AI Captions

Captions vs subtitles vs closed captions

The terms overlap in everyday software, but the output format and accessibility behavior are what matter.

By Shortform Signal Editorial Team · Published August 28, 2026 · Last reviewed August 28, 2026

The practical difference is how the text is delivered

TermUsually containsDelivered asViewer control
SubtitlesDialogue, often translation or transcriptionSeparate track/file or burned-in textDepends on delivery method
Closed captionsDialogue plus relevant non-speech audio informationSeparate timed text trackUsually can be turned on/off
Open captionsCaption text visible in the video imagePermanently rendered into the videoCannot be turned off
Animated social captionsStyled transcription synchronized to speechUsually burned into the social videoCannot be turned off after export

Why software labels are confusing

Consumer editing products often use “captions” and “subtitles” interchangeably in buttons and marketing. That does not change the output. Before choosing a tool, check whether it creates a separate SRT/VTT-style text file, a platform caption track, or text permanently rendered into the image.

Accessibility changes the decision

Closed captions are designed to make spoken dialogue and meaningful non-speech audio available as text. A burned-in animated transcript can help muted social viewers, but it is not automatically a substitute for a proper selectable caption track where accessibility requirements or platform features call for one.

If accessibility is central, prioritize accurate text, speaker identification where needed, relevant sound cues and the destination platform's supported caption format.

Submagic option

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Use the direct product route if the workflow described on this page matches what you need. If you are still evaluating, keep reading the decision support first.

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Choose by four questions

  1. Does the viewer need to turn the text on or off?
  2. Do you need a downloadable subtitle file for upload, localization or archive?
  3. Is the text part of the visual design of the short?
  4. Do relevant non-speech sounds need to be represented for accessibility?

If the answer is primarily “styled text that is part of the video,” a short-form caption workflow may be appropriate. If you need separate selectable captions or files, evaluate subtitle export first.

Common mistakes

  • Calling burned-in animated text “closed captions” when the viewer cannot turn it off.
  • Generating accurate words but omitting meaningful non-speech information in an accessibility workflow.
  • Creating an SRT file and then assuming the platform will automatically style it like social captions.
  • Burning captions into the image and also enabling a second visible caption layer without checking the result.
  • Using automatic translation without a fluent review when meaning matters.

For implementation, see how to add automatic captions.

Three real workflow examples

A Reel with bold word-by-word text: the visible text is usually open, burned-in social captioning. The viewer cannot turn it off after export, even if the editing app called the feature “subtitles.”

A YouTube upload with an SRT file: the timed text exists separately from the video image. The platform can display it as a selectable caption track, and the creator can update the text without re-rendering the video.

A translated training video: the production may need separate subtitle files for each language, plus accessibility captions for the source language. That is a different workflow from decorative social captions and should be planned before editing begins.

Why the distinction matters before export

If you burn text into the video and later discover a spelling or translation error, you normally need to render the video again. A separate caption track can be corrected independently. On the other hand, burned-in text gives the creator precise visual control and remains visible in environments where the platform caption layer is off.

The correct choice is therefore operational as well as semantic: decide whether you need visual styling, viewer control, accessibility metadata, localization handoff or some combination of those requirements.