[mythtv-users] Displaying 1080i on 4:3 standard TV

[Mike Schlottman]

I tried this last night and the 720x480 mode line helped.  I am now able
to use 16:9 stretch aspect override to get HD content displayed better.
What I have now is the image is centered.  Instead a big section of the
right side cut off, a smaller portion of both the left and right is cut
off.

I think I might try another modeline tonight that is 640x360.  

I'm not sure what you mean by overscan.  I don't think you are referring
to the displayed image being larger than the TV.  I can adjust that with
nvidia-settings.  I had played with the separate video settings for gui
and video.  None of the changes I made, ever made sense compared to the
output.  I only ended up with video that was twice as wide as it was
before, so that even less of the picture showed up on the screen.  I
have not seen any good explanations of how to configure these settings.

       mike


> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-
> bounces at mythtv.org] On Behalf Of Steven Adeff
> Sent: Tuesday, March 21, 2006 5:08 PM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Displaying 1080i on 4:3 standard TV
> 
> On 3/21/06, Mike Schlottman <mschlott at spe.org> wrote:
> > >
> > > X11 is the standard unaccelerated video output. -vo tells mplayer
to
> > > use it instead of Xv for example.
> > >
> > > Try using the 7676 drivers.
> > >
> > > is your 4:3 tv an SDTV or an HDTV?
> > >
> > > have you looked at the output on a monitor?
> > >
> > I have not looked at it on a monitor yet.  I got bogged down in
playing
> > with X settings last night.  That is also on the todo for tonight.
> >
> > My TV is SDTV.   It is an older Panasonic with S-video and Composite
> > inputs.  I don't have any way of connecting the composite inputs
though.
> >
> >      Mike
> >
> 
> Ok, was getting confused. You'll want to setup for S-Video output for
> 480i. to your TV. Your modeline should be something around 720x480.
> YOU WILL GET OVERSCAN. Its inherint in how TV's work. You can play
> around with the modeline to try and eliminate it. Theres plenty of
> posts in the list you can search through on this, and probably some
> articles in the Wiki that will help. You can also tell Myth to
> compensate for the overscan to "shrink" the output area of the videos
> and gui.
> 
> as for playing back HD content, it should work, it will be scaled to
> 720x480 (or whatever your final modeline resolution is). It should
> include black bars on top and bottom if everything is setup correctly
> as well. It should look much better than the non-hd station but will
> obviously not be as good as a true HDTV.
> 
> You'll also still need the increased processing power to playback the
> streams.
> 
> --
> Steve
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