asfdemux/asfpacket: set frame start code to VC-1 advanced profile stream
asfdemux/asfpacket: set frame start code to VC-1 advanced profile stream

VC-1 advanced profile constrains the bitstream format to pair
the frame data with the frame start code.

matsu/gst-plugins-ugly,matsu/gst-plugins-ugly,matsu/gst-plugins-ugly,matsu/gst-plugins-ugly