Short answer: In YouTube Studio, open Subtitles, choose the video, add a language and pick how to add the text: upload a file, auto-sync a transcript or type it. YouTube can also create automatic captions, but review them before you rely on them. If your customers speak Spanish, add a Spanish track as its own language.
What YouTube captions and subtitles are
In this guide, captions show what is said in the video’s own language, and subtitles translate it into another one. YouTube says both let you share your videos with a larger audience, including deaf or hard-of-hearing viewers and viewers who speak another language.
Captions in the same language also help non-native speakers and people watching in a loud place, YouTube adds. A caption file holds the text of what is said and the times when each line should appear.
The ways to add captions on YouTube
| Way to add them | How it works | When it suits you |
|---|---|---|
| Upload a file | You upload a subtitle file, with or without timing | You already have an .srt or .sbv file |
| Auto-sync | You type or upload a transcript in the video’s language; YouTube sets the timing | A script for a video under an hour |
| Type manually | You type or paste the text while the video plays | Short videos, or fixing a few lines |
| Automatic captions | YouTube creates them with speech recognition | A starting point you always review |
The ways come from YouTube Help; the last column is our advice.
For a first file, YouTube suggests SubRip (.srt) or SubViewer (.sbv). Both only need basic timing, you can edit them in any plain text editor, and YouTube reads only their basic versions, saved as plain UTF-8.
How to add captions to a YouTube video
- Sign in to YouTube Studio.
- From the left menu, select Subtitles.
- Select the video you want to caption.
- Click Add language and choose the language.
- Under Subtitles, click Add and choose a way to add the text.
- Watch the video with the captions on and fix names, numbers and prices.
- Publish, then repeat with a second language if your customers speak it.
Steps 1 to 5 follow YouTube Help; the last two are ours. YouTube notes that you can also add captions while you upload the video. When you type them by hand, add sounds like [applause] so viewers know what is going on.
Automatic captions: use them, then check them
YouTube uses speech recognition to create automatic captions and publishes them when they are available. They only come in the video’s default language, and they may not be ready right after you upload.
YouTube warns that automatic captions can misrepresent what is said because of mispronunciations, accents, dialects or background noise, and asks you to review them and edit anything transcribed wrong. It also encourages creators to add professional captions first.
When no automatic captions appear, YouTube lists likely causes. The audio may still be processing, the language may not be supported or the video may be too long. The sound may be poor, a long silence may open the video, or several speakers or languages may overlap.
Subtitles in Spanish for your customers
A Spanish track is just another language in the same Subtitles section. For a video spoken in English, upload a timed Spanish file or type the text. Auto-sync needs a transcript in the language spoken in the video, and YouTube doesn’t recommend it for videos over an hour or with poor audio. YouTube says viewers who speak other languages can find and watch your videos with subtitles. Translated titles and descriptions can also show up in YouTube search for viewers who speak those languages. Our YouTube SEO guide covers what else helps a video show up in search.
Have a person who speaks Spanish write or check that track, so names, prices and the way you address customers sound right. The same applies to the short videos you post elsewhere: our Instagram Reels guide and our Facebook video ads guide cover captions for viewers who watch with the sound off.
Captions are also part of making a business accessible, which our ADA website compliance guide covers for your site. For the images around your videos, our YouTube thumbnail size guide lists the sizes YouTube asks for.
Before you publish captions
- Every video has captions in the language it is spoken in.
- You watched it once with the captions on.
- Names, numbers, prices and addresses are right.
- Sounds that matter appear in brackets, like [applause].
- Spanish subtitles were written or checked by a person who speaks Spanish.
- Uploaded files are .srt or .sbv, saved as plain UTF-8.
RememberAdd captions in YouTube Studio under Subtitles, one language at a time. Automatic captions are a start, not the finish: review them, fix names and numbers, and add a Spanish track if your customers speak Spanish.
Our video production service, for businesses in Miami-Dade, cuts short vertical videos with captions for viewers who watch without sound, in English, Spanish or both. Captions cost the same in one language or two.
Common questions about YouTube captions
What is the difference between captions and subtitles?
In this guide, captions show what is said in the video’s own language, and subtitles translate it into another one. YouTube uses both words together, and its tools add either kind as a language track on the video.
Does YouTube add captions automatically?
Often, yes. YouTube uses speech recognition to create automatic captions and publishes them when they are available. They are only in the video’s default language, they may not be ready right after upload, and YouTube asks you to review them.
How do I add Spanish subtitles to a YouTube video?
In YouTube Studio, open Subtitles, choose the video, click Add language and pick Spanish. If the video is spoken in English, upload a timed Spanish file or type the text, because auto-sync needs a transcript in the spoken language. Then publish it.
What subtitle file does YouTube accept?
Several. For a first file, YouTube suggests SubRip (.srt) or SubViewer (.sbv): they only need basic timing and you can edit them in any plain text editor. Basic versions only, saved as plain UTF-8.
Why didn’t YouTube create automatic captions for my video?
YouTube lists a few reasons. The audio may still be processing, the language may not be supported or the video may be too long. The sound may also be poor, a long silence may open the video, or several people or languages may overlap.
Sources
Sources read on November 6, 2026: Add subtitles & captions, Use automatic captioning, Supported subtitle and closed caption files and YouTube tools to translate your content (YouTube Help).