subtitle Format
SBV File Format
YouTube SubViewer is Google YouTube’s simplified native subtitle export format, featuring comma-separated start and end timestamps followed by dialogue.
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Technical Specifications
| Extensions | .sbv |
| MIME Types | text/x-subviewer |
| Category | Subtitle |
| Engine Tier | tier1-small-js |
| Magic Bytes / Sniffing | Container sniffing (ZIP / OLE2 / RIFF header inspection) |
| Opens With | YouTube Studio, text editors |
| Good For | Exporting and editing raw YouTube caption tracks. |
| Not Recommended For | Third-party desktop video players. |