http://bugs.winehq.org/show_bug.cgi?id=31029
--- Comment #5 from Dmitry Timoshkov dmitry@baikal.ru 2012-06-27 01:30:09 CDT --- (In reply to comment #3)
Created attachment 40735 [details] possible fix
Does this patch help?
The problem with this approach is when there are several decoders from the same vendor (one of which understands the stream format and another one which doesn't). Probably either a decoder needs to rewind the stream after initialization is done, or CreateDecoderFromStream needs to do that before calling a decoder.