153 lines
7.2 KiB
HTML
153 lines
7.2 KiB
HTML
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<!DOCTYPE html>
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>DASH options — Shaka Packager documentation</title>
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<div class="section" id="dash-options">
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<h1>DASH options<a class="headerlink" href="#dash-options" title="Permalink to this headline">¶</a></h1>
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<dl class="option-list">
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<dt><kbd><span class="option">--generate_static_live_mpd</span></kbd></dt>
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<dd><p>If enabled, generates static mpd. If segment_template is specified in
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stream descriptors, shaka-packager generates dynamic mpd by default; if
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this flag is enabled, shaka-packager generates static mpd instead. Note
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that if segment_template is not specified, shaka-packager always generates
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static mpd regardless of the value of this flag.</p>
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</dd>
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<dt><kbd><span class="option">--mpd_output <var><file_path></var></span></kbd></dt>
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<dd><p>MPD output file name.</p>
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</dd>
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<dt><kbd><span class="option">--base_urls <var><comma_separated_urls></var></span></kbd></dt>
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<dd><dl class="simple">
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<dt>Comma separated BaseURLs for the MPD:</dt><dd><p><strong><url>[,<url>]…</strong>.</p>
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</dd>
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</dl>
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<p>The values will be added as <BaseURL> element(s) immediately under the <MPD>
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element.</p>
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</dd>
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<dt><kbd><span class="option">--min_buffer_time <var><seconds></var></span></kbd></dt>
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<dd><p>Specifies, in seconds, a common duration used in the definition of the MPD
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Representation data rate.</p>
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</dd>
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<dt><kbd><span class="option">--minimum_update_period <var><seconds></var></span></kbd></dt>
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<dd><p>Indicates to the player how often to refresh the media presentation
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description in seconds. This value is used for dynamic MPD only.</p>
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</dd>
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<dt><kbd><span class="option">--suggested_presentation_delay <var><seconds></var></span></kbd></dt>
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<dd><p>Specifies a delay, in seconds, to be added to the media presentation time.
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This value is used for dynamic MPD only.</p>
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</dd>
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<dt><kbd><span class="option">--time_shift_buffer_depth <var><seconds></var></span></kbd></dt>
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<dd><p>Guaranteed duration of the time shifting buffer for dynamic media
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presentations, in seconds.</p>
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</dd>
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<dt><kbd><span class="option">--preserved_segments_outside_live_window <var><num_segments></var></span></kbd></dt>
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<dd><p>Segments outside the live window (defined by <cite>time_shift_buffer_depth</cite>
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above) are automatically removed except for the most recent X segments
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defined by this parameter. This is needed to accommodate latencies in
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various stages of content serving pipeline, so that the segments stay
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accessible as they may still be accessed by the player.</p>
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<p>The segments are not removed if the value is zero.</p>
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</dd>
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<dt><kbd><span class="option">--utc_timings <var><scheme_id_uri_value_pairs></var></span></kbd></dt>
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<dd><dl class="simple">
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<dt>Comma separated UTCTiming schemeIdUri and value pairs for the MPD:</dt><dd><p><strong><scheme_id_uri>=<value>[,<scheme_id_uri>=<value>]…</strong></p>
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</dd>
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</dl>
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<p>This value is used for dynamic MPD only.</p>
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</dd>
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<dt><kbd><span class="option">--default_language <var><language></var></span></kbd></dt>
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<dd><p>Any audio/text tracks tagged with this language will have
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<Role … value=”main” /> in the manifest. This allows the player to
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choose the correct default language for the content.</p>
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<p>This applies to both audio and text tracks. The default language for text
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tracks can be overriden by ‘default_text_language’.</p>
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</dd>
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<dt><kbd><span class="option">--default_text_language <var><text_language></var></span></kbd></dt>
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<dd><p>Same as above, but this applies to text tracks only, and overrides the
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default language for text tracks.</p>
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</dd>
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<dt><kbd><span class="option">--allow_approximate_segment_timeline</span></kbd></dt>
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<dd><p>For live profile only.</p>
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<p>If enabled, segments with close duration (i.e. with difference less than
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one sample) are considered to have the same duration. This enables
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MPD generator to generate less SegmentTimeline entries. If all segments
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are of the same duration except the last one, we will do further
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optimization to use <a class="reference external" href="mailto:SegmentTemplate%40duration">SegmentTemplate<span>@</span>duration</a> instead and omit
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SegmentTimeline completely.</p>
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<p>Ignored if $Time$ is used in segment template, since $Time$ requires
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accurate Segment Timeline.</p>
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</dd>
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</dl>
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</div>
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</div>
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</div>
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</div>
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<div class="clearer"></div>
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</div>
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<div class="related" role="navigation" aria-label="related navigation">
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<h3>Navigation</h3>
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<ul>
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<li class="right" style="margin-right: 10px">
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<a href="../genindex.html" title="General Index"
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>index</a></li>
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<li class="nav-item nav-item-0"><a href="../index.html">Shaka Packager documentation</a> »</li>
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</ul>
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