At present, video sharing websites such as Youku, Tudou and Youtube have upgraded flv. Some flvs use H.264 encoding with higher compression rate, but your mobile phone's Adobe flash lite does not support H.264 ... so your mobile phone plays a black screen of FLV.

If you can sign, you can download and install CorePlayer, which has strong soft decoding. You can play almost all commonly used videos (except live video).

If you can't sign, you can install a UCPlayer.