[mythtv-users] New 50" Plasma, setting Myth for it?

[Nick Rout]

On Wed, Oct 21, 2009 at 9:10 AM, David Knight <dlknight at sdf.lonestar.org> wrote:
> On Tue, October 20, 2009 1:02 pm, Jean-Yves Avenard wrote:
>> Hi
>>
>> 2009/10/20 Bruce Nordstrand <brucen at ksl.com.au>:
>>> � I'm running a Panasonic Viera 42PX80B
>>>> (native resolution of 1368x768).
>>> I've set my X config to output in 1080p which
>>>> is then downscaled by the
>>> TV.
>>>
>>> From my xorg.conf -
>>>
>>> SubSection "Display"
>>>
>>> #
>>>> 1080p 720p 480p
>>> Depth 24
>>> Modes "1920x1080_60" "1280x720_60"
>>>> "720x480_60"
>>> EndSubSection
>>> Excellent, thanks Dave. I'll try that out when the unit arrives....
>>> Should
>>> have been today but they stuffed up delivery :(
>>
>>
>> I personally think that this is not a good advice, plus as an
>> Australian resident those mode don't apply for you.
>>
>> Setting your screen to 1080i, means your mythfront will be upscaling
>> whenever you watch SD content, then your TV downscales to fit in its
>> screen.
>> Second, you're in Australia, it's 50Hz, there's no broadcast of 720p
>> nor 480 lines content.
>>
>> If you want simplicity and not have to worry about anything, configure
>> your PC to output 720p. The TV will handle everything the way it
>> should with minimal loss of information/quality.
>>
>> If you want to let mythtv do more work and probably give you a  slight
>> edge quality wise, find the right modeline to output the native
>> resolution of your panel: 1368x768 , actually I would first try
>> 1360x768 as it's nicely a multiple of 16 (perfect for mpeg2)
>>
>> JY
>>
>>
>
> Now you have my attention :)
>
> I have the manual for my TV in front of me an maybe I was wrong about the
> native resolution. In the Specifications it lists the Number of Pixels as
> 786,432 (1,024 (W) x 768 (H)) [3,072 x 768 dots].
>
> It also has a VGA input which I used in the past and HDMI (currently
> using). The VGA table has several mode lines (I will just list the
> 1024x768 upwards):
>
> 1024x768 @60Hz, 1024x768 at 70Hz, 1024x768 at 75Hz, 1024x768 at 85Hz
> 1280x1024 @60Hz, 1366x768 @60Hz.
>
> HDMI table supports 720/60p/50p, 1080/60i/50i/60p/50p/24p
>
> Back in the specifications table again it says:
>
> PC Signals = VGA, SVGA, XGA or SXGA(compressed)
>
> So I take it my native resolution is 1024x768? if this is so would I be
> best using the VGA input with a 1024x768 modeline rather than the HDMI
> input?

If you do you'll have to tell mythtv (and mplayer if you use it) that
the screen is 16:9 not 4:3. I can't remember where in mythtv you set
this, but in mplayer you give it the switch -monitoraspect 16:9