https://bugs.winehq.org/show_bug.cgi?id=56491
--- Comment #1 from blubban@gmail.com --- After thinking about it some more, I guess the best solution is make CLSID_decodebin_parser offer the codec_format on its pins. In the unlikely case that the peer accepts that format, decodebin_parser will recreate its wg_parser with the read_compressed flag, like the WMSyncReader.
(And, like WMSyncReader, hope that nobody wants compressed audio and uncompressed video.)
I'll get to work on that.