Extract Subtitles
Save the subtitle tracks inside MKV and MP4 videos as SRT or WebVTT files.
Free · No upload · 100% on your device
Extract Subtitles
Choose videos, or drop them here.
MP4, MOV, MKV, WebM, AVI and more · No size or length limit. Nothing is uploaded.
100% on your device
How to use Extract Subtitles
- Choose your videos, or drop them on the page.
- Pick the settings in the side panel.
- Select “Extract subtitles”. The first use downloads the video engine once.
- Download the result. Your original file is left unchanged.
Private by design. Your files are processed in this browser tab and are never uploaded to KittySuite.
About Extract Subtitles
Only subtitles stored as text can be saved as SRT or WebVTT. Subtitles stored as pictures (common on DVDs and Blu-rays) and subtitles burned into the picture cannot be turned into text without OCR, so the tool tells you when that is the case.
Processing happens in this tab with FFmpeg compiled to WebAssembly; your files are never uploaded. The first video or audio tool you use downloads the 10 MB engine once and keeps it cached for next time. Long or high-resolution videos take longer than on a desktop editor, especially on phones, where files are processed one at a time to stay within memory. Keep the tab open until the download appears.
Extract Subtitles: frequently asked questions
How do I extract subtitles from an MKV or MP4?
Choose the video and SRT or WebVTT. Every text subtitle track is saved as its own file.
Why does it say there are no subtitles to extract?
Subtitles stored as pictures (common on DVDs and Blu-rays) or burned into the picture cannot become text without OCR, and the tool tells you when that is the case.
SRT or WebVTT?
SRT works in most video players and editors; WebVTT is the format web video players use.
Can I fix subtitle timing afterwards?
Yes. Open the file in Subtitle Converter and shift the timing.