<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Most VJs use something very lightly compressed, and use a spatial only compressor, non temporal codec (some call these editing vs delivery codecs or intra vs interframe encoding). This makes it easier to seek to a frame (scratching and jumping around, etc)<div><br class="webkit-block-placeholder"></div><div>More than likely you will be fine with photojpeg (for progressive) and motion jpeg-b (for interlaced footage) at around 75% quality.</div><div><br class="webkit-block-placeholder"></div><div>Compressions is a tradeoff with bandwidth and cpu time spent decoding.</div><div><br class="webkit-block-placeholder"></div><div>For example</div><div><br class="webkit-block-placeholder"></div><div>Uncompressed 1080i is around 170/sec. Uncompressed Standard Def NTSC around 27MB/s (not including audio streams)</div><div><br class="webkit-block-placeholder"></div><div>Compare to HDV and DV which is 3.6MB/sec more here : <a href="http://www.apple.com/xsan/videoworkflow.html">http://www.apple.com/xsan/videoworkflow.html</a></div><div><br></div><div>Jpeg codecs live in the middle of that realm, depending on your quality setting, framesize and frames per second.</div><div><br class="webkit-block-placeholder"></div><div>If you can sustain the datarates for the number of streams you want the uncompressed will always win with ease of CPU decoding, at the expense of being NASTILY hard on your drives.</div><div><br class="webkit-block-placeholder"></div><div>In other words, Chris was saying, there is no universal answer and you will have to do some testing.</div><div><br class="webkit-block-placeholder"></div><div><br><div><div>On Jul 29, 2007, at 11:36 PM, yonsei wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; ">Hi, <br class="Apple-interchange-newline"></span> </div><div>I see. </div><div>I am running powerbook G4 1.67 with OS 10.4.10</div><div>thank you</div><div><br class="khtml-block-placeholder"></div><div>Baruch</div><br><div><div>On Jul 30, 2007, at 2:03 AM, chris clepper wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">The answer depends a lot on your OS and hardware.<br><br><div><span class="gmail_quote">On 7/29/07, <b class="gmail_sendername">yonsei</b> <<a href="mailto:gottlieb@yonsei.ac.kr">gottlieb@yonsei.ac.kr</a>> wrote:</span> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div style=""><div>Hi,</div><div><br></div><div>Is there a 'native' container or codec for [pix_film], in terms of minimizing cpu load in rendering to gemwin? </div><div><br></div><div>I guess qt mov would be the preferred container, but is there anything better? What about codecs? I have gotten about 33% less load (than photojpeg) by using uncompressed qt, but is there anything better? </div><div><br></div><div>thanks!</div><div><br></div><div>Baruch </div><br><div><span style="border-collapse: separate; border-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;"> <br></span> </div><br></div><br>_______________________________________________<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:PD-list@iem.at">PD-list@iem.at</a> mailing list<br>UNSUBSCRIBE and account-management -> <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://lists.puredata.info/listinfo/pd-list" target="_blank">http://lists.puredata.info/listinfo/pd-list</a><br><br></blockquote></div><br></blockquote></div><br><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="mailto:PD-list@iem.at">PD-list@iem.at</a> mailing list</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">UNSUBSCRIBE and account-management -> <a href="http://lists.puredata.info/listinfo/pd-list">http://lists.puredata.info/listinfo/pd-list</a></div> </blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font class="Apple-style-span" color="#B51C1C" size="2"><span class="Apple-style-span" style="font-size: 10px;; color: rgb(181, 28, 28); "><b style="color: rgb(181, 28, 28); font-size: 10px; font-weight: bold; "><span class="Apple-style-span" style="color: rgb(181, 28, 28); font-size: 10px; font-weight: bold; ">v a d e //</span></b></span></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 10px/normal Helvetica; min-height: 12px; ; font-size: 10px; "><font class="Apple-style-span" color="#7F7F7F"><br style="color: rgb(127, 127, 127); font-size: 10px; "></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font class="Apple-style-span" color="#7F7F7F" size="2"><span class="Apple-style-span" style="font-size: 10px;; color: rgb(127, 127, 127); "><b style="color: rgb(127, 127, 127); font-size: 10px; font-weight: bold; "><span class="Apple-style-span" style="color: rgb(127, 127, 127); font-size: 10px; font-weight: bold; ">www.vade.info</span></b></span></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font class="Apple-style-span" color="#7F7F7F" size="2"><span class="Apple-style-span" style="font-size: 10px;; color: rgb(127, 127, 127); "><b style="color: rgb(127, 127, 127); font-size: 10px; font-weight: bold; "><span class="Apple-style-span" style="color: rgb(127, 127, 127); font-size: 10px; font-weight: bold; ">abstrakt.vade.info</span></b></span></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span> </div><br></div></body></html>