Embed Subtitles
Mux a subtitle track into a video container as a soft subtitle stream. Unlike burning, embedded subtitles can be toggled on or off by the viewer in a compatible player. SnapOtter handles the muxing on your own server with no external services.
Features
- Muxes SRT or ASS subtitles as a soft stream in the video container
- Subtitles can be toggled on or off by the viewer in compatible players
- Copies the video and audio streams without re-encoding
- Supports adding multiple subtitle tracks for different languages
- All processing runs on your self-hosted instance with no cloud uploads
What you can do
- Add multilingual subtitle tracks to a corporate training video
- Embed closed captions into educational content for accessibility compliance
- Package subtitle files alongside video for distribution on internal platforms
- Prepare videos with toggleable captions for a learning management system
Self-hosted. Your files never leave your network.
SnapOtter runs entirely on your own infrastructure. Files processed with Embed Subtitles are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- What is the difference between embedding and burning subtitles?
- Embedded subtitles are stored as a separate text stream that viewers can toggle on or off. Burned subtitles are rendered into the video pixels permanently. Embedding preserves flexibility. Both options process locally on your server.
- Does embedding subtitles re-encode the video?
- No. Embedding muxes the subtitle stream into the container without touching the video or audio tracks. This means zero quality loss and fast processing. Everything runs on your own server.
- Will the subtitles work in all players?
- Most modern players (VLC, MPV, web browsers) support soft subtitles in MP4 and MKV containers. Some basic players may not display them. SnapOtter processes everything locally so your content stays private.
Ready to try Embed Subtitles?
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