Bad video quality with mplayer -vo vdpau -vc ffmpeg12vdpau on GTX 560

When playing MPEG videos using mplayer and vdpau, the video quality is really bad.
I think there is a problem with ffmpeg12vdpau.

mplayer -vo vdpau -vc ffmpeg12vdpau
plays the file but the video quality is terrible

mplayer -vo vdpau -vc ffmpeg12
plays the file correctly

All other video formats play correctly.

I have uploaded the log and sample file to the ftp server as explained in the sticky.
ffmpeg12vdpau_nvidia-bug-report.log.gz
ffmpeg12vdpau_sample.ts

Additional info:
The problem occurs since an update on February 17th

[2013-02-17 10:12] upgraded x264 (20121113-1 -> 20130206-1)
[2013-02-17 10:12] upgraded ffmpeg (1:1.0.1-1 -> 1:1.1.2-2)
[2013-02-17 10:12] upgraded amarok (2.7.0-2 -> 2.7.0-3)
[2013-02-17 10:12] upgraded blender (6:2.65a-5 -> 6:2.65a-6)
[2013-02-17 10:12] upgraded chromaprint (0.7-2 -> 0.7-3)
[2013-02-17 10:12] upgraded cinelerra-cv (1:2.2-12 -> 1:2.2-13)
[2013-02-17 10:12] upgraded ffmpeg-compat (20120509-2 -> 20120509-3)
[2013-02-17 10:12] upgraded ffmpegthumbnailer (2.0.8-1 -> 2.0.8-2)
[2013-02-17 10:12] upgraded gnupg (2.0.19-5 -> 2.0.19-6)
[2013-02-17 10:12] upgraded gstreamer0.10-ugly (0.10.19-4 -> 0.10.19-5)
[2013-02-17 10:12] upgraded gstreamer0.10-ugly-plugins (0.10.19-4 -> 0.10.19-5)
[2013-02-17 10:12] upgraded hwids (20130209-1 -> 20130214-1)
[2013-02-17 10:12] upgraded iotop (0.4.4-3 -> 0.5-1)
[2013-02-17 10:12] upgraded kdemultimedia-ffmpegthumbs (4.10.0-1 -> 4.10.0-2)
[2013-02-17 10:12] upgraded kid3 (2.2.1-1 -> 2.2.1-2)
[2013-02-17 10:12] upgraded mediastreamer (2.8.2-2 -> 2.8.2-3)
[2013-02-17 10:12] upgraded sox (14.4.0-3 -> 14.4.1-1)
[2013-02-17 10:12] upgraded mlt (0.8.8-1 -> 0.8.8-2)
[2013-02-17 10:12] upgraded mlt-python-bindings (0.8.8-1 -> 0.8.8-2)
[2013-02-17 10:12] upgraded mpd (0.17.3-1 -> 0.17.3-2)
[2013-02-17 10:12] upgraded mplayer (35421-2 -> 35915-1)
[2013-02-17 10:12] upgraded xine-lib (1.2.2-5 -> 1.2.2-6)
[2013-02-17 10:12] upgraded opencv (2.4.3-4 -> 2.4.3-5)
[2013-02-17 10:12] upgraded opencv-docs (2.4.3-4 -> 2.4.3-5)
[2013-02-17 10:12] upgraded opencv-samples (2.4.3-4 -> 2.4.3-5)