This IS the Avid L2: Re: [Avid-L2] Re: QT video levels?

I, too, have been poking about in this murky pond (Media Composer Mac 6.5.2.1) - a student wishes to send an Avid sequence to Apple Color (this can be done with a QuickTime and an associated EDL). But - Color does not seem to recognise DNxHD and treats any ProRes as RGB even if exported from Media Composer as 709. Briefly, I found that some apps recognise the 709 flag and some don't:

Same as Source exports (709 or RGB) - if codec is ProRes - both interpreted as RGB in QTX, Color and After Effects.

If exported as DNxHD, looks like Color and QTX interpret both as RGB levels but QT7 and After Effects do recognise the different levels so the 709 exports are correct.

With Best Wishes,
Roger Shufflebottom
+44 7973 543 660

>________________________________
> From: Michael Brockington <brocking@sfu.ca>
>To: Avid-L2@yahoogroups.com
>Sent: Tuesday, 7 May 2013, 17:22
>Subject: Re: [Avid-L2] Re: QT video levels?
>
>
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>On 6.0.3 this flag seems to be set properly by Avid for DNxHD exports.
>ProRes exports in that version seem to be always flagged as RGB.
>
>I reported some testing results here comparing DNxHD vs ProRes
>same-as-source exports on Mac:
>http://community.avid.com/forums/p/113013/677905.aspx
>
>I suspect not all applications observe the flag that is set.
>
>Cheers,
>--Michael
>
>On 13-05-07 3:57 AM, Fabrice Altman wrote:
>>
>> So... moving on from the goose ;)
>>
>> Apparently there is an internal flag in the exported DNxHD QT file
>> that is supposed to be set to either RGB or 709 according to the
>> export settings.
>>
>> However, this flag seems always set to 709 on export from MC 5.5,
>> whatever the export settings are. Can anyone confirm this is a bug and
>> has been fixed in later releases?
>> (The flag seems to work on export from AFX).
>> Does a similar flag exist in ProRes?
>>
>> Cheers,
>> F.
>>
>>
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