For older version of firmware working this solution:
Start streaming: http://10.5.5.9/gp/gpControl/execute?p1=gpStream&c1=start and download streaming data using port UDP 8554.
Unfortunately this solution working only with old software version. With last one 02.00.00 not working. Gopro sending some data on UDP port but data is not correct and does not contain streaming informations (only about 1kB/sec). Also streaming method from HERO3 not working.