removing user data/metadata from an mpeg-2 stream?

[graysky]

Anyone know how this can be accomplished? I don't like the fact that my mpeg-2 encoder places a "encoded by blah blah" as metadata in my mpeg-2 stream. Is there a util I can use to remove this? MPEG4 Modifier can do this for avi files, but not MPEG-2.

Thanks all!