Hello,
I want to buy the video player, but I do not know what formats your player supports video? ...

Is it also supports AVI, MP4, MOV, especially the important formats for watching movies? ..

Thanks to everyone who helps !

Looks like you do not have big experience with video for website.
On most video services you have flash players or javascript alternative.
Flash plays basic format supported is FLV, then h264/MPEG videos.
Surely it cannot play AVI. Also MOV (if it's not h264).
Above all those are not recommended video formats for web use. Not well compressed, not compressed for fast streaming.

I did not understand,
I know a site with your video player that supports AVI How's that?

link:
http://www.mytube.co.il/video/eLF3unAy

Eh, man - this is FLV video not AVI, it's easy to check.
file is: eLF3unAy.flv

One more time: flash doesn't play AVI.