avcodec error: more than 5 seconds of late video -> dropping frame (computer too slow ?) seems like another AVcodec issue, are you by any change playing HD H.264 MKV files? If so, then http://wiki.videolan.org/WindowsFAQ-0.9.x#H.264.2FMPEG-4_AVC_playback_is_too_slow The problem is with all files I ...