Thanks for all your help - my friend said it wasn't Inuit, but he can't remember the film or tribe either!!
I had a little trouble with the video - once I'd downloaded it and tried to open it with Windows Media Player (I didn't know what else to choose!!), it said I couldn't and it all seemed to disappear to who knows where - guess I'll try again when I've got time to experiment ...
Cheers! R-J