https://bugs.winehq.org/show_bug.cgi?id=40231
--- Comment #6 from Andrew Eikum aeikum@codeweavers.com --- (In reply to Baggypants from comment #4)
Created attachment 53773 [details] Output of launch with suggested environment variables
Looks like you're missing a set of lib32-gstreamer plugins:
002c:fixme:gstreamer:unknown_type Could not find a filter for caps: video/mpeg, systemstream=(boolean)true, mpegversion=(int)1 002d:warn:gstreamer:watch_bus gstdecodebin2.c(4555): gst_decode_bin_expose (): /GstDecodeBin:decodebin0: no suitable plugins found: Missing decoder: MPEG-1 System Stream (video/mpeg, systemstream=(boolean)true, mpegversion=(int)1)
I think the needed plugin is provided by the 'ugly' set. Does your distro provide that gstreamer package?