Guide to Guideline 1.2 Level 3 Success Criterion 1

Intent of this success criterion

The intent of this success criterion is to enable people who are deaf or hard of hearing and who are fluent in sign language to watch multimedia presentations. Many people find it easier to following sign language than to read the text of captions.

Techniques for addressing 1.2 L3 SC1

The following combinations of techniques are deemed to be sufficient by the WCAG Working Group for meeting success criterion 1.2 L3 SC1.

Using a technology-specific technique to create a sign language interpretation track AND @@ do we need additional guidelines on how to create a good sign language interpretation?

Sign Language Interpretation in SMIL 1.0

Create a sign language video with a system-captions test attribute

Video with sign language area.

<smil xmlns="http://www.w3.org/TR/REC-smil>

<head>
   <layout>
     <root-layout background-color="black" height="330" width="320"/>
     <region id="video" background-color="black" top="26" left="0" height="144" width="320"/>
     <region id="signing" background-color="black" top="186" height="144" width="320" left="0" width="320">
   </layout>
</head>

<body>	
   <par>
   	<video src="signing.rm" region="signing" system-captions="on" title="signing"/>
   	<video src="movie.rm" begin="00:00.0" region="video" title="video"/>
   </par>	  
</body>

</smil>

Sign Language Interpretation in SMIL 2.0

Create a sign language video with a systemCaptions test attribute

Video with sign language area.

<smil xmlns="//www.w3.org/2001/SMIL20/Language>

<head>
   <layout>
     <root-layout background-color="black" height="330" width="320"/>
     <region id="video" backgroundColor="black" top="26" left="0" height="144" width="320"/>
     <region id="signing" backgroundColor="black" top="186" height="144" width="320" left="0" width="320">
   </layout>
</head>

<body>	
   <par>
   	<video src="signing.rm" region="signing" systemCaptions="on" title="signing"/>
   	<video src="movie.rm" begin="00:00.0" region="video" title="video"/>
   </par>	  
</body>

</smil>

Common Failures Identified by the Working Group

The following are common mistakes which are considered failures of this success criterion by the working group.

Optional Techniques (Advisory) for 1.2 L3 SC1

Although not required for conformance, the following additional techniques should be considered in order to make content more accessible. Not all techniques can be used or would be effective in all situations.

Guide to Guideline 1.2 Level 3 Success Criterion 1

Key terms and important concepts

Intent of this success criterion

Techniques for addressing 1.2 L3 SC1

Technology-Specific Techniques for 1.2 L3 SC1

Sign Language Interpretation in SMIL 1.0

Sign Language Interpretation in SMIL 2.0

Common Failures Identified by the Working Group

Optional Techniques (Advisory) for 1.2 L3 SC1

Additional Technology-Independent Techniques (Advisory)

Benefits: How 1.2 L3 SC1 helps people with disabilities

Examples of 1.2 L3 SC1

Related resources