Ab
Thanks for that, my suggestion was he send me the file and I would use gimp, or something else on my linux machine, but will note your idea for future reference.
Jh
Don't think that is the problem but, again, will note that.
In the event, he has deleted the file (not a patient man, typically Finnish) so I will never find out what is possible.
I did find that Samsung has some clever? program for making animated gifs, whatever they may be, and wondered whether that had been enabled by accident.
Thanks to both of you.