Mailing List AE-List@media-motion.tv ? Message #41354
From: adam mercado <adam@influxx.com>
Subject: Re: [AE] [OT] H264 Gamma Shift
Date: Tue, 20 Dec 2011 22:29:47 -0800
To: After Effects Mail List <AE-List@media-motion.tv>
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Thanks Scott, I'm still using Episode 5.6 so there you go. Thanks for the tip on the compression list. Did not know of that one.

I did come across this PDF in my hunt, and Telestream admit to their H264 encoder crushing blacks, and provide this work around. 
I tried various flavours of their recipe with little success so far. Ho hum, I'll look into upgrading to v6, but AME uses the Main Concept codec too. Trying that now, but its deathly slow compared to every other encoder out there. Holy cow. did it get any better in CS5?




On Dec 20, 2011, at 3:52 PM, Tupper, Scott (HQP) wrote:

I think the issue went away when Episode switched over to Main Concept’s H.264 codec in ver 6. You may want to bounce this over to the Compression-List@media-motion.tv to verify.
 
 
scott tupper | multimedia producer, media services
robert half international
office: 925.913.2180 
blackberry: hqpmediaservices@rhi.com | fax: 925.394.5205
address: 2613 camino ramon | san ramon, ca | 94583
 
From: After Effects Mail List [mailto:AE-List@media-motion.tv] On Behalf Of Chris Meyer
Sent: Tuesday, December 20, 2011 12:18 PM
To: After Effects Mail List
Subject: Re: [AE] [OT] H264 Gamma Shift
 
That doens't always work, unfortunately.
 
The secret is to use x264, not h.264 (available from http://www003.upp.so-net.ne.jp/mycometg3/ - scroll down a few entries).
 
 
 - Chris
 
 
On Dec 20, 2011, at 12:33 PM, David Torno wrote:


I have found that H.264 outputs from QuickTime are too bright and the fix I use is to open the H.264 back in QuickTime, Bring up the Properties window (cmd+j), select the Video Track, select the Visual Settings tab, then change the Transparency dropdown to Composition. Save file.

David Torno
Visual Effects Artist & Supervisor
O: 213.739.2290
C: 818.391.6060
---------------------
 
"The most useless day is that in which we do not laugh"
-Charles Field


On Dec 20, 2011, at 11:28 AM, adam mercado <adam@influxx.com> wrote:

I'm having a hell of a time trying to get a render off to my client that resembles to color shown in AE. Workflow is this:
 
PSDs imported and animated to 16bit comps (the artwork is a concrete texture with a black vignette over, lots of greys, blacks blending into each other)
Rendered to 16bit PhotoJPEG .MOVs (the masters look fine, no gamma shift at this stage but at 750MB too large to upload to client)
Encoded in Episode to H264 (blacks are crushed, all detail is lost, gamma is generally shifted darker)
Encoded in QuickTime to H264 (gamma is shifted lighter and reds are shifted towards blue)
 
I've tried playing with various options and settings in Episode, but any gamma compensated reverse shift I apply brightens the highlights but the blacks are still crushed. Playing with the QT export filters are really hit or miss with little effect.
 
Anyone come across this before and found a workaround? Or a better encoder. I had an old version of compressor at one time but removed it as it was so unstable and buggy and required a reinstall every two weeks.
 
At this stage I've resorted to trying to introduce the reverse gamma shift as an adjustment layer in AE prior to final render to compensate for the shift in Episode. So far I  have yet to find the sweet spot that solves the problem
 

many many thanks

 
 

 
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