<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 12pt;
font-family:Calibri
}
--></style></head>
<body class='hmmessage'><div dir='ltr'>Folks,<div><br></div><div>Is this a very difficult question or a stupid question? No one on this list has answered it for while now. </div><div><br></div><div>x264 is a fantastic piece of work but without understanding what all the different combinations will do its hard to use it. I would like to understand and document (if possible) what all the different combinations of the rate control settings (including VBV settings) do to the final encode.</div><div><br></div><div>If someone knows of a place where all the different combinations of bitrate, max-bitrate, vbv-bufsize, vbv-maxrate, ratetol, pass, crf, vbv-init, crf-max are documented please let me know.</div><div><br></div><div>Thanks,</div><div>-Purvin</div><div><br><div><hr id="stopSpelling">From: purvinp@hotmail.com<br>To: x264-devel@videolan.org<br>Date: Fri, 9 May 2014 07:56:21 -0400<br>Subject: Re: [x264-devel] x264 rc mode settings clarification<br><br>
<style><!--
.ExternalClass .ecxhmmessage P {
padding:0px;
}
.ExternalClass body.ecxhmmessage {
font-size:12pt;
font-family:Calibri;
}
--></style>
<div dir="ltr"><div>Reposting....</div><div><br></div><div><br>
<style><!--
.ExternalClass .ecxhmmessage P {
padding:0px;
}
.ExternalClass body.ecxhmmessage {
font-size:12pt;
font-family:Calibri;
}
--></style>
<div dir="ltr">Hi<div><br></div><div>I have a question about the rate control settings in x264. What is the implication of using the following settings?</div><div><br></div><div>1st pass:</div><div><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">vbv-bufsize=10000 bitrate=3400 vbv-maxrate=3800 ratetol=0.1 -pass 1</span></div><div><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;"><br></span></div><div><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">2nd pass:</span></div><div><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;">everything same as above with -pass 2</span></div><div><br></div><div><font color="#1f497d"><span style="font-size:15px;">Is this going to be be CBR/VBR/ABR? Will if target a fixed file size or bitrate or both?</span></font></div><div><font color="#1f497d"><span style="font-size:15px;"><br></span></font></div><div><font color="#1f497d"><span style="font-size:15px;">Thanks I am just trying to get all the different parameters sorted out.</span></font></div><div><font color="#1f497d"><span style="font-size:15px;"><br></span></font></div><div><font color="#1f497d"><span style="font-size:15px;">Thanks,</span></font></div><div><font color="#1f497d"><span style="font-size:15px;">-Purvin</span></font></div> </div>
<br></div> </div>
<br>_______________________________________________
x264-devel mailing list
x264-devel@videolan.org
https://mailman.videolan.org/listinfo/x264-devel</div></div> </div></body>
</html>