<br><br><div><span class="gmail_quote">On 31/07/07, <b class="gmail_sendername">John Veness</b> <<a href="mailto:John.Veness.myth@pelago.org.uk">John.Veness.myth@pelago.org.uk</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;">
Steve Smith wrote:<br>> (2) If however you are doing some scaling then what you are outputing<br>> isn't line for line the same as the signal so some form of<br>> de-interlacing is needed. When does this happen?
<br>> One case is when you output a 16:9 format mpeg on a 4:3 TV. The<br>> mpeg has 576 (for PAL) lines, but to get the right aspect ratio,<br>> this is scaled to 0.75*576=432 lines. Now our fields don't match
<br>> up so we need to modify the picture with some form of deinterlacing.<br><br>Just out of interest, my old 4:3 Panasonic TV (now since died) had a<br>mode where it would squash a picture vertically so that you were still
<br>getting 576 lines in a smaller physical space. If MythTV could output<br>suitable video for that situation, it could theoretically not need to<br>deinterlace. (I realise this doesn't apply to all 4:3 users).<br><br>
John<br><br>--<br>John Veness, MythTV user<br>_______________________________________________<br>mythtv-users mailing list<br><a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br><a href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users">
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users</a><br></blockquote></div><br><br><br>John,<br><br>Same here, my Sony has the same type of mode. Yes if you use this type of TV functionality your<br>TV is effectively a real widescreen and you shouldn't need to deinterlace.
<br><br>Cheers<br><br>Steve<br>