[mythtv] Long recordings (18:20:59++)

[f-myth-users at media.mit.edu]

    > Date: Thu, 02 Aug 2007 11:36:50 +0300
    > From: Markus Ingalsuo <markus.ingalsuo at osp.fi>

    > Hi!

    > I just hade the opportunity to record a very long show from DVB, Live
    > Earth, which is 22+ hours. The position counter stops at 18:20:59 while
    > watching the recording. Fast forward/reverse still works.

Hmm.  1100 minutes and 59 seconds.  No idea why that might be
significant, but it's sure suspicious.

(Or 523 seconds more than 2^16 seconds.  There a 16-bit-wide field
in the database in the relevant spot?)