Just to add a data point, in my experience on my 1Ghz PIII, transcoding
from 720p to 720x480 took about 6 minutes per minute of video.<br><br><div><span class="gmail_quote">On 12/4/05, <b class="gmail_sendername">Chris Ribe</b> <<a href="mailto:chrisribe@gmail.com">chrisribe@gmail.com</a>
> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">If your processor could handle HD decoding, your video card would
handle the downconverting on playback. You could avoid the
digital-analog-digital round trip while still using your current
display. <br>
<br>
I don't know how much recording you do on a daily basis, but
transcoding from HD to SD will probably take you 3 hours for every hour
of video recorded.<br><br><div><span class="q"><span class="gmail_quote">On 12/4/05, <b class="gmail_sendername">glen martin</b> <<a href="mailto:lists@locutory.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
lists@locutory.org</a>> wrote:</span></span><div><span class="e" id="q_107f8b175e7f8767_2"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Chad wrote:<br><br>>On 12/4/05, Chris Ribe <<a href="mailto:chrisribe@gmail.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">chrisribe@gmail.com</a>> wrote:<br>><br>><br>>>The best bang for the buck upgrade path is probably to just upgrade the CPU
<br>>>on your frontend to something that can handle HD decoding.<br>>><br>>><br>>I completely agree. I can't seem to find a STB that works with ATSC<br>>that is less than the cost of a AMD64 3200 (which is enough power to
<br>>decode a HD stream). I'd rather fork over the ~200 bucks to build a<br>>high def capable frontend than feed something into something, and then<br>>that something out to something, which may be capable of then
<br>>reconverting that something into something (where something is analog<br>>or digital depending on where it's placed ;) ).<br>><br>:) Put it like that and I have to agree.<br><br>The other angle is the 'something that can handle HD decoding' is
<br>probably non-silent. My existing frontend is an EPIA, and diskless. And<br>then there is 'something that can *display* HD', and that is the 40 or<br>50 inch 16:9 plasma than I haven't quite got around to buying yet, and
<br>probably won't for a while.<br><br>Downconverting ATSC to 480i and displaying on my 32-inch analog TV,<br>while less than ideal, still gives me the aspect ratio while I wait for<br>the opportunity to spend several thousand $ on new equipment. Hence,
<br>transcoding, at least for the next year. But I suppose would take<br>massive code changes plus a 200-300 watt CPU :) to transcode in real time.<br><br>The usual transcoding route, waiting for shows to finish and then
<br>covert, would seem to work fine most of the time. And the external HD<br>tuner with 480i output would seem the best choice for shows that can't<br>wait. Or maybe just run the external tuner direct into the TV and forego
<br>pause ... :/<br><br>Thanks to all for your comments.<br><br>glen<br><br><br>_______________________________________________<br>mythtv-users mailing list<br><a href="mailto:mythtv-users@mythtv.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
mythtv-users@mythtv.org
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</span></div></div><br>
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