Log Message: |
Trellis was treating big levels exactly the same way as lower ones.
In some cases, trellis was doing wild optimizations favoring a 0
because the distortion introduced by that big coeff change was
acceptable. But visually this could result in some nasty blocks with wrong
chroma information or similar brutal changes in other planes as well.
Skal added big levels handling where trellis just tries to minimize
the cost varying the run value only. No level modification is done
anymore.
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