Hi!
Are you using an external display? If not, try disabling MergedFB with Option "MergedFB" "off" If yes, you'll have to set the XVideo attribute XV_SWITCHCRT according to which monitor you want to see the video overlay on, as the hardware can only show it on one of them.
Oh! at my office, i do use an external monitor and now i just fix the problem with swithching the monitor using XV_SWITCHCRT. Thanks. -- Regards, Zeeshan Ali Design Engineer, SW Open Source Software Operations Nokia Multimedia