Invalid AMF parameter with RTMPDump and RTMPDumpHelper

[Nomorecocktails]

URL: http://www.bbc.com/news/uk-27989893

I get invalid AMF parameter with RTMPDumphelper - the a with the oomlat. What exactly does this mean? And how to get the video without Helper?

[denobis]

-r "rtmp://cp45413.edgefcs.net/ondemand?auth=daEdKbTcBbcctcFdybNbPbLb2cZbYamcTdR-btQTO3-bWG-HoqFHoypODoHrxL&aifp=v001&slist=public/mps_h264_hi/public/news/uk/1087000/1087427_h264_1500k.mp4"  -y "mp4:public/mps_h264_hi/public/news/uk/1087000/1087427_h264_1500k.mp4"    -a "ondemand?auth=daEdKbTcBbcctcFdybNbPbLb2cZbYamcTdR-btQTO3-bWG-HoqFHoypODoHrxL&aifp=v001&slist=public/mps_h264_hi/public/news/uk/1087000/1087427_h264_1500k.mp4"

auth expires but you can use atresdownloader