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  <channel>
    <title>SVG Wow!</title>
    <link>http://svg-wow.org/blog</link>
    <description></description>
    <pubDate>Mon, 03 Mar 2014 21:47:48 GMT</pubDate>
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    <item>
      <title>Rotozoom video</title>
      <link>http://svg-wow.org/blog/2011/03/28/rotozoom-video</link>
      <pubDate>Mon, 28 Mar 2011 23:08:00 EDT</pubDate>
      <category><![CDATA[pattern]]></category>
      <category><![CDATA[animation]]></category>
      <category><![CDATA[video]]></category>
      <guid isPermaLink="true">http://svg-wow.org/blog/2011/03/28/rotozoom-video</guid>
      <description>Rotozoom video</description>
      <content:encoded><![CDATA[
<div id="description">
    <p>
        Homage to <a href="http://en.wikipedia.org/wiki/Future_Crew">Future Crew's</a> 
        <em><a href="http://en.wikipedia.org/wiki/Second_reality">Second Reality</a></em> 
        [<a href="http://www.youtube.com/watch?v=XtCW-axRJV8#t=4m24s">youtube</a>] rotozoomer effect.
    </p>
    <p>
        The music was composed by <a href="http://en.wikipedia.org/wiki/Peter_Hajba">Skaven</a> and 
        <a href="http://en.wikipedia.org/wiki/Jonne_Valtonen">Purple Motion</a> and is from the <a href="http://en.wikipedia.org/wiki/Second_reality">original demo</a>.
    </p>
    <p>
        The demo uses svg patterns and in particular the 
        <a href="http://www.w3.org/TR/SVG11/pservers.html#PatternElementPatternTransformAttribute">patternTransform</a> 
        attribute to create the rotozoom effect.
        It's based on <a href="http://mrdoob.com/lab/javascript/effects/rotozoomer/00/">this demo</a> with kind permission 
        from <a href="http://mrdoob.com">mr doob</a>.
    </p>
    <p>
        The video is old archive footage showing <a href="http://en.wikiquote.org/wiki/William_Henry_Purnell_Blandy">Vice Admiral William H.P. Blandy</a>
        giving a speech before the Bikini nuclear test. A transcription of this videoclip:
    </p>
    <q>
      The bomb will not start a chain-reaction in the water converting it all to gas and letting all 
      the ships on all the oceans drop down to the bottom. It will not blow out the bottom of the sea 
      and let all the water run down the hole. It will not destroy gravity. I am not an atomic playboy, 
      as one of my critics labeled me, exploding these bombs to satisfy my personal whim.
    </q>
    <p>
        This particular video is used since the original demo had a sample with the phrase <q>I am not an atomic playboy</q>.
    </p>
    <p>
        To play the video inside the svg pattern, an attempt is made to use the svg 
        <a href="http://www.w3.org/TR/SVGTiny12/multimedia.html#VideoElement">'video'</a> 
        element, and if that's not supported the fallback is rendering video to a html5 
        <a href="http://dev.w3.org/html5/spec/Overview.html#the-canvas-element">'canvas'</a> and inserting
        the rasterized movie frames into the svg pattern as a normal image. Technically a <a href="http://www.w3.org/TR/SVG11/extend.html#ForeignObjectElement">'foreignObject'</a>
        element with html5 <a href="http://www.w3.org/TR/SVGTiny12/multimedia.html#VideoElement">'video'</a> 
        could also have been used, however no browser was capable of displaying 
        <a href="http://www.w3.org/TR/SVG11/extend.html#ForeignObjectElement">'foreignObject'</a> elements inside a 
        pattern at the time of writing this demo (just before the SVG Open 2010 conference).
    </p>
    <p>
        The music uses the html5 <a href="http://dev.w3.org/html5/spec/Overview.html#the-canvas-element">'audio'</a> element, 
        providing three levels of fallback, first in the original <a href="http://en.wikipedia.org/wiki/ScreamTracker">ScreamTracker</a> format, 
        then as Ogg Vorbis, and as a last option as MP3. The video is also provided in three formats (webm/vp8, mp4/x264, ogg/theora), for wider compatibility.
    </p>
</div>
]]></content:encoded>
    </item>
    <item>
      <title>Video Overlay</title>
      <link>http://svg-wow.org/blog/2009/10/04/video-overlay</link>
      <pubDate>Sun, 04 Oct 2009 15:00:00 EDT</pubDate>
      <category><![CDATA[animation]]></category>
      <category><![CDATA[video]]></category>
      <category><![CDATA[filters]]></category>
      <guid isPermaLink="true">http://svg-wow.org/blog/2009/10/04/video-overlay</guid>
      <description>Video Overlay</description>
      <content:encoded><![CDATA[
<div id="description">
  <p>
      This example illustrates the use of the following features:
  </p>
  <ul>
      <li>
          SVG Tiny 1.2 <span class="code">&lt;video&gt;</span> and using SVG DOM interfaces for play and pause
      </li>
      <li>
          SVG declarative animations (SMIL)
      </li>
      <li>
          external SVG resource files
      </li>
      <li>
          SVG filters
      </li>
  </ul>
  <p>See <a href="/attributions.html">attributions</a> about
      the resources used in this demo.
  </p>
</div>
]]></content:encoded>
    </item>
    <item>
      <title>Video</title>
      <link>http://svg-wow.org/blog/2009/10/04/video</link>
      <pubDate>Sun, 04 Oct 2009 15:00:00 EDT</pubDate>
      <category><![CDATA[css3]]></category>
      <category><![CDATA[video]]></category>
      <category><![CDATA[webfonts]]></category>
      <category><![CDATA[html5]]></category>
      <category><![CDATA[clip]]></category>
      <guid isPermaLink="true">http://svg-wow.org/blog/2009/10/04/video</guid>
      <description>Video</description>
      <content:encoded><![CDATA[
<div id="description">
  <p>
      This example illustrates the use of the following features:
  </p>
  <ul>
      <li>
          SVG Tiny 1.2 <span class="code">&lt;video&gt;</span>
      </li>
      <li>
          SVG 1.1 circular clipping on playing video
      </li>
      <li>
          external SVG resource files
      </li>
      <li>
          HTML5 video
      </li>
      <li>
          SVG used as a CSS 'background-image'
      </li>
      <li>
          CSS3 media-queries for adapting to different windowsize
      </li>
      <li>
          CSS3 webfonts
      </li>
  </ul>
  <p>See <a href="/attributions.html">attributions</a> about
      the resources used in this demo.
  </p>
</div>
]]></content:encoded>
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