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Merge pull request #215 from amiaopensource/ydif-scene-detection

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adds ffprobe command for csv of timecode/ydif #213
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Ashley 2017-08-07 13:11:35 -04:00 committed by GitHub
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@ -2239,6 +2239,31 @@ e.g.: <code>ffmpeg -f concat -safe 0 -i mylist.txt -c copy <i>output_file</i></c
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<!-- Scene Detection using YDIF -->
<span data-toggle="modal" data-target="#csv-ydif"><button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="bottom" title="Exports CSV for scene detection using YDIF">CSV with timecodes and YDIF</button></span>
<div id="csv-ydif" class="modal fade" tabindex="-1" role="dialog">
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<h3>Exports CSV for scene detection using YDIF</h3>
<p><code>ffprobe -f lavfi -i movie=<i>input_file</i>,signalstats -show_entries frame=pkt_pts_time:frame_tags=lavfi.signalstats.YDIF -of csv</code></p>
<p>This ffprobe command prints a CSV correlating timestamps and their YDIF values, useful for determining cuts.</p>
<dl>
<dt>ffprobe</dt><dd>starts the command</dd>
<dt>-f lavfi</dt><dd>uses the <a href="http://ffmpeg.org/ffmpeg-devices.html#lavfi" target="_blank">Libavfilter input virtual device</a> as chosen format</dd>
<dt>-i movie=<i>input file</i></dt><dd>path, name and extension of the input video file</dd>
<dt>,</dt><dd>comma signifies closing of video source assertion and ready for filter assertion</dd>
<dt>signalstats</dt><dd>tells ffprobe to use the signalstats command</dd>
<dt>-show_entries</dt><dd>sets list of entries to show per column, determined on the next line</dd>
<dt>frame=pkt_pts_time:frame_tags=lavfi.signalstats.YDIF</dt><dd>specifies showing the timecode (<code>pkt_pts_time</code>) in the frame stream and the YDIF section of the frame_tags stream</dd>
<dt>-of csv</dt><dd>sets the output printing format to CSV. <code>-of</code> is an alias of <code>-print_format</code>.</dd>
</dl>
<p class="link"></p>
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<!-- ends sample Scene Detection using YDIF -->
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