[mythtv-users] hdtv modelines

[Marius Schrecker]

> Hi,
>
>   Next thing to set up is my xorg.conf for dvi out.
>
> I have to say I'm very confused about how dvi modelines work. I've never
> used anything other than analogue monitors before.
>
> Perhaps someone can correct my assumtions as I ramble along:
>
> My tv will support 480p-60Hz, 576p-50Hz, 720p-50Hz, 720p-60Hz, 1080i-50Hz
> and 1080i-60Hz.
>
> I'm guessing that non-interlaced is generally better, right? So my best
> resolution would then normally be 720p-60Hz, but what about when I'm
> watching interlaced material, like analog tv signals? Is it better to let
> the tv or myth do the deinterlacing?
>
> The analog resolutions the tv supports are 1024x768, 1280x768, 1360x768
> and 1366x768. Am I right in assuming bigger is better here?... I think ati
> cards hve a divider of 4 right? So 1368x768 is about as close to 16:9 as I
> can get.
>
> Don't know if I need to be thinking of this, or whether I should just pick
> a standard hdtv modeline.
>
> I looked at this page:
> http://www.linuxis.us/linux/media/howto/linux-htpc/video_card_configuration.html
>
> Wish there were a little more description about what each modeline
> actually does.
>
> I don't have a hdtv source at the moment, so ATSC means little, sources
> are analog tv 'PAL' dvd (mostly PAL) and whatever I happen to have lying
> around in mythvideo.
>
> Can someone point to a better site where the modelines are explained?
>
> Thanks
>
> Marius

Looking further at generating modelines, I tried to use videogen , but
need to know the max dotclock of my video adapter.  Googled til I'm blue
but can't find anything.

How do I ascertain the max dotclock of a card (Connect3d Radeon X300 256 MB)?

Marius