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Oh OK then, perhaps this is a great place to start. When encoding a dvd to 264 (I used the h264enc script) I ALWAYS get stuttering during panning scenes (or some motion scenes) on playback. It is not the kind of stuttering that you would expect when your CPU is lagged (I've checked that anyway I'm not even using 10% of one core of a quad cpu), it's more of a tearing look, though it isn't that either, it's definitely related to the encoding. What I mean is if the camera is flowing from left to right while recording a scenery shot, the 'pan' will not be smooth and visually looks stutterish (a bit like a slow LCD monitor watching sports). I have researched this on the web and while there are quite a few people experiencing it, there doesn't appear to be a fix that I can see. Suggestions have in forums been mostly centred around hardware which I'm sure is not the problem for me. It COULD be a playback issue and not an encoding issue, but I don't believe so since other encodings in xvid I have received do not experience this issue (or if they do it is not noticeable). It could be a mencoder issue and not a 264 issue, though I'm not sure and am hoping for some guidance on that from this list.<BR>
<BR>
I am running OpenSuSE 11 (though have run various other flavours with same result) and compile all the codecs and libraries, mplayer etc from source. I've tried different versions of 264 codec and mplayer with no difference. This is not a random application starting up and hogging CPU or anything while watching).<BR>
<BR>
Would someone be able to say absolutely that they have or haven't seen this particular problem occur with x264? Or that it will definately be a mplayer problem because of x reason? Or perhaps offer some suggestions to help pin it down, it's the only thing making 264 not an absolutely perfect encoder for me! <IMG SRC="cid:1215295562.11538.23.camel@exlt01.getalife.co.nz" ALIGN="middle" ALT=":)" BORDER="0"><BR>
<BR>
The command I'm currently using in mencoder is as below:<BR>
<BR>
First pass options<BR>
~~~~~~~~~~~~~~~~~~<BR>
mencoder "dvd://1" -o /dev/null -dvd-device /home/quentinj/ISO/S.ISO -vf crop=720:560:0:8,softskip,harddup -aid 128 -channels 6 -oac copy -ovc x264 -x264encopts pass=1:bitrate=1000:turbo=2:me=umh:me_range=24:me_prepass:nodct_decimate:nointerlaced:8x8dct:nofast_pskip:trellis=1:partitions=p8x8,b8x8,i8x8,i4x4:mixed_refs:bime:keyint=250:keyint_min=25:frameref=4:bframes=16:b_adapt:b_pyramid:weight_b:direct_pred=auto:subq=6:brdo:chroma_me:cabac:aq_strength=0.5:deblock=0,0:nossim:nopsnr:threads=auto -passlogfile /home/quentinj/.h264enc/h264enc.0rX1F0LW/h264.log<BR>
<BR>
Second pass options<BR>
~~~~~~~~~~~~~~~~~~~<BR>
mencoder "dvd://1" -o "/home/quentinj/s.avi" -dvd-device /home/quentinj/ISO/S.ISO -vf crop=720:560:0:8,softskip,harddup -aid 128 -channels 6 -oac copy -ovc x264 -x264encopts pass=2:bitrate=1000:me=umh:me_range=24:me_prepass:nodct_decimate:nointerlaced:8x8dct:nofast_pskip:trellis=1:partitions=p8x8,b8x8,i8x8,i4x4:mixed_refs:keyint=250:keyint_min=25:frameref=4:bframes=16:bime:b_adapt:b_pyramid:weight_b:direct_pred=auto:subq=6:brdo:chroma_me:cabac:aq_strength=0.5:deblock=0,0:nossim:nopsnr:threads=auto -passlogfile /home/quentinj/.h264enc/h264enc.0rX1F0LW/h264.log<BR>
<BR>
Thanks,<BR>
<BR>
Q<BR>
<BR>
-----Original Message-----<BR>
<B>From</B>: <A HREF="mailto:x264-devel-request@videolan.org">x264-devel-request@videolan.org</A><BR>
<B>Reply-To</B>: <A HREF="mailto:x264-devel@videolan.org">x264-devel@videolan.org</A><BR>
<B>To</B>: <A HREF="mailto:x264-devel@videolan.org">x264-devel@videolan.org</A><BR>
<B>Subject</B>: x264-devel Digest, Vol 14, Issue 6<BR>
<B>Date</B>: Sat, 05 Jul 2008 12:00:03 +0200<BR>
<BR>
<BR>
<TT>Message: 1</TT><BR>
<TT>Date: Fri, 4 Jul 2008 11:31:25 -0600</TT><BR>
<TT>From: "Jason Garrett-Glaser" <<A HREF="mailto:darkshikari@gmail.com">darkshikari@gmail.com</A>></TT><BR>
<TT>Subject: Re: [x264-devel] Stuttering of panning scenes</TT><BR>
<TT>To: "Mailing list for x264 developers" <<A HREF="mailto:x264-devel@videolan.org">x264-devel@videolan.org</A>></TT><BR>
<TT>Message-ID:</TT><BR>
<TT> <<A HREF="mailto:28f2fcbc0807041031j345e4c6x439e0deb02399e3a@mail.gmail.com">28f2fcbc0807041031j345e4c6x439e0deb02399e3a@mail.gmail.com</A>></TT><BR>
<TT>Content-Type: text/plain; charset=ISO-8859-1</TT><BR>
<BR>
<TT>2008/7/4 Quentin Jackson <<A HREF="mailto:Quentin.Jackson@exclamation.co.nz">Quentin.Jackson@exclamation.co.nz</A>>:</TT><BR>
<TT><FONT COLOR="#737373">> I'm sure this must have been brought up before, but I can't find anything so</FONT></TT><BR>
<TT><FONT COLOR="#737373">> am trying here</FONT></TT><BR>
<TT><FONT COLOR="#737373">></FONT></TT><BR>
<TT><FONT COLOR="#737373">> I'm sure you have all seen the stuttering of encodings during panning</FONT></TT><BR>
<TT><FONT COLOR="#737373">> scenes, and seemingly a lot of motion scenes.</FONT></TT><BR>
<BR>
<TT>I have no idea what you're talking about, so you're wrongly sure ;)</TT><BR>
<BR>
<TT>Dark Shikari</TT>
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