[mythtv-users] resolution discussion

[Derek Anderson]

 > 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
-------------------------------