This IS the Avid L2: Re: [Avid-L2] Re: Ama link to show file shows color bars correct but show whacky levels?

Thursday, December 26, 2013

Re: [Avid-L2] Re: Ama link to show file shows color bars correct but show whacky levels?

℞ filled!

On Thu, Dec 26, 2013 at 5:32 PM, johnrobmoore <bigfish@pacbell.net> wrote:

So Doc, you're saying take two mixdowns and call me in the morning. ;-)

--- In Avid-L2@yahoogroups.com, Mark Spano <cutandcover@...> wrote:
>
> I do not know enough about what is happening to explain what you're seeing,
> but I do know that making a QT ref export from a multiple codec sequence
> contains references to all of those pieces in the resulting QT. When you do
> a save as self-contained in QT Pro, you are not converting all codecs to
> one, rather it's just adding all of the pieces you're referencing together
> into a package you can take with you. So the resulting self-contained QT
> will have multiple codecs as well. This is true for audio as well - you can
> have 16/48 audio and 24/48 audio in your sequence on the same tracks and
> they will come out as separate tracks in a ref export. A subsequent
> self-contained QT saved from this export will maintain the separate audio
> tracks. So the solution, for me, is always mixdown before ref exporting.
> Whatever is happening (especially in your case here) is too much of a
> brain-bender, so I mixdown and save a headache.
>
>
> On Thu, Dec 26, 2013 at 4:54 PM, johnrobmoore <bigfish@...> wrote:
>
> >
> >
> > The curious thing is this is a self contained movie that was made from the
> > QT Ref. I would think, perhaps in error, that the resulting QT .mov would
> > all be the same codec. I guess my root questions is do applications see DNX
> > 220 and DNX 220X as different codecs and I'd extend the question to include
> > DNX 145 and 145X. Are these all the same DNX codec or are they different
> > enough to explain what I'm seeing on my end.
> >
> >
> > --- In Avid-L2@yahoogroups.com, Mark Spano <cutandcover@> wrote:
> > >
> > > I do not think most applications (including MC) like Quicktimes with
> > > multiple resolution video. Before you do a ref export, duplicate the
> > > sequence, and replace all video tracks with a mixdown. This will ensure
> > the
> > > resulting QT ref points to only one clip with one resolution.
> > >
> > >
> > > On Thu, Dec 26, 2013 at 3:54 PM, John Moore <bigfish@> wrote:
> > >
> > > >
> > > >
> > > > I'm on mac 0S 10.8.6 SNDX V 5.5.3.7. I've always done QT ref exports of
> > > > my shows to maintain the audio stems. Now we've gone HD. The AEs
> > captured
> > > > DNX220X which created issues with BCC 5.0.4 renders. I posted about
> > this
> > > > in an earlier thread and it seems there is some issue on my system or
> > maybe
> > > > a bug that won't render 16 bit effects processing on some if not all
> > of the
> > > > BCC 5.0.4 effects. I found that if the media is DNX220 then when set to
> > > > automatic processing the BCC effect render okay. I've now asked my AEs
> > to
> > > > capture everything DNX220. Now I have sequences with a mixture of
> > DNX220
> > > > and DNX 220X. I find I can export a QT ref and then save as a self
> > > > contained movie in QT Pro 7.6.6. I always check my files with an ama
> > link
> > > > back to make sure the levels are correct.
> > > >
> > > > I've noticed on our first HD episode the ama link had whacky blown out
> > > > like posterized levels in some sections of the show. Scrubbing up and
> > down
> > > > and back to the section and it was okay some of the time. Now on
> > episode 2
> > > > the whole show where ever there is source video and not graphics alone
> > is
> > > > showing the same whacky levels. Color bars are fine as is a texted
> > credit
> > > > back plate.
> > > >
> > > > I've pulled some sections and examined the reference and render clips.
> > > > For color bars the media is DNX 220. For sections of the show the
> > media is
> > > > DNX 220X and for the Safe Color Limit Rendered Track the media is DNX
> > > > 220X. My exported and self contained files look fine in QT pro and if
> > I do
> > > > a traditional import back into Avid they are fine. It's just the ama
> > link
> > > > that is whacky.
> > > >
> > > > Could these issues be the mismatch of bars at DNX 220 and most of the
> > > > source material and safe color render being at DNX 220X? Also on the
> > ama
> > > > linked clip back to the episode the color space says 601 while when I
> > check
> > > > the safe color render media in avid it's 709. Not sure what's up any
> > > > suggestions? The network has not complained about the files so they
> > must
> > > > work for them too.
> > > >
> > > > John Moore
> > > > Barking Trout Productions
> > > > Studio City, CA
> > > > bigfish@
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>