I use Media_play function ,I want to set video to entity(sprite),when it runs,i can hear voice,and can see the video in sprite.But Maybe the video's size is very large,the sprite's size is small. I don't want to change the sprite's size,so video's size must change,how to change this size?
Thanks!!

code:

action sprite1
{
media_play("aa.avi",bmp_for_entity(my,0),100);
media_start(media_handle);
}

what you mean "video's size is very large" ? Resolution?
To make good looking and sharp view you have to change sprite resolution (f.e. the same size as resolution) then scale it by script to make this sprite smaller.