avisynth mplayer woe

Playing upconvert_from_screen_me2.avs.
AVS file format detected.
Invalid seek to negative position ffffffffffffffff!

I "think" meant that it wasn't sending any frames at all through. Using ffplay on it might help too. (DirectShowSource("push2.GRF")

What it really meant for me was that I had set my "x" parameter to be too high for my screen capture device so it wasn't capturing anything maybe [?] or was dying?

mplayer woe

mplayer  -nocache dvdnav:// -dvd-device e:/

G:\downloads\mplayer2-latest>c:\dev\ruby\sensible-cinema\vendor\cache\mencoder\mplayer.exe -font c:\windows\fonts\arial.ttf  -osdlevel 1  -osd-fractions 1 -vo direct3d -nocache dvdnav:// -dvd-device e:/
MPlayer Sherpya-SVN-r33574-4.2.5 (C) 2000-2011 MPlayer Team
Fontconfig error: Cannot load default config file

Playing dvdnav://.
libdvdnav: Using dvdnav version MPlayer-custom
libdvdread: Using libdvdcss version 1.2.10 for DVD access
libdvdread: Could not open e:/ with libdvdcss.
libdvdread: Can't open e:/ for reading
libdvdread: Device e:/ inaccessible, CSS authentication not available.
NAME OPEN FAILED
libdvdnav: Unable to find map file 'c:\dev\ruby\sensible-cinema\vendor\cache\mencoder\dvdnav\.map'
libdvdnav: DVD disk reports itself with Region mask 0x00fe0000. Regions: 1
Remember to disable MPlayer's cache when playing dvdnav:// streams (adding -nocache to your command line)
DVDNAV, switched to title: 1
audio stream: 0 format: ac3 (5.1) language: en aid: 128.
audio stream: 1 format: ac3 (mono) language: en aid: 129.
audio stream: 2 format: ac3 (5.1) language: fr aid: 130.
audio stream: 3 format: ac3 (stereo) language: en aid: 131.
subtitle ( sid ): 0 language: en

DVDNAV stream read error!
MPEG: Missing video stream!? Contact the author, it may be a bug :( 

Exiting... (End of file)

meant "DVDNAV is messed up for that disc, so play it first in VLC and then in mplayer and now it will work [what the...]"
See also http://betterlogic.com/roger/2011/04/windows-7-mplayer-jerky-playback/comment-page-1/#comment-6003