Hi I wasnt subscribed to the list when I sent this so just in case I'm sending it again:<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Giancarlo Rivas</b> <<a href="mailto:giaym.mail@gmail.com">giaym.mail@gmail.com</a>><br>
Date: Tue, Mar 25, 2008 at 4:37 AM<br>Subject: Megui's x264 rev785 trailing noise artifact<br>To: <a href="mailto:x264-devel@videolan.org">x264-devel@videolan.org</a><br><br><br>Hello, I see the latest version is 791 but using Megu's autoupdate (which brings v.785) I encoded a videogame raw video with the CQ-Lossless profile (Constant Quality quantizer 1).<br>
<br>The result had glaringly obvious noise which trails when the screen (videogame's) moves which the raw does not have.<br>
<br>I uploaded samples:<br>raw source (huffyuff): <a href="http://www.mediafire.com/?ahvq20190zn" target="_blank">http://www.mediafire.com/?ahvq20190zn</a><br>encoded: <a href="http://www.mediafire.com/?pymgazelh5z" target="_blank">http://www.mediafire.com/?pymgazelh5z</a><br>
<br><br>I got word huffyuv somehow is buggy so after recompressing the raw to RGB the result had much less of the artifact but it was still present. With 2-pass vbr set to 1000 bitrate it was not present (HQ-Fast profile on Megui).<br>
<br>The sample I uploaded turns a lot better by recompressing the source to rgb, if you want a clip that doesn't turn _that_ good (still better) just ask :)<br><br>I recompressed many times changing options but my computer is a single core 800mhz so I have officially given up on this empiric approach, I'm encoding with 791 though to check it has not been "fixed" already.<br>
</div><br><br>Yes, latest version also has the issue.<br><br>This is another raw clip
where it's easy to notice the artifact once encoded, it is already
onverted to rgb, but it has the same issue as huffyuv:<br><br><a href="http://www.mediafire.com/?wtpy2b5jzox" target="_blank">http://www.mediafire.com/?wtpy2b5jzox</a>