[mythtv] Thoughts on new commercial detection option

[Mark Edwards]

> I have noticed that more and more shows are shown in letterbox (in 4:3
> format) and have black bars on the top and botton during the 
> show but switch to full 4:3 during commercials. Would it be 
> possible to add another commercial detection scheme that 
> looks for the letterbox format with the black bars, and if 
> present goes back to the beginning of the show and flags 
> commercials when the black bars go away?

An even simpler option for DVB users (at least in the UK) would be to detect
the "Aspect ratio changed" message that we get at the start and end of
adverts. Would be great because the other methods are fairly unreliable
here.

Mark