[mythtv-users] resolution discussion
Derek Anderson
public at kered.org
Sun Sep 7 19:24:31 EDT 2003
> Uh, the 42" Gateway plasma TV I'm seeing is a full-blown HDTV, and can
> do up to 1080 lines...
haha. ok, so what was that like, released yesterday? ;-p that's
great! and ~$4k isn't bad. i was talking about the EDTV model however.
$2700 :)
Jarod C. Wilson wrote:
> On Sunday, Sep 7, 2003, at 08:47 US/Pacific, Derek Anderson wrote:
>
>> if you're in NTSC land, i'm interested in what justifications you have
>> for going with an 800x600 xfree config. your regular TV (and even
>> many plasmas - like the 42" gateway i'm considering) have only 480
>> lines of resolution.
>
>
> Uh, the 42" Gateway plasma TV I'm seeing is a full-blown HDTV, and can
> do up to 1080 lines...
>
>> it would seem upsampling your 480 line input to 600 lines, and then
>> downsampling that again (w/ your TV-OUT driver) would give you a loss.
>
>
> Don't forget the other aspect. If you capture at full NTSC resolution
> (720x480), you're going to lose some clarity if you only run 640x480.
> It's kind of a crap-shoot. Try a few different routes, and pick what
> looks best to you. I currently always capture at 720x480, and I see very
> little difference in playback quality even if I run 1024x768.
>
>> i mean, am i off my rocker here? is there something i'm missing?
>
>
> TV isn't the only thing people use their MythTV boxes for. The
> resolution of a high-quality widescreen Divx rip is often something in
> the ballpark of 768x432, so you'll lose some clarity there if you go
> 640x480. Some people also browse the web on their MythTV box, which to
> me, is painful at 640x480. I can think of many reasons to run higher
> than 640x480...
>
> One other reason is HDTV captures. You'll want quite a bit higher
> resolution for those (my pcHDTV card should arrive sometime this week).
> I'm actually going to be running 1920x1080 at that point, with my MythTV
> box hooked to my 47" HDTV via component video, rather than the current
> S-Video hookup.
>
> --Jarod
>
>
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--
-------------------------------
Derek C. Anderson
Senior Software Engineer
Computer Sciences Corporation
http://kered.org/professional
public at kered.org
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