Downscale video quality

Hello,
I have a synology NAS on which I installed Serviio DLNA server.
The goal is to access my movies stored on the NAS for all my clients xbmc (macmini, ATV, Ipad).
My IOS devices connected beings WIFI (no possibility to use a wired network) flow is too slow to play 1080p movies without lag. I therefore wish to use the functionalities of Serviio transcoding for downscale the quality of my movies on the fly.
Could you help me to create a profile ?
Thank you !
Joe
PS : Sorry for my bad english, i'm french
I have a synology NAS on which I installed Serviio DLNA server.
The goal is to access my movies stored on the NAS for all my clients xbmc (macmini, ATV, Ipad).
My IOS devices connected beings WIFI (no possibility to use a wired network) flow is too slow to play 1080p movies without lag. I therefore wish to use the functionalities of Serviio transcoding for downscale the quality of my movies on the fly.
Could you help me to create a profile ?
Thank you !
Joe
PS : Sorry for my bad english, i'm french
