KSV
Thanks for the coments
However - I have done exactly as stated - even started from scratch again.
Downloaded you 'command.bat creating' version.
Copied the RTMPSRV and
RTMPdump commands to the
RTMPexplorer folder (thus over-writing what was there)
Copied the URL to RTMPEXPLORER and started the player therein
Stopped both RTMPSRV and RTMPEXPLORER as soon as I saw some traffic.
Edited the COMMAND.BAT file to extract the relevant dump command
Opened a Command terminal
Copied the dump command plus parameters (done as soon as possible, as you indicated that there was a time-limited authorisation parameter)
.... and I get the server 6/9 problem that I detailed above, with RTMPDUMP stopping execution without doing the download.