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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>For anyone who’s trying to do HDTV playback, here is
some useful info that it took me a while to find the answers to.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>If this info was added to the hardware section of the
documentation on mythtv.org, it would probably be useful to other people
seeking to do HD playback.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-if you’re using an ASUS <span
style='mso-spacerun:yes'> </span>Pundit for your front end, the drivers
for its graphics chips under Linux do _<i><span style='font-style:italic'>not</span></i>_
take advantage of the <span class=SpellE>SiS</span> MPEG-2 decoding hardware on
the motherboard.<span style='mso-spacerun:yes'> </span>This info is from </span></font><st1:PersonName><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Thomas
Winischhofer</span></font></st1:PersonName><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>, who wrote the drivers.<span
style='mso-spacerun:yes'> </span>So you’ll either need an extra
card to do the decoding or a powerful enough CPU.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-for doing 720p playback (1280 X 720), a 2.4GHz P4 should be
sufficient, for higher <span class=SpellE>res</span>, something faster.<span
style='mso-spacerun:yes'> </span>This is what a helpful support guy at <span
class=SpellE>pcHDTV</span> said:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>I'm
using a 2.4GHz machine and for 1280x720p playback there are no problems at
all.<span style='mso-spacerun:yes'> </span>For 1920x1080i->1920x1080p
with the better <span class=SpellE>deinterlacing</span> methods done in real
time it seems to push a little to hard but it is fine for Bob and Weave or with
an <span class=SpellE>nvidia</span> card using hardware <span class=SpellE>accel</span>.<span
style='mso-spacerun:yes'> </span>When using hardware acceleration with
mpeg decoding a 1.8GHz machine works great but if <span class=GramE>your</span>
not using a <span class=SpellE>nvidia</span> card then I suggest something
above <o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>2.4Ghz</span></font></span><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-finally, there doesn’t seem to be support in Myth for
easily using both the NTSC and the HD tuner in the <span class=SpellE>pcHDTV</span>
card.<span style='mso-spacerun:yes'> </span>There are at least one or two
people working towards adding this, but the impression I got was not to hold my
breath.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-Jerry<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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