Rémi Bernon (@rbernon) commented about dlls/winegstreamer/unixlib.h:
uint32_t profile; uint32_t level; } video_h264;
struct
{
int32_t width, height;
uint32_t fps_n, fps_d;
I think you'll need an integer `version` too, mapping the various WMV GUIDs to GStreamer `wmvversion` caps field.