<divclass="fragment"><divclass="line"><aname="l00001"></a><spanclass="lineno"> 1</span> <spanclass="comment">// Copyright 2018 Google Inc. All rights reserved.</span></div>
<divclass="line"><aname="l00003"></a><spanclass="lineno"> 3</span> <spanclass="comment">// Use of this source code is governed by a BSD-style</span></div>
<divclass="line"><aname="l00004"></a><spanclass="lineno"> 4</span> <spanclass="comment">// license that can be found in the LICENSE file or at</span></div>
<divclass="line"><aname="l00011"></a><spanclass="lineno"> 11</span> <spanclass="stringliteral">"Guaranteed duration of the time shifting buffer for HLS LIVE "</span></div>
<divclass="line"><aname="l00012"></a><spanclass="lineno"> 12</span> <spanclass="stringliteral">"playlists and DASH dynamic media presentations, in seconds."</span>);</div>
<divclass="line"><aname="l00016"></a><spanclass="lineno"> 16</span> <spanclass="stringliteral">"Segments outside the live window (defined by '--time_shift_buffer_depth') "</span></div>
<divclass="line"><aname="l00017"></a><spanclass="lineno"> 17</span> <spanclass="stringliteral">"are automatically removed except for the most recent X segments defined "</span></div>
<divclass="line"><aname="l00018"></a><spanclass="lineno"> 18</span> <spanclass="stringliteral">"by this parameter. This is needed to accommodate latencies in various "</span></div>
<divclass="line"><aname="l00019"></a><spanclass="lineno"> 19</span> <spanclass="stringliteral">"stages of content serving pipeline, so that the segments stay accessible "</span></div>
<divclass="line"><aname="l00020"></a><spanclass="lineno"> 20</span> <spanclass="stringliteral">"as they may still be accessed by the player."</span></div>
<divclass="line"><aname="l00021"></a><spanclass="lineno"> 21</span> <spanclass="stringliteral">"The segments are not removed if the value is zero."</span>);</div>
<divclass="line"><aname="l00024"></a><spanclass="lineno"> 24</span> <spanclass="stringliteral">"For DASH, any audio/text tracks tagged with this language will "</span></div>
<divclass="line"><aname="l00025"></a><spanclass="lineno"> 25</span> <spanclass="stringliteral">"have <Role ... value=\"main\" /> in the manifest; For HLS, the "</span></div>
<divclass="line"><aname="l00026"></a><spanclass="lineno"> 26</span> <spanclass="stringliteral">"first audio/text rendition in a group tagged with this language "</span></div>
<divclass="line"><aname="l00027"></a><spanclass="lineno"> 27</span> <spanclass="stringliteral">"will have 'DEFAULT' attribute set to 'YES'. This allows the "</span></div>
<divclass="line"><aname="l00028"></a><spanclass="lineno"> 28</span> <spanclass="stringliteral">"player to choose the correct default language for the content."</span></div>
<divclass="line"><aname="l00029"></a><spanclass="lineno"> 29</span> <spanclass="stringliteral">"This applies to both audio and text tracks. The default "</span></div>
<divclass="line"><aname="l00030"></a><spanclass="lineno"> 30</span> <spanclass="stringliteral">"language for text tracks can be overriden by "</span></div>
<divclass="line"><aname="l00034"></a><spanclass="lineno"> 34</span> <spanclass="stringliteral">"Same as above, but this applies to text tracks only, and "</span></div>
<divclass="line"><aname="l00035"></a><spanclass="lineno"> 35</span> <spanclass="stringliteral">"overrides the default language for text tracks."</span>);</div>