Here is the command line for the Val-coories:
rtmpdump -r rtmp://arte.fcod.llnwd.net:1935/a2306/o25 -a a2306/o25 -f "WIN 10,3,183,7" -t rtmp://arte.fcod.llnwd.net:1935/a2306/o25 -p
http://liveweb.arte.tv/ -o MyValcoories.flv -y MP4:liveweb/stream/2837_Ringsaga_Walkyrie_Stereo_DEF_hd.mp4
The resultant file should be 1,120,914,405 bytes in length, and the video last for two hours thirty-four minutes.
For a time - too long a time actually - I was mystified because the server could not find the "play-stream." The reason turned out to be that inconsistent Frenchmen had elected in this case to spell "Stereo" with a capital "S", whereas in the two cases already dealt with it appears as "stereo." Case-sensitivity what!