Hello, I'm the developer of yaPlayer. Let me introduce the app. 
AppStore Link
yaPlayer is a video player app for iPhone/iPad with gorgeous control interface (it's like jog dial). It can play most of all video formats like MP4, M4V, MOV, AVI, MKV, WMV, FLV, WEBM, VOB, TS, TP... and supports subtitle, chapters.
Into Movie: http://www.youtube.com/watch?v=rooaBQzLOeE&feature=g-upl

AppStore Link
yaPlayer is a video player app for iPhone/iPad with gorgeous control interface (it's like jog dial). It can play most of all video formats like MP4, M4V, MOV, AVI, MKV, WMV, FLV, WEBM, VOB, TS, TP... and supports subtitle, chapters.
Into Movie: http://www.youtube.com/watch?v=rooaBQzLOeE&feature=g-upl