Glossary
Searchable terminology from accessibility, web standards, and related fields.
20 results found in multimedia.
- 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…
- 360-Degree Video (360 Video, VR360, Spherical Video, Omnidirectional Video)
- Video content recorded or rendered to cover the full 360-degree sphere around the viewer, allowing them to look in any direction during playback. When viewed in a virtual reality headset, 360-degree v…
- Auto-Generated Captions (Automatic Captions, AI Captions, Machine-Generated Captions)
- Captions automatically created by speech recognition technology without human review or editing. Video platforms like YouTube and TikTok offer auto-generated captions as a default accessibility featur…
- Background Blur (Depth of Field Effect, Bokeh Effect)
- A visual technique that applies a blur filter to the background of a video while keeping foreground subjects in sharp focus, similar to a shallow depth-of-field camera effect. In accessibility context…
- Captions (Subtitles, Text Captions)
- Text displayed on screen that represents the audio content of a video, including spoken dialogue and important sound effects. Captions are essential for deaf and hard of hearing viewers but also benef…
- Closed Captions (CC)
- Captions that can be turned on or off by the viewer, as opposed to open captions which are permanently embedded in the video. Closed captions typically include not just dialogue but also descriptions …
- 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…
- Dynamic Caption Tracking (Word-by-Word Highlighting, Synchronized Caption Highlighting)
- A caption display feature that highlights or visually emphasizes the word currently being spoken in the caption text, synchronized with the audio. Dynamic caption tracking helps viewers maintain their…
- Immersive Media (Immersive Content, Immersive Technology)
- Digital content and technologies designed to create a sense of presence and embodiment by surrounding users with stimuli that engage multiple senses. This includes 360-degree video, virtual reality, a…
- 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…
- Multimodal Content (Multi-Modal Media)
- Content that combines multiple forms of media—such as text, images, audio, video, and interactive elements—to convey information. Multimodal content can enhance accessibility by providing multiple pat…
- Playback Speed (Video Speed, Playback Rate)
- The rate at which video or audio content plays relative to its original recording speed. Most video platforms allow users to adjust playback speed, typically from 0.25x to 2x or higher. For viewers wi…
- Time-Based Media (Multimedia Content, Synchronized Media)
- Content that unfolds over time, including audio, video, audio-video combinations, and interactive multimedia presentations. WCAG Guideline 1.2 requires that time-based media be made accessible through…
- Video Accessibility (Accessible Video)
- The practice of making video content usable by people with diverse abilities, including providing captions for deaf and hard of hearing viewers, audio descriptions for blind viewers, transcripts, appr…
- Video Chapters (Chapter Markers, Video Segments, Timestamps)
- Navigational markers within a video that divide content into labeled sections, allowing viewers to jump directly to specific topics or segments. Video chapters function like a table of contents for vi…
- Video Customization (Video Personalization, Adaptive Video)
- The ability for viewers to modify the visual and auditory presentation of video content to suit their individual needs and preferences. Video customization for accessibility can include adjusting layo…
- Video Processing (Video Manipulation, Video Editing Pipeline)
- The computational techniques used to analyze, modify, and transform video content, including operations like segmentation, object removal, background replacement, audio separation, caption generation,…
- Video Segmentation (Scene Segmentation, Video Scene Detection)
- The process of dividing a video into meaningful segments or scenes based on visual changes, content shifts, or thematic transitions. Video segmentation enables granular customization and navigation, a…
- Video Summarization (Video Summary, Video Condensation)
- The process of creating a shortened version of a video that captures its key content, either through extractive methods (selecting key segments) or abstractive methods (generating new condensed conten…
- Viewability (Video Viewability)
- A subjective measure of how watchable and consumable a video is for a particular viewer, encompassing factors like ability to focus on content, level of distraction, information comprehension, and ove…