How to Add SRT Captions to YouTube Shorts (2026)

Adding an SRT to YouTube Shorts is the same upload as a long video, on a much shorter file. The failure is timing the SRT to the original minute and then posting a 20-second cut. Every line lands late, and the Short is over before the first cue looks right.

Tool shopping for the look is best caption tools for YouTube Shorts. This page is the file on the Short.

Direct answer

1. Export the vertical file you will upload. Not the long master.
2. Transcribe that file.
3. Keep the lines short enough for a phone.
4. Export SRT.
5. Upload the Short, open Subtitles in YouTube Studio, and upload the SRT.
6. Watch it muted, on a phone, from the start.

Caption the cut, not the parent video

A Short is often a slice of a longer recording. The SRT for the long video does not apply. The first word of the Short is not time zero on the master.

If you still have an MKV of the whole session, do not caption that hour and hope the Short inherits it. Cut the Short first. If that cut itself is an MKV, add subtitles to MKV on the short file. Then upload the video you captioned.

A later trim in the editor, even by half a second, means export the SRT again.

Make a short-file SRT

1. Upload the Short on File Transcribe.
2. Fix names. A wrong name on a Short gets screenshotted faster than on a 20-minute video, because the whole frame is the caption.
3. Aim nearer 32 characters a line than 42. Two lines is already a lot on a vertical video. The reasoning is how many characters per line.
4. Split any cue that covers two sentences. A Short does not have time for a paragraph.
5. Export SRT on Pro or Plus.

Free is about 50 minutes a month, TXT or PDF. Pro is about $19/month. Plus is about $49/month. Confirm on /pricing. One Short is tiny. The plan is for the SRT, not for the duration.

The editor will not publish the Short. You upload the file in Studio.

Upload it in Studio

1. Upload the video in YouTube Studio, or open the Short that is already there.
2. Open Subtitles.
3. Add your language and upload the SRT.
4. Play from 00:00. The first cue should sit on the first word, not on the beat before it.
5. Check the middle, even if the middle is second eight.

Studio is the same panel as a long video when the Short is a video in your channel. If you posted only from the phone app and you cannot find a caption file upload, do not invent one. The burned-in words are what that app post is showing. Upload the same file in Studio when you want a real track.

Auto captions, if YouTube has already made them, are a draft. Replace them with the SRT when the names matter. Adding a track does not remove words you burned into the picture. Those pixels stay.

Burned-in words are not this upload

CapCut-style captions are visible with the sound off even when Studio has no track. They are also wrong forever if the name is wrong, unless you render again. The comparison is CapCut captions vs an SRT.

Use both when you care about the muted scroll and about search, translation, or a viewer who turns captions on:

• Burn the style into the Short if that is the look.
• Upload the SRT so the track exists.

Use only the SRT when the picture should stay clean and Studio's captions are enough. A talking-head Short often does not need karaoke text.

Check the phone, not the desktop preview

Studio's preview is wide. The Short is tall. A two-line cue that looked fine on your monitor can sit on the like button or on your face.

Play the public or unlisted Short on a phone, sound off. If you cannot finish the line before it vanishes, split it or cut words. The timing pass for that judgment is how to time captions to speech.

FAQ

How do I add an SRT to a YouTube Short?

Upload the Short, open Subtitles in YouTube Studio, and upload an SRT timed to that vertical file. Build the SRT from the cut you posted, not from a longer master.

Do Shorts support SRT?

A Short that lives in YouTube Studio can take a caption file the same way a long video can. A phone-only post with no caption upload is a different surface. Burn-in covers that feed. The SRT still belongs on the Studio copy.

Should I use YouTube's auto captions on a Short?

For a low-stakes clip with no names, sometimes. For a product, a person, or a number, upload your own file. Auto captions are a draft, and on a 15-second video one wrong word is the whole video.

Can one SRT cover the long video and the Short?

No. They start at different times. Caption each file. You can reuse the words. You cannot reuse the timestamps.

Does the SRT replace burned-in captions?

No. Burning words into the MP4 and uploading an SRT solve different problems. The track is what Studio and viewers can toggle. The pixels are what a muted feed shows even if the track fails.

Upload the vertical cut on File Transcribe, export the SRT, and put that file in Studio before you judge the Short by its view count.

More guides

• Transcription guides
• Try File Transcribe free
• Transcript format guide
• Best transcription software
• Transcribe YouTube videos

Further reading

• W3C captions overview
• Google Speech-to-Text docs