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<section id="crop-cropabs">
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<h1>Crop/CropAbs<a class="headerlink" href="#crop-cropabs" 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.Crop">
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<span class="sig-prename descclassname"><span class="pre">std.</span></span><span class="sig-name descname"><span class="pre">Crop</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><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">left=0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">right=0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">top=0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">bottom=0</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#std.Crop" title="Permalink to this definition"></a></dt>
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<dt class="sig sig-object py" id="std.CropAbs">
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<span class="sig-prename descclassname"><span class="pre">std.</span></span><span class="sig-name descname"><span class="pre">CropAbs</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">width</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">height</span></span></em><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">left=0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">int</span> <span class="pre">top=0</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#std.CropAbs" title="Permalink to this definition"></a></dt>
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<dd><p>Crops the frames in a clip.</p>
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<p>Crop is the simplest to use of the two. The arguments specify how many
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pixels to crop from each side. This function used to be called CropRel
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which is still an alias for it.</p>
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<p>CropAbs, on the other hand, is special, because it can accept clips with
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variable frame sizes and crop out a fixed size area, thus making it a fixed
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size clip.</p>
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<p>Both functions return an error if the whole picture is cropped away, if the
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cropped area extends beyond the input or if the subsampling restrictions
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aren’t met.</p>
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