[mythtv] Mythvideo internal seems broken

[Ian Caulfield]

Hi,

Since updating frm CVS to SVN, I've noticed that mythvideo using the 
Internal playback plugin seems broken - I've traced this to revision 6712, 
but I don't understand the changes well enough to see what's broken. 
Symptoms are that the frontend completely hangs, blank screen etc. The log 
just before that point says "Attempting to change from None to 
WatchingPreRecorded" then "Output filters for this channel are: ''" before 
freezing up totally. Frontend needs to be killed to fix this.

Ian