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SBV to SRT Converter — Free Online

Convert YouTube SBV subtitle files to SRT format. Paste your SBV or upload a file — no account required, nothing uploaded to any server.

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Choose file

Click to upload .sbv file

or paste SBV content below

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What is an SBV file?

SBV (SubViewer) is the native subtitle format used by YouTube. When you download captions directly from YouTube Studio or via the YouTube Data API, they arrive as .sbv files. SBV is a plain text format similar to SRT, but with two key differences: it uses dots instead of commas to separate milliseconds (0:00:01.000 instead of 00:00:01,000) and it omits the sequential block numbers before each cue. Most video editors and subtitle tools do not support SBV natively, which is why converting to SRT is almost always the first step after downloading YouTube captions.

Why convert SBV to SRT?

SRT (SubRip Text) is the universal subtitle standard supported by virtually every video editor (Premiere Pro, DaVinci Resolve, Final Cut Pro), player (VLC, Plex), and platform (Netflix, Vimeo, Wistia). If you have downloaded subtitles from YouTube and want to edit them, import them into a video editor, translate them, or upload them to another platform, you will need to convert SBV to SRT first. This tool does that conversion entirely in your browser — nothing is uploaded to any server.

How the conversion works

The converter parses each SBV timestamp block, normalises the timestamp format (dot → comma, zero-pads the hour), assigns sequential block numbers, and outputs standard SRT. The subtitle text and timing are preserved exactly — no content is altered. The conversion is lossless: converting back from SRT to SBV would reproduce the original content faithfully.

How to convert SBV to SRT

  1. 1

    Upload or paste your SBV file

    Click the upload zone to select a .sbv file downloaded from YouTube, or paste the raw SBV content into the text box.

  2. 2

    Click Convert SBV → SRT

    The tool parses every timestamp block, adds sequential block numbers, and converts the timestamp format to standard SRT.

  3. 3

    Download the SRT file

    Click "Download .srt file" to save the result. The SRT file is ready to import into any video editor, subtitle tool, or upload to any platform.

Frequently Asked Questions

Where do SBV files come from?
SBV files come from YouTube. When you download auto-generated or manually uploaded captions from YouTube Studio (Subtitles section → download), YouTube exports them as .sbv files. The YouTube Data API also returns captions in SBV format.
What is the difference between SBV and SRT?
Both formats store subtitle text with start/end timestamps. SBV uses dots for milliseconds (0:00:01.000) and has no block numbers. SRT uses commas (00:00:01,000) and numbers each block sequentially. SRT is the universal standard; SBV is YouTube-specific.
Is the conversion lossless?
Yes. The tool only changes the timestamp format and adds block numbers. All subtitle text and timing is preserved exactly. No content is modified or lost.
Can I convert SRT back to SBV?
Yes — use our SRT to SBV converter, which does the reverse: strips block numbers and converts the timestamp format back to YouTube's SBV style.
Does my file get uploaded to any server?
No. The entire conversion runs in JavaScript in your browser. Your SBV file never leaves your device.
Will the converted SRT work in Premiere Pro and DaVinci Resolve?
Yes. The output is standard SRT format, compatible with Premiere Pro, DaVinci Resolve, Final Cut Pro, Avid, and all major video editors. Import via File → Import (Premiere) or Timeline → Import Subtitle (DaVinci).
Can I convert multi-language YouTube captions?
Yes. Download each language as a separate SBV file from YouTube Studio and convert each one separately. The subtitle text encoding (UTF-8) is preserved, so non-Latin scripts (Chinese, Arabic, Hindi, etc.) convert correctly.

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