SRT vs VTT: Which Caption File Should You Download?

Choose SRT for a basic YouTube subtitle upload or a destination that requests SubRip; choose VTT when a web player requests WebVTT. YouTube formats, WebVTT’s purpose. For the same selected caption style, Studio’s SRT and VTT downloads contain matching text and cue times; Word pop changes cue grouping. Neither file keeps the visible style. You can get both free after Google sign-in; Studio currently recognizes English only.

What did we download from Studio?

Our October 12, 2026 test used desktop Chrome on macOS, a free local account and a six-second clip with computer-generated English speech. The plain blue picture is test footage. We corrected punctuation, downloaded both formats, checked a split and exported Boxed captions. The MP4 had 1080×1920 video at 30 fps with audio; a frame check showed the first sentence in its black box. We did not upload to a social platform. Modisign publishes this guide and sells Pro.

For the same workflow, have your local English-speaking video, a desktop browser and a Google account ready. Modisign Studio requires free Google sign-in. Its captions sit over your footage; you can also layer motion-graphics elements over it.

What are SRT and VTT files?

SRT, or SubRip, is a plain-text subtitle file containing numbered cues. A cue is one piece of text with a start and end time. YouTube recommends it as a basic caption format and requires plain UTF-8 text, without supported style markup. YouTube’s SRT guidance.

This is the three-cue excerpt from our Studio SRT download after punctuation edits:

1
00:00:00,000 --> 00:00:02,016
Keep your caption file.

2
00:00:02,016 --> 00:00:03,296
Check every word.

3
00:00:03,296 --> 00:00:05,000
Download both formats.

VTT, or WebVTT, is a timed-text format designed for web video text tracks. It starts with WEBVTT and uses a period before milliseconds. Cue identifiers are optional, although Studio includes numbers. The format can carry positioning and styling information; that does not mean every exporter includes it or every destination uses it. W3C’s WebVTT draft.

Here are the same three cues from our VTT download:

WEBVTT

1
00:00:00.000 --> 00:00:02.016
Keep your caption file.

2
00:00:02.016 --> 00:00:03.296
Check every word.

3
00:00:03.296 --> 00:00:05.000
Download both formats.

The wording and times match. Neither download contains the black Boxed background seen in the video export. Our first cue starts during the opening silence, so check synchronization as well as spelling.

Difference	SRT	VTT
Opening	First cue number	WEBVTT, then a blank line
Milliseconds	Comma: 00:00:02,016	Period: 00:00:02.016
Cue labels	Sequential numbers	Optional identifiers; Studio uses numbers
Web presentation	Basic text in this workflow	Format supports cue placement and styling
Studio’s download	Text and times	Text and times, without Studio styling

The syntax and presentation distinctions follow Facebook’s SRT formatting guidance and the WebVTT specification; the last row comes from our downloads. Choosing VTT does not improve transcription accuracy.

Which platforms accept caption files?

These are official documented routes checked on October 12, 2026, rather than uploads we performed.

Destination	What the documentation supports	What to use
YouTube, including Shorts	SRT and VTT uploads through YouTube Studio’s subtitle-file workflow	Either Studio download; SRT is the basic choice. Formats, upload captions
Facebook	SRT uploads for videos; current Reel help also explicitly discusses uploaded SRT files	SRT with Facebook’s naming and formatting. VTT support is not established by these pages. Video uploads, Reel captions
TikTok	Auto captions and editable creator captions generated inside the app; no SRT/VTT import step in this help	Native captions or a video with captions already burned in. TikTok accessibility tools
Instagram Reels	Automatic closed captions generated from speech, enabled through More options; no SRT/VTT import step in this help	Native closed captions or a captioned video. Instagram Reel captions

For a YouTube Short, use desktop YouTube Studio: Shorts use its Upload videos flow. Then select the video under Subtitles, add English if needed, choose Add → Upload file → With timing, select your file and save. This applies YouTube’s documented subtitle route to your Short; it is not a separate file attachment in a mobile post description. Shorts upload instructions, subtitle instructions.

For Facebook, rename the download using its required pattern, such as caption-demo.en_US.srt for US English. Language letters are lower-case and country letters upper-case. Its computer help documents Edit post → Edit → Add captions → Upload, then Save. If an SRT is rejected, check UTF-8, cue numbering, comma timestamps and trailing blank lines against the current help. File naming, upload steps, formatting checks.

TikTok’s native creator captions offer line edits, font and color controls; Instagram’s native route creates closed captions from Reel speech. Use these when you prefer to finish in the destination app. The cited help does not establish SRT/VTT import in every publishing tool or account. TikTok, Instagram.

Which file does your destination accept?

Ask for the receiving platform or player’s supported format before downloading. Use SRT when its upload field requests SubRip, or VTT for a web text track that requests WebVTT. WebVTT is designed for external tracks through HTML’s track element. WebVTT’s intended use.

A subtitle file becomes a selectable track only when the destination supports and attaches it; it does not put words into the picture by itself. Closed captions can be shown or hidden, whereas burned-in text is always visible. W3C caption guidance. The related burned-in versus closed-caption guide covers that delivery decision.

How do you get both formats from Studio?

Generate and correct English captions with the free caption tutorial, then make the download-specific checks below. Google sign-in, transcript edits and both file downloads are free.

1. Finish the sequence and choose cue grouping. Captions follow trims, splits and reorders. In our split check, “Check every word.” became two cues across the cut. Choose Clean or Boxed for the phrase-based example here; Word pop groups individual words. Download only after final cuts so times match the delivered video.
2. Click Download SRT and Download VTT. Open both as plain text. Check matching words and times, sequential SRT cue numbers, the VTT header, timestamp separators and the first and last cue against the video. Visual font, position, size and motion do not travel in either Studio file.
3. Keep the files with their matching video version. Pro projects save caption style, position and size when captions are present, but never caption text. Download before closing or reloading; keeping a file preserves timed text, not automatic Studio restoration. If you also need a captioned picture, export Clean, Boxed or Minimal when no overlay configuration requires Pro.

Before uploading, check corrections against the speech, including names, numbers and missing words. Automatic captions need accuracy editing and meaningful non-speech audio where relevant. W3C caption advice. Our synthetic single-speaker clip did not assess that wider coverage. For recognition and model-cache details, see captions without uploading video.

If the same edit includes an opening hook-title overlay, its appearance remains in the video and is separate from the subtitle file. Keep a free overlay configuration unchanged for free video export.

Download both caption files in Studio before closing the tab, then keep the version that matches your destination.