Auto subtitle generator — speech in, burned-in subtitles out

It runs speech recognition on the video's audio, splits the transcript into short lines with start and end times, and shows them in sync with the voice. Kenerate's version then burns those lines into the frames in your chosen style, so you download one finished MP4 instead of a separate subtitle file. A run takes about 1–3 minutes.

Yes — burning subtitles into the video is the only output here. Kenerate's auto subtitle generator draws the subtitles into every frame and returns one MP4 at 720p or 1080p, so they show in any player or app without a separate file. The trade-off: viewers can't turn them off, and the text can't be changed after export.

No. Kenerate burns subtitles into the video and doesn't export SRT, VTT or any other subtitle file. If you need a file, for a YouTube subtitle upload, a website player or a translator, use a tool that exports one: OpusClip lists TXT, SRT and VTT, and VEED lists SRT, VTT and TXT on their own pages, checked 3 October 2026.

Auto-detect plus 10 spoken-language options: English (US), English (India), Spanish, French, German, Japanese, Chinese, Italian, Portuguese and Russian. Hindi isn't available yet. Subtitles always come out in the spoken language, because the tool transcribes and doesn't translate. For other languages, dub the video with Kenerate's AI dubbing first, then subtitle the dubbed version.

Dub first, then subtitle. Kenerate's AI dubbing translates and re-voices a video into one of 33 target languages, keeping each speaker's voice. Run the dubbed video through Auto Subtitles with the new language pinned, and you get subtitles in that language. This works when the dub language is one the subtitle tool lists, such as Spanish, French, German or Japanese.

It is most accurate on clear speech in a listed language. For accented English, pin English (US) or English (India) rather than relying on Auto-detect; for other languages, pin the language you hear. Background music, crosstalk and echo cause most errors, and because subtitles can't be edited after generation, cleaning up the audio before uploading matters more here than in editable tools.

Up to 4 minutes and 100 MB per video, in MP4, MOV or WebM. For a longer video, cut it into parts under 4 minutes, subtitle each part and join them in your editor. Pricing goes by length tier, up to 1, 2, 3 or 4 minutes, with no subscription required, and new accounts get starter credits to try it.