Sunday, April 10, 2011

Re: [Avid-L2] RGB QT export

 

So Michael, if I read this right you are saying there is no way to any sort of QuickTime out of after effects for Avid import and stay 10 bit.

Correct?

Wow! Is this an Adobe or Avid problem (codec)?

Chris Magid
RTVF
Office- 214 350 7212
Cell---- 214 766 7212

On Apr 10, 2011, at 1:56 PM, Michael Brockington <brocking@sfu.ca> wrote:

> Hi Nigel:
>
> When I was looking into this a few months ago, Avid confirmed that
> all third-party 10-bit codecs were truncated to 8 bit on both import and
> export. With quicktime, the only way to preserve 10 bits in and out was
> through fast-import of Avid-codec quicktimes and Same-as-source
> exports. The other option was to use 16-bit TIFF file sequences, which
> was what worked best for my circumstances. I am currently working on
> 5.0.3.x, and that release stills seems to truncate in the same way.
>
> In terms of confirming whether your export is 10-bit or not, you
> could bring your clips into After Effects and check what it reports when
> you select the item in the footage window. It will identify 10-bit
> footage as having Trillions of Colours (vs Millions for 8-bit.)
> However, this won't show you if your footage has been truncated to 8
> bits within the 10-bit range. You would need to do some testing with
> test patterns to confirm that. The other problem with After Effects, is
> it doesn't seem to recognize Avid's 10-bit codecs (AvidPacked and
> RGBPacked) as having 10 bits, only 8. One reason why TIFF sequences
> work better for me for 10-bit file exchange.
>
> Cheers,
> --Michael
>
> On 11-04-10 7:37 AM, Nigel Gourley wrote:
> >
> > So we AMA to 4:4:4 prores QT and then want to export as RGB
> > uncompressed QT.
> > This all works except I wanted to confirm it was actually a 10 bit
> > file and
> > not 8 bit. How do we do this.. We have used mediainfo usually for
> > finding a
> > file spec but while it gives bits for some formats it doesn't for others
> > including prores..
> >
> > How can we confirm it's a 10 bit file if indeed it is?
> >
> > Thanks
> >
> > N
> >
> > [Non-text portions of this message have been removed]
> >
> >
>
> [Non-text portions of this message have been removed]
>
>

[Non-text portions of this message have been removed]

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