Exported Videos Washed Out, Pale, or Incorrect Gamma

Originator:jon
Number:rdar://12329675 Date Originated:19-Sep-2012 12:14 PM
Status:Open Resolved:
Product:Multiple Product Version:Multiple
Classification:Serious Bug Reproducible:Always
 
19-Sep-2012 12:14 PM Jon Stacey:
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Summary:
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H.264 encoded videos from applications such as Keynote and iMove yield washed out results.


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Steps to Reproduce:
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See the attached video "steps_to_reproduce.mov" for a live demonstration of how to reproduce the bug. There is audio and I describe what I'm doing.


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Expected Results:
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I expect the resulting rendered videos from these applications to have the same color performance as presented within the app themselves.


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Actual Results:
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Rendered videos look washed out and too light. See "iMove Render.mov" and "Keynote Render.mov" for the output that I demonstrate in the video.


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Regression:
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I have been irritated with this bug for over a year now. It was also a problem on OS X 10.7 releases. Additionally, from web searches it appears that this is a known outstanding problem since at least 2008.


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Notes:
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I have filed this bug as a QuickTime bug, but it may be a general OS X bug, or specifically related to each applications use of the APIs. Move as you find appropriate.

I'm using OS X Mountain Lion 10.8.1 (12B19), Keynote '09 Version 5.2 (1125), and iMovie '11 Version 9.0.8 (1778).

Here are discussions on various Web sites I found in my research. Some offer solutions, but I have not found any to work with the latest versions of OS X, primarily because QuickTime Pro is no longer available.

https://discussions.apple.com/thread/2545461?start=0&tstart=0
http://byteful.com/blog/2010/07/how-to-fix-the-h264-gamma-brightness-bug-in-quicktime/
http://boardreader.com/thread/Washed_out_QuickTime_Export_7r43X1ik39.html
http://forums.luxology.com/topic.aspx?f=34&t=38637
https://discussions.apple.com/thread/3021962?start=0&tstart=0

and many many more...

19-Sep-2012 12:14 PM Jon Stacey:
'steps_to_reproduce.mov' and 'iMac.spx' were successfully uploaded

19-Sep-2012 01:53 PM Jon Stacey:
'Keynote Render.mov' was successfully uploaded

Comments

Also see http://vitrolite.wordpress.com/2010/12/31/quicktime_gamma_bug/

By jon at Sept. 19, 2012, 10:07 p.m. (reply...)

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