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  65   <div class="section" id="decklink-faq">
  66 <h1>Decklink FAQ<a class="headerlink" href="#decklink-faq" title="Permalink to this headline">¶</a></h1>
  67 <div class="section" id="i-can-t-get-both-input-and-output-to-work-on-my-decklink-card">
  68 <h2>I can&#8217;t get both input and output to work on my Decklink card?<a class="headerlink" href="#i-can-t-get-both-input-and-output-to-work-on-my-decklink-card" title="Permalink to this headline">¶</a></h2>
  69 <p>Decklink devices are not duplex and only supports either input or output, not both.</p>
  70 </div>
  71 <div class="section" id="how-can-i-get-external-key-using-decklink-quad">
  72 <h2>How can I get external key using Decklink Quad?<a class="headerlink" href="#how-can-i-get-external-key-using-decklink-quad" title="Permalink to this headline">¶</a></h2>
  73 <p>Decklink Quad does not have native support for external-key. However, you can configure CasparCG
  74 to use one of the four available devices as a key output using the &#8220;key-only&#8221; option.</p>
  75 <div class="highlight-python"><pre>&lt;consumer&gt;
  76     &lt;decklink&gt;
  77         &lt;device&gt;1&lt;/device&gt;
  78     &lt;/decklink&gt;
  79     &lt;decklink&gt;
  80         &lt;device&gt;2&lt;/device&gt;
  81         &lt;key-only&gt;true&lt;/key-only&gt;
  82     &lt;/decklink&gt;
  83 &lt;/consumers&gt;</pre>
  84 </div>
  85 </div>
  86 <div class="section" id="what-decklink-cards-support-external-and-internal-key">
  87 <h2>What Decklink cards support external and internal key?<a class="headerlink" href="#what-decklink-cards-support-external-and-internal-key" title="Permalink to this headline">¶</a></h2>
  88 <table border="1" class="docutils">
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  92 <col width="21%" />
  93 <col width="13%" />
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  95 <thead valign="bottom">
  96 <tr class="row-odd"><th class="head">Device</th>
  97 <th class="head">Internal</th>
  98 <th class="head">External</th>
  99 <th class="head">HD</th>
 100 </tr>
 101 </thead>
 102 <tbody valign="top">
 103 <tr class="row-even"><td>Intensity Pro</td>
 104 <td>no</td>
 105 <td>no</td>
 106 <td>no</td>
 107 </tr>
 108 <tr class="row-odd"><td>Intensity Shuttle</td>
 109 <td>yes</td>
 110 <td>no</td>
 111 <td>no</td>
 112 </tr>
 113 <tr class="row-even"><td>Decklink SDI</td>
 114 <td>yes</td>
 115 <td>no</td>
 116 <td>no</td>
 117 </tr>
 118 <tr class="row-odd"><td>Decklink Duo</td>
 119 <td>yes</td>
 120 <td>no</td>
 121 <td>no</td>
 122 </tr>
 123 <tr class="row-even"><td>Decklink Studio</td>
 124 <td>yes</td>
 125 <td>yes</td>
 126 <td>no</td>
 127 </tr>
 128 <tr class="row-odd"><td>Ultra Studio Pro</td>
 129 <td>yes</td>
 130 <td>yes</td>
 131 <td>no</td>
 132 </tr>
 133 <tr class="row-even"><td>Decklink HD Extreme</td>
 134 <td>yes</td>
 135 <td>yes</td>
 136 <td>yes</td>
 137 </tr>
 138 <tr class="row-odd"><td>Multibridge Pro</td>
 139 <td>yes</td>
 140 <td>yes</td>
 141 <td>yes</td>
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 156 <li><a class="reference internal" href="#">Decklink FAQ</a><ul>
 157 <li><a class="reference internal" href="#i-can-t-get-both-input-and-output-to-work-on-my-decklink-card">I can&#8217;t get both input and output to work on my Decklink card?</a></li>
 158 <li><a class="reference internal" href="#how-can-i-get-external-key-using-decklink-quad">How can I get external key using Decklink Quad?</a></li>
 159 <li><a class="reference internal" href="#what-decklink-cards-support-external-and-internal-key">What Decklink cards support external and internal key?</a></li>
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