[mythtv] [PATCH] better avi seek support

[Mark Spieth]

> I have several videos I have tried to import into Myth in the past.  
> Doing a "mythcommflag --rebuild" has always been ineffectual.
tried this too. didnt work. will try --video to see if that works.

> After a jump to a new location in the file, the video is corrupt for a 
> few seconds, but then it clears up and looks fine.  Small price to pay 
> to actually be able import these files into the main Myth system.

I dont get any corruption so not sure why you get this.

mark