Acextreme said:FlexPlayer has a serious lack in its file management capability, which is totally unacceptable for, I believe, most of us. However, at the price of zero, you can't really demand too much. I have tried most of the players on my iPhone 4, most of them stutters or can't play .mkv with h264 encodes at resolution of 1280x720 fluidly. Of those players that stutters, AVPlayer did the playback much more efficiently (i.e. video was relatively smoother and the lag between audio and video being the least though still unacceptable). GoodPlayer and AcePlayer failed to even play the video, only sound.
Maybe a setting on your phone, I use AVPlayerHD on my iPad 2 with zero stutter or lag and no sync issues what so ever, when playing 1280x720 .mkv files.
Sent from my iPad using iPF