Aliasing on Red and Blue color in ALL Flash Player video playback (including YouTube)

We have noticed that Flash Player does not smoothly decode the colors red or blue in video files (such as YouTube/Vimeo/similar), resulting in nasty aliasing on text/edges of solid colour. The problem occurs on both Mac and Windows platforms, tested with Flash Player 11.3 to 11.5 and demonstrated using the video below:
https://vimeo.com/51914568
This video shows the issue clearly (you can switch between Vimeo's HTML5 Player to Flash Player. The red and green text is smoothly displayed in HTML5 Player or VLC/Quicktime Player). Note: watch in SD, not HD:
Only with Flash Player are edges aliased/jagged where they should be smooth. It's as if the resolution is dropped in half during the YUV decode.
I reported this today as  Bug 3351502
Here's hoping Adobe can get this sorted as it means the entire content of YouTube (for example) has poor quality video in Flash player.
You can also clearly see this on this cocacola advert:
http://www.youtube.com/watch?v=S2nBBMbjS8w&feature=relmfu
CB

In general, the most expedient way to get your issue in front of an engineer (and to track progress on it) is to file a bug at http://bugbase.adobe.com/
I actually filed a bug on your behalf a while back. It was reviewed by an engineer from the video team, and closed as a duplicate of this bug:
https://bugbase.adobe.com/index.cfm?event=bug&id=3324604
It sounds like the problem is specific to H.264 video encoded with 10-bit color.  You could re-encode your videos with 8-bit color as a temporary workaround to avoid the problem.  If you're seeing the same problem with 8-bit color, please let me know.
The bug is currently open and assigned to an engineer from the video team.

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    >

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