Mafiu wrote:The game looks great with the VideoBackGround, but my FPS drop like 20fps.
Well, without any reference point, your statement is quite irrelevant...
Most importantly, performance will highly depend on the video encoding, image resolution, audio encoding, audio quality and decoder implementation.
e.g. Expect a 320x240 Flash video with 96kbps mp3 sound to be much different (in terms of performance) to a 1600x900 WMV (ASF) with 256kbps mp3.