Meaning · Language · Playback
Closed captions vs. subtitles.
Closed captions show speech and important sounds in a track viewers can switch off. Subtitles often translate dialogue, and can be switchable too.
Two separate choices
- What the text conveys
- Speech, meaningful sounds, or a translation.
- How it appears
- A track viewers can switch, or text that stays visible.
A translated subtitle track can be closed too. The labels describe different aspects of the same video.
The short answer: captions convey speech and important audio information in time with a video. Subtitles often translate dialogue into another language. Closed means the viewer can switch the track on or off. A subtitle track can also be closed, so content and playback control are separate decisions.
What is the difference?
This guide follows W3C WAI's terminology: captions use the spoken language; subtitles translate the audio. In some regions, subtitles refers to both. Look at the language and track description, including labels such as CC or SDH.
Scroll the table sideways to compare all columns.
| Question | Captions | Subtitles, as used here |
|---|---|---|
| Main purpose | Make speech and relevant audio available as text. | Make spoken content understandable in another language. |
| Information included | Dialogue, plus speaker identification and meaningful sounds where needed. | Translated dialogue. A track can also include sound and speaker information, as with SDH. |
| Language | The same language as the audio, in WAI's usage. | A different language, in this guide's usage. |
| Timing | Displayed in sync with playback. | Displayed in sync with playback. |
Captions help people who cannot hear the audio, including viewers watching with sound muted. A translated track with descriptions of relevant sounds can serve someone who needs both language access and information about meaningful sounds.
The same scene, different information.
Imagine an off-screen speaker named Maya giving an instruction as a timer sounds. These invented lines illustrate the difference; they are not a real transcript or output from the tool.
English captions
MAYA: Take the tray out now.
[timer beeps]
Includes the words, the otherwise unclear speaker, and a relevant sound.
Spanish dialogue subtitles
Saca la bandeja ahora.
This illustrative translation conveys the dialogue. A Spanish SDH track could add the relevant audio information too.
The Spanish line was written for this guide. Instranscript returns the spoken language and does not generate translations or automatically add these sound labels.
Closed vs. open is about control.
- Closed captions
- A supporting player lets the viewer enable or disable the caption track. The text is displayed when that track is selected.
- Open captions
- The text remains visible and cannot be switched off. Rendering the words into the video frames, often called burning them in, is one way to deliver open captions.
These distinctions follow the WCAG captions definition. Language is a separate choice: translated subtitles can be supplied as a selectable track or rendered into the picture.
An SRT filename alone does not tell you how the words will appear. A player must support and expose the track controls for closed-caption playback. If you render that same text into the picture in an editor, it will stay visible. See W3C's guidance on closed-caption playback support.
Where does a transcript fit?
A transcript is text you can read independently of playback. It can have useful timestamps; their presence does not turn it into a caption track. WAI's transcript guidance also covers relevant audio information and descriptive transcripts that include visual details.
For notes or a quote, a speech transcript can help you find and check the words. For captions over a video, you need timed text and a way to display it. A written Instagram post caption is a separate item: use the Reel text guide if you need the creator's post description.
Choose what to deliver.
- Reading or quoting the spoken words? Use Copy or TXT, review the wording, and keep the source link with your notes.
- Showing text during playback? Use a timed track where supported, or render text into your video. For an Instagram editing workflow, follow the subtitle creation guide.
- Communicating important audio without sound? Review the speech, identify speakers where otherwise unclear, and add relevant sound descriptions. WAI explains what to transcribe; a speech-only draft may miss this information.
- Reaching viewers in another language? Arrange and review a translation separately. Saving words as SRT or VTT changes their file format, not their language.
Start with the spoken words from your Reel.
Instranscript accepts supported public Instagram Reel and video-post links. It returns original-language speech with Copy and TXT, plus SRT and VTT when usable timing is returned. Review the wording and timing before using an export.
Get an Instagram transcriptThe tool does not translate, add a complete set of sound descriptions, edit video, or burn in captions. Use the download guide to choose a file format, then the SRT opening guide to read or preview an exported file.
Questions about captions and subtitles
Are closed captions and subtitles the same thing?
The terms overlap, and usage varies by region. W3C WAI uses captions for speech and relevant sounds in the original language, and subtitles for translated audio. Closed describes a track that the viewer can switch on or off. A translated subtitle track can also be switchable and can include sound descriptions.
What does SDH mean in a subtitle menu?
SDH means subtitles for the deaf and hard of hearing. These tracks include dialogue and relevant audio information, such as speaker identification and meaningful sounds. Check the track description and language rather than assuming every option labeled subtitles contains the same information.
Does an SRT file automatically count as closed captions?
The extension alone is not enough. The file needs appropriate text and timing, and the playback system must let the viewer enable or disable its track for it to function as closed captions. Speech-only text may still need relevant sound descriptions or speaker labels.
Can a transcript include timestamps?
Yes. A transcript can include useful timestamps and still be read as a document. Captions are synchronized with playback. Choose the output based on whether you need a readable text document or a timed track for a video.
Will downloading SRT translate my Instagram video?
No. Instranscript exports the original-language spoken words with available timing. Changing the file format does not translate them. Translation, relevant sound descriptions, caption review, and rendering text into a video require separate work.
Terminology checked against the linked W3C WAI and WCAG documentation on October 15, 2026. Track names vary by region and player; check the actual content, language, and playback controls.