What is a Caption?

If you've ever watched a video with text at the bottom of the screen, you've seen a caption in action. Captions convert audio into readable text, appearing on-screen in sync with the video. They include dialogue, speaker identification, and important sounds like [door slams] or [music playing].

Nearly 50% of US viewers watch videos with captions regularly. What started as an accessibility feature has become essential for everyone—from people watching in noisy environments to non-native speakers improving comprehension.

Captions vs Subtitles

People often confuse captions with subtitles, but they serve different purposes:

• Captions assume viewers cannot hear the audio. They include dialogue, sound effects [phone rings], music cues, and speaker identification.
• Subtitles assume viewers can hear but need translated dialogue. They typically don't include sound descriptions.

For example, captions might show "[dramatic music]" before a tense scene, while subtitles would only display the spoken words.

Types of Captions

Closed Captions (CC)

Closed captions can be turned on or off by viewers. They're the standard for streaming platforms, YouTube, and broadcast TV. Viewers can customize size, color, and position.

Open Captions

Open captions are permanently embedded in the video—viewers cannot turn them off. They're ideal for social media videos and public displays where viewers can't access settings.

Live Captions

Live captions are generated in real-time during broadcasts, events, or meetings. They use speech recognition technology to convert spoken words to text instantly. This is what Stage Captions provides for conferences and live events.

Why Captions Matter

Accessibility

Captions make content accessible for deaf and hard of hearing viewers, people with auditory processing disorders, and those in noisy environments.

Better Engagement

Many viewers watch videos with sound off—especially on mobile or in public. Captions ensure your message reaches them regardless of their audio situation.

Improved Comprehension

Reading text while listening improves retention. This benefits language learners, educational content, and complex presentations.

Legal Compliance

The ADA, Section 508, and WCAG guidelines require captions for many types of content. Broadcast television and streaming services must provide closed captioning.

Key Takeaways

• A caption is text displaying all audio content—dialogue, sounds, and music—synchronized with video
• Closed captions can be toggled; open captions are permanent
• Live captions are generated in real-time for broadcasts and events
• Captions improve accessibility, engagement, and legal compliance