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   5   <title>Petter Reinholdtsen: Software video mixer on a USB stick</title>
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  11   <h1>
  12        <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
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  20   <div class="title">Software video mixer on a USB stick</div>
  21   <div class="date">2008-12-28 15:40</div>
  22   <div class="body">
  23 <p>The <a href="http://www.nuug.no/">Norwegian Unix User Group</a> is
  24 recording our montly presentation on video, and recently we have
  25 worked on improving the quality of the recordings by mixing the slides
  26 directly with the video stream.  For this, we use the
  27 <a href="http://dvswitch.alioth.debian.org/">dvswitch</a> package from
  28 the Debian video team.  As this require quite one computer per video
  29 source, and NUUG do not have enough laptops available, we need to
  30 borrow laptops.  And to avoid having to install extra software on
  31 these borrwed laptops, I have wrapped up all the programs needed on a
  32 bootable USB stick.  The software required is dvswitch with assosiated
  33 source, sink and mixer applications and
  34 <a href="http://www.kinodv.org/">dvgrab</a>.  To allow this setup to
  35 work without any configuration, I've patched dvswitch to use
  36 <a href="http://www.avahi.org/">avahi</a> to connect the various parts
  37 together.  And to allow us to use laptops without firewire plugs, I
  38 upgraded dvgrab to the one from Debian/unstable to get one that work
  39 with USB sources.  We have not yet tested this setup in a production
  40 setup, but I hope it will work properly, and allow us to set up a
  41 video mixer in a very short time frame.  We will need it for
  42 <a href="http://www.goopen.no/">Go Open 2009</a>.</p>
  43
  44 <p><a href="http://www.nuug.no/pub/video/bin/usbstick-dvswitch.img.gz">The
  45 USB image</a> is for a 1 GB memory stick, but can be used on any
  46 larger stick as well.</p>
  47 </div>
  48
  49   <div class="tags">Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.</div>
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