http://bugs.winehq.org/show_bug.cgi?id=27437
--- Comment #6 from Aric Stewart aric@codeweavers.com 2012-03-27 09:41:21 CDT --- The gstreamer case will be harder to debug...
However if you do not have gstreamer/codec I can look at why you get a delay after the ACMWrapper_SetMediaType call.
a +tid,+quartz,+strmbase log would be helpful.
thanks -aric