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<li class="toctree-l3 current"><a class="current reference internal" href="#">SetFieldBased</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="#std.SetFieldBased"><code class="docutils literal notranslate"><span class="pre">SetFieldBased()</span></code></a></li>
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<section id="setfieldbased">
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<h1>SetFieldBased<a class="headerlink" href="#setfieldbased" title="Permalink to this heading"></a></h1>
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<dl class="py function">
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<dt class="sig sig-object py" id="std.SetFieldBased">
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<span class="sig-prename descclassname"><span class="pre">std.</span></span><span class="sig-name descname"><span class="pre">SetFieldBased</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">vnode</span> <span class="pre">clip</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">value</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#std.SetFieldBased" title="Permalink to this definition"></a></dt>
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<dd><p>This is a convenience function. See <em>SetFrameProps</em> if you want to
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set other properties.</p>
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<p>SetFieldBased sets <code class="docutils literal notranslate"><span class="pre">_FieldBased</span></code> to <em>value</em> and deletes
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the <code class="docutils literal notranslate"><span class="pre">_Field</span></code> frame property. The possible values are:</p>
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<blockquote>
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<div><p>0 = Frame Based</p>
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<p>1 = Bottom Field First</p>
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<p>2 = Top Field First</p>
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</div></blockquote>
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<p>For example, if you have source material that’s progressive but has
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been encoded as interlaced you can set it to be treated as frame based
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(not interlaced) to improve resizing quality:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">clip</span> <span class="o">=</span> <span class="n">core</span><span class="o">.</span><span class="n">bs</span><span class="o">.</span><span class="n">VideoSource</span><span class="p">(</span><span class="s2">"rule6.mkv"</span><span class="p">)</span>
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<span class="n">clip</span> <span class="o">=</span> <span class="n">core</span><span class="o">.</span><span class="n">std</span><span class="o">.</span><span class="n">SetFieldBased</span><span class="p">(</span><span class="n">clip</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
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<span class="n">clip</span> <span class="o">=</span> <span class="n">clip</span><span class="o">.</span><span class="n">resize</span><span class="o">.</span><span class="n">Bilinear</span><span class="p">(</span><span class="n">clip</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">320</span><span class="p">,</span> <span class="n">height</span><span class="o">=</span><span class="mi">240</span><span class="p">)</span>
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</pre></div>
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