Glossary
Searchable terminology from accessibility, web standards, and related fields.
27 results found in video accessibility.
- 360 Video (360-Degree Video, Spherical Video, Omnidirectional Video)
- Video content recorded or rendered to capture a full spherical or panoramic field of view, allowing viewers to look in any direction by turning their head (in a VR headset) or by dragging the view (on…
- AD Guidelines (Audio Description Guidelines, AD Standards)
- Established rules and best practices that govern the creation of audio descriptions for video and live performances. AD guidelines cover aspects such as what to describe (actions, characters, settings…
- AD Personalization (Audio Description Customization, Personalized Audio Description)
- The practice of tailoring audio descriptions to individual user preferences rather than providing a one-size-fits-all narration. Personalization can include varying the level of detail (concise vs. co…
- AD Timing (Audio Description Timing, AD Placement)
- The process of determining when audio descriptions should be inserted into video content. Effective AD timing requires identifying natural pauses in dialogue and significant audio where descriptions c…
- Audio Description (AD, Descriptive Video, Video Description, Described Video)
- A narration track added to video content that describes important visual information for people who are blind or have low vision. Audio descriptions are inserted during natural pauses in dialogue and …
- Audio Description Authoring (AD Authoring, AD Creation, Description Writing)
- The process of writing and producing audio descriptions for video content, live performances, or other visual media. AD authoring involves watching content, identifying key visual elements, writing co…
- Closed Interpreting (Closed Sign Language Interpreting)
- A proposed accessibility feature for video content where a sign language interpreter video can be toggled on or off and displayed alongside the main video, analogous to closed captions for text. Unlik…
- Crowdsourced Captioning (Crowd Captioning, Collaborative Captioning)
- Crowdsourced captioning is an approach to creating video captions or subtitles by distributing the work across multiple contributors rather than relying on a single professional captionist. This metho…
- Description Variation (AD Variation, Alternative Description)
- Multiple versions of audio descriptions for the same video content, each reflecting different stylistic choices, levels of detail, or narrative focuses. Description variations recognize that BLV users…
- Embedded Description (Inline Description, Integrated Description)
- A technique for making presentation content accessible where the speaker verbally describes relevant visual information on slides — including text, images, graphics, and other visual aids — as part of…
- Extended Audio Description (Extended Description)
- A form of audio description in which the video playback is paused to allow time for a description that would not otherwise fit within natural gaps in the audio track. Extended audio descriptions are u…
- Freeze Frame (Video Thumbnail, ASL Freeze Frame)
- In the context of ASL video interfaces, a freeze frame is a static image captured at a recognizable moment of an ASL sign, used as a visual label or thumbnail for video content. Freeze frames allow De…
- Keyframe (Key Frame)
- A keyframe is a single representative frame selected from a video scene or shot that best captures the essential visual content of that segment. In automated audio description and video captioning sys…
- Live Description (Real-Time Description, Live Audio Description)
- The practice of providing descriptions of visual content in real time as events unfold, as opposed to scripted descriptions added during post-production of recorded media. Live description is used in …
- Livestream Accessibility (Live Video Accessibility)
- The practice of making live video broadcasts accessible to people with disabilities, particularly viewers with visual or hearing impairments. Livestreams present unique accessibility challenges becaus…
- Minimum Viable Description (MVD)
- Minimum viable description (MVD) is an emerging framework for audio description that establishes the foundational level of visual information needed to provide equal access to video content without in…
- Narrative Style (Descriptive Style, AD Voice)
- The distinctive approach a describer takes when writing audio descriptions, encompassing choices about language formality, emotional tone, level of interpretation, detail density, and pacing. Narrativ…
- On-Screen Text (OST, Visual Text, Burned-In Text)
- Text that appears visually within video content, including titles, subtitles, captions, signs, labels, credits, and any other written information displayed on screen. On-screen text must be read aloud…
- Open Captions (Burned-in Captions, Hard-coded Captions)
- Captions that are permanently embedded into a video and cannot be turned off by the viewer. Unlike closed captions, which can be toggled on or off, open captions are always visible as part of the vide…
- Picture-in-Picture (PiP, PIP)
- A display technique that shows a smaller video or content window overlaid on the main content, allowing viewers to see two sources simultaneously. In accessibility contexts, picture-in-picture is the …