Pure java video endcoding/decoding libraries

Does anyone know of any video encoding/decoding libraries written entirely in java? Bonus points if it works on Android开发者_StackOverflow.

I'm trying to write a video decoding application for android, where I have access to the frame level decoding functions (which is absent in the android API MediaPlayer class)

jcodec is a pure java implementation of audio and video codecs and containers. Currently, it "only" decode H264 (MPEG-4) and MJPEG. More informations here.

Maybe you want to look at this : http://www.alphaworks.ibm.com/tech/tk4mpeg4 (looks fairly old though)

But (depending on your platform), I believe you will have a hard time for a real time decoder purely in Java...