Mailing List AE-List@media-motion.tv ? Message #46393
From: Brendan Bolles <brendan@fnordware.com>
Subject: Re: [AE] REC 709 level shifts
Date: Sat, 3 Nov 2012 11:38:19 -0700
To: After Effects Mail List <AE-List@media-motion.tv>
On Nov 2, 2012, at 4:21 PM, Sixtus Beckmesser wrote:

> I sent some uncompressed AVIs to the BD authoring house, they converted them to AVCs and burned them on a BD. When I got the BD back for testing, all the stuff near black (16) has been shifted upward in level. What have I done wrong here?


Looks like whatever they're using to create the AVCs is assuming that the input is full range (0-255).  If Blu-Ray uses 16-235, that encoder is adding it.  If your material already has the 16-235 in it, you're getting a double-whammy and your blacks are getting lifted too high.

Probably the easiest thing is to re-send your material to them as 0-255.  It's possible they have an option for the encoder to expect 16-235 material, but I guess that's not their default.


Brendan

 
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