After testing, I can confirm that applying the following patches help a lot and that they do not break anything :
asfpatch.txt from http://bugzilla.gnome.org/show_bug.cgi?id=332157 debian/patches/90_from_cvs_fix_asfdemux_typo.patch from Ubuntu source dist (patch maybe unrelated to the bug though) Results : Perfect a/v sync with mgs3_tgs2k3_e.wmv Great improvements with http://web.mit.edu/patil/www/media/video/yatta.asf but a/v still out of sync (at least the video doesn't finish playing 3 minutes before the audio) Small improvements with http://www.panduck.com/media/yatta.WMV (Some stuttering remains) -- WMV8 video is out sync (stuttering/super fast) https://launchpad.net/bugs/44516 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs