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Subtitle Extractor

Extract All Subtitles from Video - Online Subtitle Ripper

Subtitle Extractor guide

Subtitle Extractor Description

Subtitle Extractor: Fast and Private Video Subtitle Ripping

The Subtitle Extractor is a powerful, browser-based utility designed to extract embedded subtitle tracks from video files like MKV, MP4, MOV, and AVI. Unlike traditional online converters, our tool processes everything locally on your device, ensuring that your large video files never leave your computer. This provides absolute privacy and eliminates the wait times associated with uploading and downloading large files.

Features

Multi-Format Support: Works with MKV, MP4, MOV, and AVI containers.
Track Identification: Automatically detects all embedded subtitle tracks, including language labels and codec types (SRT, ASS, VTT, etc.).
Batch Extraction: Extract all found subtitle tracks at once with a single click.
Privacy First: Powered by FFmpeg.wasm, all processing happens in your browser. Your data is 100% secure and private.
High Speed: Since there is no data transmission, extraction is nearly instantaneous even for multi-gigabyte files.
Preview Capability: View the content of the extracted subtitles directly in the built-in editor before downloading.

How to Use

1
Select Your Video: Drag and drop your video file (MKV, MP4, etc.) into the upload area or click to select a file.
2
Start Extraction: Click the "Extract Subtitles" button. The tool will use FFmpeg to probe the file and identify all subtitle streams.
3
Review Found Tracks: A list of detected tracks will appear, showing their language and format.
4
Download: Click on the download button next to a track to save it as an SRT or VTT file. You can also click on the track to preview its content.

FAQ

Q. Q: Can it extract hardcoded subtitles?
A: No. Hardcoded subtitles are part of the video image itself. To extract those, you would need an OCR (Optical Character Recognition) tool. This tool is for embedded "soft" subtitles. **Q: Does it work with encrypted or DRM-protected files?** A: No. The tool cannot process files protected by Digital Rights Management (DRM). **Q: Is there a file size limit?** A: There is no hard limit, but performance depends on your computer's memory and the browser's capabilities. Most modern browsers can handle files up to several gigabytes. **Q: What formats are the subtitles saved in?** A: Most tracks are extracted in their original format or converted to .srt (SubRip) or .vtt (WebVTT) for maximum compatibility.

Overview

Embedded subtitles (also known as soft-subs) are separate data streams stored within a video container. They can be toggled on or off and switched between different languages. The Subtitle Extractor allows you to "demux" these tracks and save them as independent text files (SRT or WebVTT), which are compatible with almost all media players and video editing software.

Common Use Cases

  • Language Learning: Extract subtitles to create flashcards or study scripts from your favorite movies.
  • Media Compatibility: Rip subtitles from MKV files to use with devices or players that don't support embedded tracks.
  • Video Editing: Quickly grab the text of a video for reference or to create new versions of the subtitles.
  • Archiving: Keep a separate text record of a video's dialogue for easy searching and indexing.

Technical Background

The tool utilizes FFmpeg.wasm, a port of the world-leading multimedia framework FFmpeg to WebAssembly. This allows the tool to parse complex video containers and extract specific data streams directly in the browser.

The process involves:

  • Probing: Reading the file header to map out the internal structure.
  • Demuxing: Separating the subtitle stream from the video and audio streams without re-encoding the data.
  • Conversion: If necessary, converting internal formats (like ASS) into common formats like SRT for better compatibility.
3M

Reviewed by Tool3M Editorial Team

Updated April 25, 2026

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