Portected video stream (RTMP)

[csean]

HI!

How to can I download rtmp stream from a protected video server?
I found host and full video file with Wireshark, than open it with VLC and begin download automatically Hidownload or VSO, but server at 0:59 stop playout.
(Server <perhaps reverse proxy?> allow only preview watching, because copyrighted)

Examples:

This video free:
rtmp://stream3.nava.hu:1935/playout/1608402
(I can download full video)
on the web: http://nava.hu/id/1608402/

This video blocked at 0:59, but VLC see full lenght:
rtmp://stream3.nava.hu:1935/playout/1608416
(VLC and downloader software too stop at 0:59)
on the web: http://nava.hu/id/1608416/

Please help me!