So why does my DVD player keep pausing?

It's been something which I've wondered about for some time.

When watching a film on the DVD player, it seems to 'pause' every so often on a single frame.

It's not that annoying I suppose, but it did make me wonder if there was something wrong with the player itself.

It actually turns out to be something quite straight forward.

When the dual layer DVD disc makes the transition from one layer to the other it stops for perhaps a second.

I for one would have hoped that solving this would be relatively straight forward - but no, all new releases I buy seem to have the same issue.