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Web + Multimedia
Highlighted Project

Guidelines for Accessible Digital Materials: NCAM-created Design Guidelines for Electronic Publications, Multimedia and the Web

Web + Multimedia

Accessible Designs for Personal Health Records

A project to develop and evaluate prototype personal health records and technology-based patient information systems to make them accessible to and usable by people with disabilities.

Accessible Digital Media Guidelines

A publication of the Beyond the Text project.


Caption And Description Editing Tool

NCAM has developed CADET, (Caption and Description Editing Tool). CADET is free, downloadable caption-authoring software that enables anyone to easily produce high-quality caption files that are compatible with any media player that supports the display of captions and any web browser. CADET can also be used to generate audio-description scripts. CADET can caption online or offline media, and does not require users to upload private videos or proprietary content to the internet.

Captioning Solutions for Handheld Media and Mobile Devices

A project to develop technical solutions for delivering captioned content to iPods, cell phones, PDAs and other mobile devices.


TextStreamer, software that solves the problem of providing a single stream of captions for programs that are simultaneously broadcast and streamed online. TextStreamer works with any embedded video player, whether a native browser player or a custom design, and is also optimal for providing closed captions in an embedded video player that does not provide adequate built-in closed-caption support.

Tools & Guidelines

NCAM-created resources for producing accessible multimedia and Web sites.

Using HTML5 and Javascript to Deliver Text-Based Audio Descriptions

IBM and NCAM research into delivering online audio descriptions via text-to-speech (TTS) methods, using HTML5 media elements, Javascript and TTML.

Related Projects

Invent + Build » Analog + Digital TV Index
Access to Emergency Alerts for People with Disabilities

An NCAM-led initiative to enhance the nation’s emergency warning systems to better serve people with sensory disabilities.

Experience + Learn » Media at Home + Work
Accessible Digital Radio Broadcast Services

A grant awarded to National Public Radio (NPR) and the Carl and Ruth Shapiro Family National Center for Accessible Media to research and develop a prototype systems for delivering captions and audio descriptions via HD radio.

Invent + Build » Analog + Digital TV Index
Developer's Guide to Creating Talking Menus for Set-top Boxes and DVDs

Providing an audio interface so blind and visually impaired viewers can operate a set-top box.

Experience + Learn » Educational Media
E-description: Extended and Enhanced Descriptions

The project is based on technology that allows children who are blind or visually impaired to independently access additional information that is embedded within today's visually rich curriculum materials.

Experience + Learn » Educational Media
Effective Practices for Description of Science Content within Digital Talking Books

Recommended practices for audio descriptions of science images within digital talking books (DTBs) for the benefit of users who are blind or have low vision.

Experience + Learn » Media at Home + Work
Media Access Group at WGBH - Creating Captioned and Described Content

NCAM's fellow Access division at WGBH produces captioning and description for every kind of media created (television, feature films, DVD, Web- and mobile device-based).

Experience + Learn » Media at Home + Work
Researching Accessibility Gaps in Transit Hubs Communication Systems and Standards

Researching accessibility gaps within communication technologies used in the transportation industry.

Experience + Learn » Educational Media
Specifications for Accessible Learning Technologies

NCAM staff lead an industry standards process within the IMS Global Learning Consortium that maintains the Access for All metadata and learner information standards, now ISO/IEC Standard 24751.