Open/Draw movie in Blitz3D

..I'm wondering whats the limitation of this commands..if I just wanna play whole movie from within Blitz3D, is there any limitation regarding memory or whatever??

playing movies is hard work for he machine in general. Especially some heavily compressing codecs like MP4 (divix etc.) need some time to decode the movie. So when you use a huge format (eg. a 1600*1200 pixel movie) then you shouldn't be surprised if your machine is 100% busy.

In Blitz you should Close a movie before you end the program.
It is using DirectShow, the movieplayer of DirectX. You should know it can only play a movie if the codec is installed on a certain machine.

So probably it's the best practice to check if a codec is supported, and if it isn't, offer a codec install to the user. You may find a freely distributable codec at www.free-codecs.com. It would then be somethin like:

m=openmovie("test.avi")
if m=0 then
 execfile "codec_install_whatever.exe"
 print "press a key to continue"
 waitkey()
else
 closemovie m
endif

or maybe something more smart.

..I understand that JFK..what i am wondering is is it possible to play from within Blitz3D whole movie, regarding movie size and memory management Blitz do..I wanna make some movie player, so I am wondering can Blitz handle whole movie (let say 700 megz file) to play without crashing down??

You should try it. As long as the file isn't bigger than 2 gigs it should work ok.