[mythtv] [PATCH] Add AFD support for aspect 'magic'

Hamish Moffatt hamish at cloud.net.au
Sun Jun 5 03:33:08 UTC 2005

On Sun, Jun 05, 2005 at 12:53:09PM +1000, William Uther wrote:
> letterboxed locally.  For signals that really are 16:9, you want to  
> switch the aspect ratio override to 'off'.  Switching between 'Fill'  
> and 'Off' can require cycling through a whole list of other 'aspect  
> ratio' settings - something that I find a little annoying at times.

Kristof Pelckmans posted a patch to this list in June last year
which allowed you to customise the aspect ratios that were included
in the cycle you get by pressing 'w'.

For Aus DVB material on a 4:3 TV, I had 16:9 and 4:3 Zoom in my list if
I remember correctly. (I now have a 16:9 TV so I don't need to use
anything but Off any more.)

Isaac's response was that it is unnecessary, so it didn't make CVS.

Personally I think if you have our situation in Australia and a 4:3
TV it's very necessary, but that wouldn't be obvious with analog
TV which was the most common at the time.

> i) The aspect ratio of the incoming signal.  This is usually correct  
> for DVB in Aus, but I can imagine people wanting to over-ride it.  I  
> don't know how often this changes however - it should be set and  
> forget, shouldn't it?

It's correct when you include the pillarboxing already done by the
network. However for material that is really 4:3 you might say it's
incorrect. The UK AFD spec is intended to help with this, but last
I checked it wasn't used in Australia.

These days a significant portion of programs are transmitted in
16:9 anyway, with less need to switch. Also after a while I just
started to always use the zoom on the 4:3 TV - no sense watching
33% black bars all the time. Now I have a 16:9 display anyway.

Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>

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