<DIV>An SA Tivo connected directly to cable is tuning analog video which is only a matter of changing the tuner frequency, and that happens in milliseconds. There's nothing inherently slower about a satellite tuner. Any *digital* cable or satellite video has the latency I described because of the program stream acquisition and the MPEG decode. If the satellite were analog (like C-band) it should be faster.</DIV>
<DIV> </DIV>
<DIV>I'm pretty sure that the live video you see coming out of a Tivo from an analog input has been digitized, which introduces some latency but would probably still be sub-second. MythTV could conceiveably achieve the same speed, given an analog input source.</DIV>
<DIV><BR><B><I>Michael Janer <michael@janernet.com></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">> FYI, I just did some channel changes with my DirecTivo and it takes 2-3 seconds from the key >press to when the new video starts. That's about as good as you can expect with digital video >because to change an mpeg stream you have to wait for an I-frame and fill up the decoding >buffer and that takes time. There's just no way you can change channels as fast as you can >with analog. If you have a digital cable or satellite box that's separate from the DVR then you >have potentially a decode, an encode, and another decode, so 4-5 seconds doesn't seem out of >line. <BR><BR>FYI, I just did channel changes on my SA Tivo connected directly to cable, and it takes less than one second. You are getting a 3 second lag because of your Direct Tivo having to tune to a different channel on the dish. Nothing you can do about
that.<BR><BR>Honer<BR><BR>________________________________<BR><BR><BR><BR>> ATTACHMENT part 2 application/ms-tnef name=winmail.dat<BR>_______________________________________________<BR>mythtv-users mailing list<BR>mythtv-users@mythtv.org<BR>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users<BR></BLOCKQUOTE><p><hr SIZE=1>
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