VP9 "green nose" artifact

[GoogleCodeExporter]

What is the expected behavior? What do you see instead?
VP8 works correctly. VP9 shows "green nose" artifact. (see screenshots below)
+a similar problem is seen on the "cake". Some orange "shadow" is seen in VP9.
+left part of the picture looks offset from the right part.

What version are you using? On what operating system?
Linux Debian 7.0 x64

Can you reproduce using the vpxdec or vpxenc tools? What command line are
you using?

Version: v1.2.0-1610-g1e8b3da

Encoder settings:

./vpxenc --codec=$CODEC --passes=2 --good --cpu-used=0
--target-bitrate=600 --auto-alt-ref=1 --bias-pct=50 --minsection-pct=0
--maxsection-pct=2000 --lag-in-frames=25 --kf-min-dist=0
--kf-max-dist=9999 --static-thresh=0 --min-q=0 --max-q=63
--arnr-maxframes=7 --arnr-strength=5 --arnr-type=3  -v -o $OUTPUT
$INPUT

Please provide any additional information below.
VP8: (Skyrim demo) 600 kbps screenshot
https://docs.google.com/file/d/0BycgkMZbeQOzM3Y2c3RlQ2FiYkk/edit?usp=sharing
800 kbps:
https://docs.google.com/file/d/0BycgkMZbeQOzN3c5MTgtUnJfWFk/edit?usp=sharing

VP9: 600 kbps:
https://docs.google.com/file/d/0BycgkMZbeQOzQnl6TTczald3Znc/edit?usp=sharing

INPUT source: (in VP8)
https://docs.google.com/file/d/0BycgkMZbeQOzV20xUVpFSnFYR0U/edit?usp=sharing
...decoded into RAW file:
ffmpeg -i [INPUT FILE] -f yuv4mpegpipe - > [OUTPUT FILE]

-Alexey Eromenko "Technologov", 20.Mar.2013.

Original issue reported on code.google.com by al4...@gmail.com on 20 Mar 2013 at 9:57

[GoogleCodeExporter]

VP8: (encoded file, 600 kbps)
https://docs.google.com/file/d/0BycgkMZbeQOzWnNIdlJETHo1UGc/edit?usp=sharing
VP8 decoding:
VP8 was read directly with VLC "as-is".

VP9: (encoded file, 600 kbps)
https://docs.google.com/file/d/0BycgkMZbeQOzTjJBNHBmNGlaZE0/edit?usp=sharing
VP9 decoding:
./vpxdec skyrim-vp9-600kbps.webm --progress -v -o skyrim-vp9-600kbps.y4m

Original comment by al4...@gmail.com on 20 Mar 2013 at 9:58

[GoogleCodeExporter]

Ronald did you look at this already? 

Original comment by albe...@google.com on 28 Mar 2013 at 10:21

• Changed state: Assigned

[GoogleCodeExporter]

Paul looked into this a while ago.

Original comment by rbul...@google.com on 28 Mar 2013 at 10:26