https://bugs.winehq.org/show_bug.cgi?id=40179
--- Comment #3 from Andrew Eikum aeikum@codeweavers.com --- One source of this bug is that PowerPoint asks for ARGB32 while winegstreamer's YUV transformation filter converts only to RGB24. Quickly hacking this to use the right format allows IGraphBuilder::Connect to succeed, but then it fails later. I haven't figured that out yet.