Android Question problems with streaming (.mjpeg videostream)

hi all!!

I'm trying to show in my app a videostreaming from an ip cam, i used the vitamiob4a and videomjpeg libraries. in the first case nothing seem to happen, I cannot download and show the stream, in the second case I can see the stream from my cam for 1 second after that immediatly the app crashes.
has someone the same problem?? and could someone give me some examples of code??

thank u!!