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

[Moasat]

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.

> -----Original Message-----
> From: mythtv-dev-bounces at mythtv.org 
> [mailto:mythtv-dev-bounces at mythtv.org] On Behalf Of Buechler, Mark R
> Sent: Tuesday, September 14, 2004 2:54 PM
> To: 'Development of mythtv'
> Subject: RE: [mythtv] 4:3 content on 16:9 HDTV & Black bars - 
> revisited
> 
> Sony rear projection 65". The TV is typically on from 5:00PM 
> to 11:00PM weekdays and during the day on weekends. I have 
> DirecTV so all content is
> 4:3 but some is 16:9 in a 4:3 format which I expand to fill 
> the screen. I try to do that as much as I can.
> 
> - Mark. 
> 
> -----Original Message-----
> From: Jason W. Thompson [mailto:GameboyHippo at classicnet.net]
> Sent: Tuesday, September 14, 2004 2:13 PM
> To: Development of mythtv
> Subject: Re: [mythtv] 4:3 content on 16:9 HDTV & Black bars - 
> revisited
> 
> What brand of HDTV do you have?  Do you leave myth front end 
> on for long periods of time without turning the TV off?
> 
> On Tuesday 14 September 2004 10:12, Buechler, Mark R wrote:
> > I asked a question a few months ago about watching 4:3 content on a
> > 16:9 screen with the black vertical bars. I didn't get much of a 
> > response and I really haven't thought of it much until 
> recently when I 
> > looked at a movie which had some bright (almost white) scenes and I 
> > noticed, very clearly, the effects of the black bars. The 
> 4:3 area of 
> > the screen looks noticeably more yellow than the black-barred 
> > portions. I looked at the code and it seems the black bars are 
> > generated from an X definition of black (possibly coming 
> from xcolormap?).
> I'm not real familiar with X calls.
> >
> > I'd like to slow down the effect of the black bars by adjusting the 
> > black to a dark gray. Before I look further into it, has anyone 
> > already
> done so?
> > Is there a patch already out there? I'm quite concerned 
> after seeing 
> > the effects on a TV which is only a year old and doesn't 
> get much use 
> > during the day.
> >
> > Thanks, Mark.
> >
> >
> >
> >
> > Bausch & Lomb
> > 150 Years of Perfecting Vision, Enhancing Life (TM)
> >
> >
> >
> >
> >
> >
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> Bausch & Lomb
> 150 Years of Perfecting Vision, Enhancing Life (TM)
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