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Medicine LibreTexts

18.4: Captioning

  • Page ID
    141218
    • Sara Bradbury Máñez

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    Introduction


    In this section, we’ll dive into the world of captioning, which plays an essential role in making content accessible, especially for individuals who are deaf or hard of hearing. Captioning is used in many settings, such as healthcare, media, and education, to ensure that information is accessible to all audiences. Here, we will explore what captioning is, the tools required, and provide hands-on practice so you can get started with this valuable skill.

    1. What is Captioning?

    • Definition:
      • Captioning involves adding time-synchronized text to video content to represent spoken words, sound effects, music, and other relevant audio elements.
    • Types of Captioning:
      • Closed Captions (CC): These can be turned on or off by the viewer. Closed captions are used for all types of content, including TV shows, movies, and educational videos.
      • Open Captions: These are always visible, meaning they are “burned” into the video and cannot be turned off.
      • Subtitles: While similar to captions, subtitles only convey spoken language, not sound effects or other non-verbal elements.
      • Descriptive Video Service (DVS): An audio narration track that describes visual elements of a video for viewers who are blind or have low vision. While related to accessibility, DVS is distinct from captioning.
    • Importance:
      • Captioning is vital for accessibility and inclusion. It helps make content understandable to people who may not be able to hear the audio, and it also benefits non-native speakers or anyone in noisy environments who may have difficulty understanding the audio.

    2. Skills Needed for Captioning ChatGPT Image Dec 12, 2025, 03_13_42 AM.png

    • Listening Skills:
      • Accurate listening is essential. Captioning requires accurately capturing spoken language and relevant audio elements, including pauses, overlapping speech, and background sounds.
    • Typing Speed and Accuracy:
      • Captioners must be able to type quickly and accurately to keep up with the audio while ensuring that the text is correct and synchronized with the video.
    • Knowledge of Captioning Standards:
      • Captioners need to be familiar with industry guidelines, such as FCC captioning standards and accessibility requirements, to ensure their work meets legal and quality expectations.
    • Attention to Detail:
      • This includes paying attention to details like punctuation, speaker identification, and formatting. A minor error in timing or a missed sound effect can impact the quality and accessibility of the caption.
    • Familiarity with Software Tools:
      • Captioners need to be proficient with captioning software such as Aegisub, Amara, Rev, or YouTube's captioning tools, which help automate part of the process and improve efficiency.

    This page titled 18.4: Captioning was last modified on Thu, 05 Nov 2026 01:45:04 GMT and is shared under a CC BY-NC 4.0 license and was authored, remixed, and/or curated by Sara Bradbury Máñez.

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