got it, thanks a lot!<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>