ISO/IEC TS 20071-25:2017 addresses user interface component accessibility with a focused guidance on the audio presentation of text in videos, including captions, subtitles and other on-screen text. For teams working on accessible media, technical review, or compliance documentation, it helps frame how text information may be communicated in audio form in a way that supports users who cannot easily rely on visual presentation. As a supporting reference within the ISO/IEC TS 20071 series, it is relevant to accessibility-oriented product evaluation and documented evaluation workflows.

What is ISO/IEC TS 20071-25:2017?

ISO/IEC TS 20071-25:2017 is a technical specification that provides guidance for presenting text in audio form when text appears in video content. Its scope is aligned with accessibility for user interface components, with attention to captions, subtitles, and other on-screen text that may need to be conveyed through sound. In practice, it supports engineering documentation, accessibility design review, and compliance preparation where media presentation methods must be assessed against defined accessibility expectations. As a derived document linked to ISO/IEC TS 20071, it is best used as a supporting technical reference.

Applications of ISO/IEC TS 20071-25:2017

This reference is useful in workflows involving video platforms, learning systems, public information displays, training content, and software or device interfaces that present text within moving images. It may be consulted during technical validation of media accessibility features, especially where captions or subtitles must be evaluated for audible presentation options. Procurement teams, content developers, and laboratories can use ISO/IEC TS 20071-25:2017 as part of a broader technical assessment to improve operational consistency, support accessibility-related requirements, and inform conformity assessment preparation.

Why is ISO/IEC TS 20071-25:2017 important?

The document matters because accessible audio presentation can reduce barriers for users who depend on non-visual access to text appearing in video content. For organizations, that can improve compliance readiness, testing consistency, and quality assurance across media products and digital services. It also supports risk management by giving teams a clearer basis for technical review and engineering validation when implementing accessibility functions. In procurement and specification work, ISO/IEC TS 20071-25:2017 can help define expected behavior and strengthen documentation for technical compliance.

• Guidance for audio presentation of on-screen text in video content
• Relevant to captions, subtitles, and related accessibility features
• Useful in accessibility review, testing workflows, and engineering documentation
• Supports compliance preparation and product evaluation activities