Convert SBV to SRT Online Free
Convert YouTube SBV caption files to SRT subtitle format for use in video editors, media players, and subtitle tools. ChangeThisFile handles the timestamp and structure conversion.
By ChangeThisFile Team · Last updated: March 2026
ChangeThisFile converts SBV to SRT on a secure server. Upload your SBV caption file and it is converted to SRT with numbered cue indexes and properly formatted HH:MM:SS,mmm timestamps. Files are auto-deleted after conversion. Free with no signup required.
Convert SBV to SRT
Drop your SBV file here to convert it instantly
Drag & drop your .sbv file here, or click to browse
Convert to SRT instantly
SBV vs SRT: Format Comparison
Key differences between the two formats
| Feature | SBV | SRT |
|---|---|---|
| Origin | YouTube / Google Video | Universal subtitle standard |
| Timestamp format | H:MM:SS.mmm,H:MM:SS.mmm | HH:MM:SS,mmm --> HH:MM:SS,mmm |
| Cue index | Not used | Sequential integer |
| Styling | None | Basic bold/italic/underline |
| Player support | YouTube, few others | All major video players |
| Block separator | Blank line | Blank line |
| File header | None | None required |
When to Convert
Common scenarios where this conversion is useful
Editing YouTube captions in a subtitle editor
YouTube exports captions in SBV format. Tools like Aegisub, SubtitleEdit, and Subtitle Workshop require SRT. Converting SBV to SRT unlocks the full editing workflow.
Using YouTube captions in a video editor
Adobe Premiere Pro, DaVinci Resolve, and Final Cut Pro all import SRT natively. If you downloaded captions from YouTube in SBV format, converting to SRT lets you burn or embed them in your project.
Publishing captions on non-YouTube platforms
Platforms like Vimeo, Wistia, and custom video players accept SRT but not SBV. Convert your YouTube captions to SRT for multi-platform distribution.
How to Convert SBV to SRT
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1
Upload your SBV file
Drag and drop your SBV caption file onto the converter, or click browse to select it. The upload is encrypted.
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2
Server-side conversion
The server parses the SBV timestamp blocks, adds sequential index numbers, converts timestamps to SRT's comma-millisecond format, and writes the output.
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3
Download the SRT
Save your converted SRT subtitle file. The server copy is automatically deleted after processing.
Frequently Asked Questions
SBV (SubViewer) is YouTube's proprietary caption format. Each cue starts with a start and end timestamp on one line separated by a comma (H:MM:SS.mmm,H:MM:SS.mmm), followed by the caption text and a blank line.
In YouTube Studio, go to Subtitles, click the three-dot menu on a subtitle track, and choose Download. YouTube offers SBV as one of the download formats.
Yes. Timestamps are converted with full millisecond precision. The only change is the separator: SBV uses a period (.) before milliseconds, SRT uses a comma (,).
SBV simply does not include sequential cue numbers. ChangeThisFile adds sequential numbers starting from 1 to produce a valid SRT file.
Yes. After editing the SRT in a subtitle editor, you can upload it back to YouTube. YouTube accepts SRT uploads in addition to its native SBV format.
Yes. Multi-line caption text in SBV files is preserved as multi-line text in the SRT output.
Yes. Files are transferred over HTTPS and automatically deleted from the server after your converted SRT is ready for download.
Yes. ChangeThisFile supports SRT to SBV conversion for uploading edited captions back to YouTube.
Caption files are plain text and very small. The 50 MB server limit is not a concern.
Yes. UTF-8 encoding is preserved during conversion, so all Unicode characters including Chinese, Arabic, and accented Latin characters are maintained.
Related Conversions
Need to convert programmatically?
Use the ChangeThisFile API to convert SBV to SRT in your app. No rate limits, up to 500MB files, simple REST endpoint.
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