Transcribe Video Without Uploading It
Extract the audio from your video locally in your browser — your raw file never leaves your device. Free, no sign-up, no account.
Upload an audio or video file
or click to browse — MP3, WAV, MP4, MOV, and more
Up to 60 minutes • 5 free transcriptions per day • Compressed locally before upload
🛡 Local extraction
The audio track is pulled out in your browser using the captureStream API. The video file itself is never sent anywhere.
🔒 No account, no data trail
No sign-up means no account to be breached, no profile that links your recordings to you.
📄 Export subtitles
Download as TXT, SRT, or VTT — ready for YouTube, Vimeo, or any editor.
Why "without uploading" matters
Most transcription tools work in the cloud: you upload the file, it is processed on their servers, and the recording sits in their storage. University security guidance for transcription services highlights three concrete risks with that model:
- Storage risk. Providers keep recordings on their servers, and those repositories of nonpublic data are attractive targets for attackers.
- Sharing risk. Recordings may be shared with third parties according to the service's terms of use and privacy policy.
- Training risk. AI transcription services "almost certainly" use the audio you upload to improve their models, in the words of a Columbia University data-science researcher — a particular concern when recordings contain identifiable or protected information. A 2025 class action (Brewer v. Otter.ai) alleged exactly this behavior without adequate consent.
AudioTextFast's approach: your video is decoded entirely in your browser. The raw file never leaves your device, so none of those three risks apply to it. Only a small extracted audio track is sent for AI transcription — and there is no account, so no stored profile ties your recordings to you.
For recordings covered by an NDA — legal consultations, medical discussions, research interviews — uploading the raw recording to a cloud service counts as disclosing it to a third party under most confidentiality agreements. Keeping the video on your device sidesteps that question entirely.
Frequently asked questions
Is my video actually never uploaded?
Correct. The video file is decoded entirely in your browser using the built-in captureStream API. Only the extracted audio is sent for transcription — the raw video never leaves your device.
What are the privacy concerns with cloud transcription?
University security guidance warns that cloud transcription services store recordings on their servers, may share them with third parties under their terms of use, and some services use customer audio to train AI models. A 2025 class action (Brewer v. Otter.ai) alleged a major provider trained models on recorded meetings without adequate consent.
What is a safe and secure way to convert audio to text?
The safest option is processing that keeps your file on your device as much as possible. AudioTextFast extracts the audio track locally in your browser, so your raw video is never uploaded anywhere. For sensitive recordings (legal, medical, research), local extraction removes the exposure risks of uploading the full file.
Does uploading audio to a transcription service violate an NDA?
Under most NDA language, uploading a recording to a cloud service counts as disclosing it to a third party. It is allowed only if your agreement permits cloud subprocessors or you have written consent. Keeping the raw recording on your device avoids this question entirely for the video file itself.
How long does transcription take?
Audio extraction runs in real time, then AI transcription takes seconds. Videos up to 60 minutes are supported.