DV-NTSC preset, and then
moving on to handle other cases from there. If you're working in
YUV, you should definitely test with both 601 and 709 media.
Also keep in mind that while practically all consumer cameras
generate YUV footage, some high-end cameras are starting to be
natively RGB, and this trend is likely to continue and work its way
to the more affordable end of the market in the future.
Finally, I'd recommend reading the "Rendering FxPlugs in Final Cut"
document if you haven't already. Rendering in Final Cut is fairly
complicated, and seemingly innocuous changes can change the way we
call your plugin.
- Paul
On Aug 5, 2008, at 11:34 AM, Brad Wright wrote:
I don't know if it's possible, but I'd like to lock final cut pro
into only using YUV fximages. Currently, during previewing in the
timeline I get YUV, but when I try render out, final cut seems to
switch into rgb fximages. Is there any way to lock it YUV?
Brad Wright
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