<div>Well I must admit - by the sounds of things your MMX implementations are making big differences. I would love to make the most out of Dual Core / Dual Processor Altivec G5's - I just think/fear that since Apple have gone Intel - people aren't going to bother trying to keep the Altivec ball rolling.
</div>
<div> </div>
<div>There are open sourced Altivec libraries being produced which are meant to improve code because it's all hand-written - but this is assuming x264 uses these libraries.</div>
<div> </div>
<div>At this point I'm just researching into the background - I have a degree to write up for the 31st and exams in May - but I want better performance from x264 on my Dual Processor Mac - and I want to help make it quicker.
</div>
<div> </div>
<div>On my Dual G5 I'm currently seeing 10-13 FPS on 1Mbps for DVD resolution on Eric Petit's Handbrake (<a href="http://handbrake.m0k.org/">http://handbrake.m0k.org/</a>) application - so im not exactly sure what the specifics are in terms of codec parameters - id need to look that up one day....
</div>
<div> </div>
<div>Firas<br><br> </div>
<div><span class="gmail_quote">On 3/10/06, <b class="gmail_sendername">Loren Merritt</b> <<a href="mailto:lorenm@u.washington.edu">lorenm@u.washington.edu</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">On Fri, 10 Mar 2006, Firas Al-Tahan wrote:<br><br>> Loren Merrit:<br>><br>> Why did this stop? Is it because Apple went with Intel? Off the top of your
<br>> head - was it optimized very well?<br>><br>> From what I'm seeing, Core Duo Mac Mini's at 1.63GHz are getting double the<br>> frame rates of my Dual Processor G5 at 2.0GHz. As you can imagine - I'm not<br>
> impressed! I can see there has been Altivec work done - but I'm not sure how<br>> much and how up to date it is.<br>><br>> Where / who would I need to get in contact with to get the ball rolling<br>> again?
<br><br>No one explicitly discontinued support or anything. It's just that none<br>of the current developers has a Mac.<br>Eric Petit wrote the altivec stuff that's there now, but he hasn't been<br>active in x264 lately.<br>
<br>I can't comment on the optimization quality of the altivec, but we have<br>many mmx funtions with no altivec implementations.<br><br>--Loren Merritt<br><br>--<br>This is the x264-devel mailing-list<br>To unsubscribe, go to:
<a href="http://developers.videolan.org/lists.html">http://developers.videolan.org/lists.html</a><br><br></blockquote></div><br>