[mythtv] 4:3 content on 16:9 HDTV & Black bars - revisited

[Buechler, Mark R]

My TV only has those modes available when I send an NTSC signal to it
(composite or svideo). I use DVI. Any mode I send to my TV will use the
entire screen. So, if I use a 4:3 modeline the picture will linear stretch
across the screen - very ugly. I could get around the issue by hooking up
through svideo but that sorta goes against my reason for buying an HDTV in
the first place.

- Mark.

-----Original Message-----
From: Isaac Richards [mailto:ijr at po.cwru.edu] 
Sent: Tuesday, September 14, 2004 7:25 PM
To: Development of mythtv
Subject: Re: [mythtv] 4:3 content on 16:9 HDTV & Black bars - revisited

On Tuesday 14 September 2004 07:06 pm, Moasat wrote:
> I've done a version of a non-linear horizontal image scaling function 
> that would stretch the edges of the video to the edge of the TV but 
> keep the center more or less at 1-to-1.  My Hitachi HDTV has this mode 
> built-in, as do many other HDTV's I imagine.  The problem with the 
> code right now is that it is written in C and only has MMX code for 
> Intel assembly syntax and I assume it needs to be AT&T assembly.  The 
> C code would most likely not be fast enough, even on the fastest 
> systems right now.  If someone would like to convert it, I could make 
> it available.  Otherwise, I'll continue to work on converting it to AT&T.
>
> Besides that, I currently have no idea how it would get integrated 
> into MythTV or MythVideo.  I planned to jump off that bridge when I got to
it.

If your TV has the mode built in, why not simply send 4:3 content and let
your TV stretch it?

Isaac
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