rtmpdump was unable to parse the playpath correctly so you should specify it manually.
Code:
rtmpdump -r "rtmp://bcasts1w.livebox.cz:80/iprima_token_1?auth=_any_%7C1360603345%7Cc1d9c3b367221423d42b6aeafd314b9065bc45cd" -y "mp4:hq/Prima-1302061854-25524_1500.mp4" -o Test.flv
Code:
RTMPDump v2.4 GIT-2012-12-09 (Compiled by KSV)
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
Connecting ...
INFO: Connected...
Starting download at: 0.000 kB
INFO: Metadata:
INFO: trackinfo:
INFO: timescale 25000.00
INFO: length 376000.00
INFO: language eng
INFO: sampledescription:
INFO: sampletype avc1
INFO: timescale 44100.00
INFO: length 665600.00
INFO: language eng
INFO: sampledescription:
INFO: sampletype mp4a
INFO: audiochannels 2.00
INFO: audiosamplerate 44100.00
INFO: videoframerate 25.00
INFO: aacaot 2.00
INFO: avclevel 31.00
INFO: avcprofile 77.00
INFO: audiocodecid mp4a
INFO: videocodecid avc1
INFO: width 768.00
INFO: height 432.00
INFO: frameWidth 768.00
INFO: frameHeight 432.00
INFO: displayWidth 768.00
INFO: displayHeight 432.00
INFO: framerate 25.00
INFO: moovposition 32.00
INFO: duration 15.09
345.033 kB / 13.20 sec (87.4%)