The HDS video (manifest.f4m) needs a token which is generated when the stream starts, but i get also the access denied message and the stream doesn't start.
But you can download one of the other formats. The easiest ones are the MP4 videos (the ones without the hbbtv useragent restriction) which you can get with every download manager (or even with your browser):
Code:
http://rodl.zdf.de/dach/tivi/15/04/150417_longholiday_papa_lgf_1456k_p13v11.mp4