Checkpoint 7.1.3 Preservation of Captioning

Where ICT transmits, converts or records video with synchronized audio, it shall preserve caption data such that it can be displayed in a manner consistent with clauses 7.1.1 and 7.1.2.

Rationale

The European standard specifies requirements for caption processing technologies. These need only be addressed for software applications that are media players or contain embedded players. Other applications should mark this N/A (not applicable).

Additional presentational aspects of the text such as screen position, text colours, text style and text fonts may convey meaning, based on regional conventions. Altering these presentational aspects could change the meaning and should be avoided wherever possible.

Refer to Requirement 7.1.3: Preservation of captioning for more information (external link to EN 301 549 toolkit).

Note: Several “Time-based Media” Success Criteria in WCAG 2.0, such as 1.2.2 Captions (Prerecorded), require that captions are provided. Those stipulate that when creating content, the author must ensure audio content has been transcribed and is captured in a format that can be used to provide synchronized captions. Those requirements, covering the content of the captions, are complementary to chapter 7 of EN 301 594, which covers the actual process of displaying closed captions during playback, provided by the media player.

Note for IBM Teams: The IBM compliance reporting system will be able to convey compliance status with European EN 301 549/Mandate 376: Accessibility requirements suitable for public procurement of ICT products and services in Europe. Revised Section 508 checkpoints cover most of the EN 301 549 requirements. However, this is one of several additional checkpoints that will need to be completed to fully report compliance with the European standard.

Development Techniques

Note: Review the General techniques as well as other tabs applicable to your technology.  Prioritize the use of technology-specific techniques, and implement the General techniques as needed. You are always required to find, understand and implement accessible code techniques to meet the checkpoint. The documented techniques and supplements are not exhaustive; they illustrate acceptable ways to achieve the spirit of the checkpoint. If numbered, techniques are in order of preference, with recommended techniques listed first.

General techniques

There are currently no related techniques.

Mobile Native (iOS) techniques

There are no specific Mobile Native techniques for this checkpoint. Refer to the General techniques section.

Eclipse techniques

There are no specific Eclipse techniques for this checkpoint. Refer to the General techniques section.

Windows-based (MSAA+IA2) techniques

There are no specific Windows-based (MSAA+IA2) techniques for this checkpoint. Refer to the General techniques section.


Most links in this checklist reside outside ibm.com at the Web Content Accessibility Guidelines (WCAG) 2.0. W3C Recommendation 11 December 2008: http://www.w3.org/TR/WCAG20/

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