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Merge pull request #96 from amiaopensource/ab/head-switching-noise

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command for covering head switching noise resolving #42
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Reto Kromer 2016-09-05 17:24:55 +02:00 committed by GitHub
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</div>
<!-- ends Create ISO -->
<!-- Cover head switching noise -->
<span data-toggle="modal" data-target="#cover_head"><button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="bottom" title="Cover head switching noise">Cover head</button></span>
<div id="cover_head" class="modal fade" tabindex="-1" role="dialog">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="well">
<h3>Cover head switching noise</h3>
<p><code>ffmpeg -i <i>input_file</i> -filter:v drawbox=w=iw:h=7:y=ih-h:t=max <i>output_file</i></code></p>
<p>This command will draw a black box over a small area of the bottom of the frame, which can be used to cover up head switching noise.</p>
<dl>
<dt>ffmpeg</dt><dd>starts the command</dd>
<dt>-i <i>input_file</i></dt><dd>path, name and extension of the input file</dd>
<dt>-filter:v drawbox=</dt>
<dd>This calls the drawtext filter with the following options:
<dl>
<dt>w=in_w</dt><dd>Width is set to the input width. Shorthand for this command would be w=iw</dd>
<dt>h=7</dt><dd>Height is set to 7 pixels.</dd>
<dt>y=ih-h</dt><dd>Y represents the offset, and ih-h sets it to the input height minus the height declared in the previous parameter, setting the box at the bottom of the frame.</dd>
<dt>t=max</dt><dd>T represents the thickness of the drawn box. Default is 3.</dd>
</dl>
</dd>
<dt><i>output_file</i></dt><dd>path and name of the output file</dd>
</dl>
<p class="link"></p>
</div>
</div>
</div>
</div>
<!-- ends Cover head switching noise -->
</div>
<div class="well">
<h4>Preservation</h4>