RTSP h264 recording from vlc (aggregate operation not allowed)

[spotthemaniac]

Hi,

I have scoured the archives but not found an answer to this one so ...

I am trying to use vlc to stream H264 video to a recording function.
I have a file I am streaming which has only a video track. (h264)

The RTSP exchange goes:
OPTIONS
OK
DESCRIBE
OK
SETUP rtsp://a:control:ip:port/name
Aggregate not allowed

The DESCRIBE response has a:control with trackID=2 despite only having one media attribute. is this correct?
Will vlc refuse to respond to a setup without a trackID even if there is only one media type defined in the file?

to add a little spice this is on two virtual machines
the server is running ubunto 14.04 with vlc 2.1.6
the client is running windows server 2008 with vlc 2.1.6
I can stream vlc to vlc using the same source however the client vlc issues with trackID=2 so it works.
Is the recording function breaking some rtsp rules on the setup command?
The RFC is not clear so far.