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SM14.html
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<!DOCTYPE html><html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><head><title>Providing sign language interpretation through synchronized video
streams in SMIL 2.0</title><link rel="stylesheet" type="text/css" href="../../css/sources.css" class="remove"></link></head><body><h1>Providing sign language interpretation through synchronized video
streams in SMIL 2.0</h1><section class="meta"><p class="id">ID: SM14</p><p class="technology">Technology: smil</p><p class="type">Type: Technique</p></section><section id="applicability"><h2>When to Use</h2>
<p>SMIL 2.0</p>
</section><section id="description"><h2>Description</h2>
<p>The objective of this technique is to provide a way for people who are deaf
or otherwise have trouble hearing the dialogue in audio visual material to be
able to view the material. With this technique all of the dialogue and
important sounds are available in a sign-language interpretation video that
is displayed in a caption area. </p>
<p> With SMIL 2.0, separate regions can be defined for the two videos. The two
video playbacks are synchronized, with the content video displayed in one
region of the screen, while the corresponding sign-language interpretation
video is displayed in another region. </p>
</section><section id="examples"><h2>Examples</h2>
<section class="example">
<h3>SMIL 2.0 sign-language video sample for RealMedia player</h3>
<pre xml:space="preserve">
<smil xmlns="https://www.w3.org/2001/SMIL20/Language">
<head>
<layout>
<root-layout backgroundColor="black" height="310" width="330"/>
<region id="video" backgroundColor="black" top="5" left="5"
height="240" width="320"/>
<region id="signing" backgroundColor="black" top="250"
height="60" left="5" width="320"/>
</layout>
</head>
<body>
<par>
<video src="salesdemo.mpg" region="video" title="Sales Demo"
alt="Sales Demo"/>
<video src="salesdemo_signing.mpg"
region="signing" systemCaptions="on"
title="sign language interpretation"
alt="Sales Demo Sign Language Interpretation"/>
</par>
</body>
</smil>
</pre>
<p>The example shows a <par> segment containing
two <video> tags. The systemCaptions
attribute indicates that the sign language video should be displayed
when the user's player setting for captions indicates the preference
for captions to be displayed. The <layout>
section defines the regions used for the main video and the sign
language interpretation video. </p>
</section>
</section><section id="tests"><h2>Tests</h2>
<section class="procedure"><h3>Procedure</h3>
<ol>
<li> Enable control in content or player to turn on sign language
interpretation (unless it is always shown) </li>
<li> Play file with sign-language interpretation </li>
<li> Check whether sign language interpretation is displayed </li>
</ol>
</section>
<section class="results"><h3>Expected Results</h3>
<ul>
<li> #3 is true </li>
</ul>
</section>
</section><section id="related"><h2>Related Techniques</h2><ul>
<li><a href="../smil/SM13">SM13</a></li>
</ul></section><section id="resources"><h2>Resources</h2>
<ul>
<li>
<a href="https://www.w3.org/TR/SMIL/">Synchronized Multimedia
Integration Language (SMIL 2.0)</a>
</li>
<li>
<a href="https://www.w3.org/TR/SMIL-access/">Accessibility
Features of SMIL</a>
</li>
<li>
<a href="http://ncam.wgbh.org/invent_build/web_multimedia/accessible-digital-media-guide/guideline-h-multimedia#techH12">NCAM Rich Media Accessibility, Accessible SMIL
Templates</a>
</li>
</ul>
</section></body></html>