<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 17 Feb 2009, at 18:05, Andy Ritger wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><blockquote type="cite">Are the even and odd frames scaled individually before applied to the<br></blockquote><blockquote type="cite">resulting surface, or are they applied to the screen, then scaled?<br></blockquote><br>I believe the latter: the content is deinterlaced at the resolution<br>of the content, and then the progressive frame is scaled to the size<br>specified by the video player.<br><br>The documentation here may be helpful (particularly the data flow diagram):<br><br> <a href="ftp://download.nvidia.com/XFree86/vdpau/doxygen/html/index.html">ftp://download.nvidia.com/XFree86/vdpau/doxygen/html/index.html</a><br><br>Deinterlacing is done in the VdpVideoMixer, and I expect scaling is done<br>as part of constructing the VdpOutputSurface.<br><br>It may be worth looking at what deinterlacing configuration your video<br>player is using. E.g., is it requesting temporal or temporal-spatial<br>deinterlacing?<br></span></blockquote></div><div><br></div>Neither, I'm trying to not use deinterlacing in the graphics card. <div><br></div><div>Is it technically (theoretically) possible to rearrange the order of merging the fields and scaling?</div><div><br></div><div><div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>-- </div><div>Torgeir Veimo</div><div><a href="mailto:torgeir@pobox.com">torgeir@pobox.com</a></div><div><br></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"> </div><br></div></body></html>