Sdl.SDL_LockSurface( m_SdlSurface );
					
m_SdlOverlay = Sdl.SDL_CreateYUVOverlay(Width, Height, Sdl.SDL_YV12_OVERLAY, this.m_SdlSurface);
					
Sdl.SDL_UnlockYUVOverlay(m_SdlOverlay);