[popcornmix]

If eye swapping is required, this sounds like it should be set in the OSD on a per-movie basis, where it could also be set as the default for all movies?

Yes. There is an OSD setting, but it's not been plumbed in yet for MVC.
I'm wondering whether it is actually needed.
It seems hard to imagine that a BluRay would make it impossible to detect which view belongs to which eye, and so require every user who ever watches it to manually select the correct option.
And assuming that information is in the MVC stream, then we should parse it correctly. If the information is there and we are not parsing it, then fixing it there would be preferable.

For something like a re-encoded half-TAB 3D movie, then there are more stages where someone may have got things wrong, so a manual override makes more sense
(although I've got ~50 3D samples of different formats and I've never required this so far).

But as the gui/osd support is already there I'd may as well plumb it in.
But, any samples of files where this isn't determined automatically would be interesting.