Movie limitation

I don't find the functions to get the length of the movie and get / set the current position. It's a minimum if you want to make a player.
I'm frustated to use only the 6 functions provided in Blitz.
Is my doc is uncompleted??

Does this help?
http://www.harrimansoftware.com/blitzmovie/

If you wanna make a player got blitzmovie. if you just wanna play a short movie as like an intro, mess around with what blitzplus gives you

also, there is no way to detect if a user has a codec installed on the pc. So if you wanted to do...

movie = openmovie("yadda")
if movie
end if

... it will crash