Thanks Kaspar,
That sounds fine – so after a quick search of “downconvert” in this forum i found this thread:
https://forums.creativecow.net/cgi-bin/new_read_post.cgi?forumid=124&postid=855914
Does anyone know if this function is likely to become available in the near future, or is there an alternative product which will do this in the meantime? Ideally we would like to use a hardware solution rather than software based…