Add Captions to Video
Auto-transcribe and burn subtitles into a video with Whisper — in your browser, nothing uploaded.
Seleziona un file audio o video
MP3, WAV, M4A, MP4, MOV, WebM — trascritto nel tuo browser con Whisper
Fai clic per scegliere o trascina qui un file
Come Add Captions to Video
- 1
Add your video
Drop in an MP4, MOV or WebM with an audio track — it's read in your browser, never uploaded.
- 2
Transcribe and review
Whisper transcribes the speech into timed caption lines. Fix any mistakes right in the list before you burn them in — corrections after that point mean starting over.
- 3
Style and export
Pick a position and size, then download SRT/VTT subtitle files, or burn the captions directly into the video as a new file.
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Add Captions to Video — domande frequenti
Is my video uploaded?+
No. Both the Whisper transcription and the caption burn-in run entirely in your browser. The video never leaves your device.
Which browsers work?+
Transcription works broadly. Burning captions into the video needs WebCodecs — Chrome, Edge or Safari 17+. You can still download SRT/VTT subtitle files anywhere transcription works.
Can I fix mistakes before burning them in?+
Yes — every caption line is editable after transcription. Fix anything Whisper got wrong before you burn it in, since that step is permanent.
Does burning in captions reduce video quality?+
Slightly — it's a full re-encode of the video, the same trade-off as Compress Video. Pick a lower resolution source if file size matters more than quality.
Caricate i miei file su un server?+
No — ogni strumento qui elabora i tuoi file interamente sul tuo dispositivo, e non viene caricato nulla su un server. L'unica eccezione sono gli strumenti IA, che inviano il testo estratto (non il file) a Claude per svolgere il loro lavoro.
C'è un limite di dimensione del file?+
Non imponiamo alcun limite artificiale, ma poiché l'elaborazione avviene nel tuo browser, i file molto grandi (oltre 500 MB o 1.000 pagine) sono limitati dalla memoria del tuo dispositivo, non da noi.
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