Bug : rtmpdump works without picture

[karlo2105]

I found out this stream.

When I try to play it on VLC, it starts but picture never appears.

rtmpdump -r "rtmp://95.138.168.10/live/" -a "live/" -f "WIN 11,6,602,180" -W "http://www.serbiaplus.com/wp-content/uploads/jw-player-plugin-for-wordpress/player/player.swf" -p "http://www.serbiaplus.com/sky-sports-news/" --live -y "skyspnews" | vlc -
RTMPDump v2.4 GIT-2012-12-09 (Compiled by KSV)
(c) 2010 Andrej Stepanchuk, Howard Chu, The Flvstreamer Team; license: GPL
WARNING: You haven't specified an output file (-o filename), using stdout
Connecting ...
INFO: Connected...
ERROR: rtmp server sent error
Starting Live Stream
INFO: Metadata:
INFO:   duration              0.00
INFO:   width                 640.00
INFO:   height                360.00
INFO:   videodatarate         800.78
INFO:   framerate             25.00
INFO:   videocodecid          7.00
INFO:   audiodatarate         117.19
INFO:   audiosamplerate       44100.00
INFO:   audiosamplesize       16.00
INFO:   stereo                TRUE
INFO:   audiocodecid          2.00
INFO:   encoder               Lavf54.63.100
INFO:   filesize              0.00
9007.743 kB / 62.28 sec
ERROR: Download: Failed writing, exiting!

Is there any solution ?