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Merge pull request #217 from amiaopensource/phase-shift

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adds audio phase shift command #195
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Ashley 2017-08-07 13:46:06 -04:00 committed by GitHub
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@ -1110,6 +1110,30 @@
<div class="well">
<h4>Normalize/Equalize Audio</h4>
<!-- phase shift -->
<span data-toggle="modal" data-target="#phase_shift"><button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="bottom" title="Inverses the audio phase of the second channel">Flip phase shift</button></span>
<div id="phase_shift" class="modal fade" tabindex="-1" role="dialog">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="well">
<h3>Flip audio phase shift</h3>
<p><code>ffmpeg -i <i>input_file</i> -af pan="stereo|c0=c0|c1=-1*c1" <i>output_file</i></code></p>
<p>This command inverses the audio phase of the second channel by rotating it 180°.</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>-af</dt><dd>specifies that the next section should be interpreted as an audio filter</dd>
<dt>pan=<dt><dd>tell the quoted text below to use the <a href="https://ffmpeg.org/ffmpeg-filters.html#pan-1" target="_blank">pan filter</a></dd>
<dt>"stereo|c0=c0|c1=-1*c1"</dt><dd>maps the output's first channel (c0) to the input's first channel and the output's second channel (c1) to the inverse of the input's second channel</dd>
<dt><i>output file</i></dt><dd>path, name and extension of the output file</dd>
</dl>
<p class="link"></p>
</div>
</div>
</div>
</div>
<!-- ends phase shift -->
<!-- loudnorm metadata -->
<span data-toggle="modal" data-target="#loudnorm_metadata"><button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="bottom" title="Calculate Loudness Levels">Calculate Loudness Levels</button></span>
<div id="loudnorm_metadata" class="modal fade" tabindex="-1" role="dialog">