Can we do it ?
is there any setting inside media.show() ?

thank's

Take a look at the API reference:

http://developer.anscamobile.com/reference/index/mediashow

All the info you need is there :)

Type of Image source available are :
media.PhotoLibrary
media.Camera
media.SavedPhotosAlbum

I can't retrieve any from video library.

Do you have any code to show ?

I don't think it's possible to retreive/play video from the video library.

You have media.playVideo(), but that only plays a local file or remote URL