http://bugs.winehq.org/show_bug.cgi?id=28280
--- Comment #5 from André H. nerv@dawncrow.de 2011-09-06 13:10:38 CDT --- Created an attachment (id=36258) --> (http://bugs.winehq.org/attachment.cgi?id=36258) tracing patch
could you please apply that patch and attach a trace with WINEDEBUG=+xvidmode again
see also: http://wiki.winehq.org/FAQ#head-ce0f398b298dc31add49d49671b302b020e234bb