Kudos to David and YafaRay team! [:)]

And some extra Kudos to you, dear Emmanuel for this extreme fast response!!

Note also that version 1.1 of the plug-in uses named cameras to let you generate videos more effectively in your plug-in, without the need to regenerate the scene at each frame.

But how to use "named cameras", or do you mean the named positions ("point of view") of the "visitor"?

And when I create a video, how to choose one of the 2 rendering engines?

Many, many thanks again!!!