<div dir="ltr">They are. <br>encoder.c:x264_validate_parameters<br>if( b_open && i_csp >= X264_CSP_I444 && i_csp < X264_CSP_BGR && h->param.analyse.b_psy )<br> h->param.analyse.i_chroma_qp_offset += 6;<br>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jun 25, 2014 at 11:12 PM, Derek Buitenhuis <span dir="ltr"><<a href="mailto:derek.buitenhuis@gmail.com" target="_blank">derek.buitenhuis@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">On 6/25/2014 3:45 PM, Deepthi Nandakumar wrote:<br>
> In a sense, psy-rd encapsulates all those r-d algorithms/tweaks/hacks that improve visual quality but may hurt objective metrics like psnr/ssim.<br>
> In 444, this qp hack is likely to hurt objective metrics, hence it's turned on only if psychovisual improvement is desired.<br>
<br>
</div>OK.<br>
<br>
Was curious, since these are not lumped in with psy-rd in x264.<br>
<div class="HOEnZb"><div class="h5"><br>
- Derek<br>
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