Linked by lemur2 on Wed 9th Mar 2011 00:18 UTC
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Member since:
2007-02-17
...
Psychovisual optimizations is where it's at.
http://blog.webmproject.org/2011/03/vp8-codec-sdk-bali-released.htm...
Achieved more consistent high video quality across entire video clips. We now use a better two-pass rate control option that no longer favors early sections of videos.
Greatly improved quality on "noisy" source videos through temporal filtering of alternate reference frames.
Improved visual quality of scene transitions by allocating fewer bits to the transition itself and more to the frame immediately after the transition occurs.
Some of these, especially the last, would not improve the objective quality measures such as PSNR or SSIM much at all. They are "Psychovisual optimizations".
Edited 2011-03-09 01:42 UTC