<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>On 16-Feb-08, at 5:33 AM, janaka priyadarshana wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><b>If the above is true.....(</b>theora use YUV color space<b>)</b></blockquote><div><br class="webkit-block-placeholder"></div><div>Yes, Theora always encodes video in a YUV colour space.</div><br><blockquote type="cite">it is possible that get a gray scale video output by just considering only the Y component of the video (ignore the U and V components)</blockquote><div><br class="webkit-block-placeholder"></div><div>Using just the Y plane is a reasonable way to convert a YUV image to a monochrome one.</div><div><br class="webkit-block-placeholder"></div><div> -r</div></div><br></body></html>