Vegas 6d Main Concept AVC/ACC MP4
 

So Vegas 6d lets you encode with main concept's AVC/ACC Mpeg4 codec. Is this the same as h264? However there doesn't seem to be an option for streaming?
I was able to render a 6 minute avi down to 30mb....the WMV file was 55mb so I'm very happy with the improvement in file size and the quality is as good if not better than the wmv file. But can it be streamed like the wmv file?
If I used Quicktime 7 Pro, does it have the option to set for streaming.

Yes, AVC is the same as H.264.