[mythtv] [PATCH]Black border filter

[Hamish Moffatt]

On Tue, Sep 07, 2004 at 10:00:41AM +0100, Nick Craig-Wood wrote:
> On Tue, Sep 07, 2004 at 09:39:03AM +1000, Christian Hack wrote:
> > > > Australian DVB stations love transmitting:
> > > > 1) 4:3 inside 16:9
> > > > and
> > > > 2) 16:9 inside 4:3 inside 16:9 (if you know what I mean...)
> > > Not really : is the last 16:9 your screen aspect ?
> > 
> > No my screen is 4:3. ALL transmissions are 16:9 here. If a program is only
> > 4:3 I get black borders all around (top/bottom due to displaying 16:9
> > transmission on 4:3 TV, and left/right due to 4:3 program transmitted on
> > 16:9). In this case there are no black lines horizontally.
> 
> Yes some channels are fond of doing 1) in the UK (DVB-t).  Some
> channels do actually show 4:3 stuff at 4:3 though!  I only have 4:3
> screens and find the tiny picture in the middle (as you describe
> above) annoying! Just about all adverts seem to be 16:9 here so I
> haven't seen 2).

In Australia, all transmissions are 16:9. All stations do it, and they
never switch resolutions. And when they do transmit 4:3 material, they
pillarbox it to 16:9.

Then when you play a 16:9 picture on a 4:3 TV, Myth letterboxes it. The
end result is black borders on all sides. 16:9 Zoom mode is your friend
in this case.

I have seen a few ads like the OP described where it's 16:9 within 4:3
(probably for the analogue transmission), which is then within 16:9
again on DVB. Weird.

I'm pretty keen to see the auto-detect working with vertical areas. I'll
see if I can find time to hack on Kristof's code..

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