Auto-subtitle
Generate SRT or WebVTT captions from audio or video.
Drop an audio or video file, or click to choose
Up to 25 MB. MP3, M4A, WAV, MP4, WebM.
About Auto-subtitle
Generate ready-to-use SRT or WebVTT subtitle files from any video or audio recording. Drop in your file, get back timed captions you can attach to YouTube, Vimeo, or burn into the video with a desktop editor. Multi-language support.
Frequently asked questions
What output format do I get?+
Both SRT (most common) and WebVTT (used by HTML5 video). Pick either at download time.
Will the timing be accurate?+
Yes — word-level alignment from Whisper means captions sync within a fraction of a second.
Can it translate while captioning?+
Yes — you can ask for English captions even from a non-English source.
Does it handle background music?+
Whisper is fairly robust to music and ambient noise, but very noisy mixes will hurt accuracy.
Can I burn the captions into the video?+
Not directly — download the SRT and use the Convert media tool or a desktop editor like Handbrake or DaVinci to burn them in.