I think that the 5 extra pixels of 6-tap filter which you said is integer pixels, is it right?<br><br><div><span class="gmail_quote">2006/12/15, Loren Merritt <<a href="mailto:lorenm@u.washington.edu">lorenm@u.washington.edu
</a>>:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">On Fri, 15 Dec 2006, ��� wrote:<br><br>> in x264, the 3 half-pel planes are interpolated after encoding each frame,
<br>> which is implemented in x264_frame_filter().<br>> but I don't understand why more 8 pixels are interpolated than origin image<br>> width, and I want to know if the 3 half-pel planes could be just<br>> inpterpolated without dealing with the 8 pixels.
<br>> thanks!<br><br>Because the interpolation is a 6-tap filter, 5 extra pixels are needed (3<br>on the top & left, 2 on the bottom & right). The number is then rounded up<br>to the size of an MMX register.<br>
<br>--Loren Merritt<br></blockquote></div><br>