Re: [Avid-L2] Strange QT DNX import to Baselight when keyable graphics are used?

You are incorrect about DNX (other than 4444) not supporting Alpha
channels. I use them all the time.

You may be thinking of Apple Pro Res, which has that limitation.

Being that you are exporting Millions and not Millions plus, i don't think
it's related to your problem. Just trying to keep the misinformation to a
minimum.



On Monday, February 18, 2013, John Moore wrote:

> **
>
>
> On a current project we output to HDCam tape with no color correction and
> send the tape to a facility with Baselight. When there are fixes we export
> small same as source QT .movs of the change sections and the reinsert them
> at the Baselight facility. I've just been informed that when we export a
> section that has keyed in graphics, like a score board the Baselight whacks
> out when these are imported. The blacks turn purple and the colors are
> off. Their solution is to convert the Avid DNX 220 and perhaps an
> occasional 220X to ProRes and then they import properly into Baselight.
> There was some thought about the alpha channel from the source graphics but
> this makes no sense as Avid doesn't support any Alpha export and DNX has no
> Alpha channel support other than DNX 444 as far as I know. There has been
> in the past a mis importation of RGB graphics as 709 which leads to video
> well under 0 and over 100%. Since I've been on the project I correct
> this issue but I'm told they still have problems importing anything with a
> keyable graphic. A clip that is just a field source from a file is no
> problem. A graphic Animation is no problem but when the same animation has
> a keyable text graphic over it then there are problems. All these elements
> except the field source files are coming from graphics using AE. This all
> makes no sense to me. I checked my QT exports and they all show as Avid
> DNX with millions not millions + so there is no alpha channel that I can
> detect. I'm also told the facility has or is thinking of checking with
> Baselight to see if the problem is on their end. Any of our Baselight
> Guru's got any insight about importing issues with Avid DNX220 and or
> 220X. I'm am at a loss as I've not got any baselight chops to draw from.
>
> John Moore
>
> Barking Trout Productions
>
> Studio City, CA
>
> bigfish@pacbell.net <javascript:_e({}, 'cvml', 'bigfish%40pacbell.net');>
>
> [Non-text portions of this message have been removed]
>
>
>


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



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