Hi,
so you got a exception (C0000005 - ACCESS VIOLATION) (on read or write) in rtmpdump.Problem could be maybe the rtmpdump version you use.Maybe a OS issue or you need to change UAC rights on your Win7.
So I see you use output file (-o historia.flv) and this will also created in your folder but if you have no write rights for this folders then rtmpdump should fail (access violation).Just check this again or move your rtmp folder in your HDD (C:\rtmpdump\) and try again.Also you can copy of CMD.exe into same folder and start it from there to have the right path already.
PS: To get link working you need your token value xy so you can't use same as was postet by peterpan.You can also try this for testing without token..
Code:
rtmpdump -v -r "rtmp://94.23.247.151:1935/live//xtrm2" -p "http://privado.streamingfreetv.net" | "player" -
...just enter your playerpath at the end (your VLC ).This link just works 10 seconds only each time.
greetz