Generate Subtitles Privately with the Video Captions Generator

Take control of your social media workflow with the Local-First Video Captions Generator. Using advanced Whisper AI technology that runs directly in your browser, you can transcribe video and audio files without ever uploading them to a remote server. This ensures that unreleased products, private interviews, and proprietary clips remain 100% confidential while you generate high-accuracy .SRT files.

How to Generate Video Captions

  • 01. Select File: Drag and drop your video or audio file (MP4, MOV, MP3, WAV) into the upload zone.
  • 02. Local Transcription: The browser-based AI engine extracts and processes the audio data locally on your device.
  • 03. Review Text: Watch as the AI generates timestamps and text segments in real-time.
  • 04. Export .SRT: Download your completed subtitle file to use in Premiere Pro, DaVinci Resolve, or social platforms.

Frequently Asked Questions

Are my video files uploaded to your servers?

No. This tool uses a “Zero-Server-Load” architecture. The transcription engine is loaded into your browser, and the video file is processed entirely on your local hardware.

Which AI model does this tool use?

We utilize OpenAI’s Whisper model (via Transformers.js), which is the industry standard for high-accuracy speech-to-text transcription.

What video and audio formats are supported?

The tool supports most modern formats including MP4, MOV, WEBM for video, and MP3, WAV, and OGG for audio.

How long does it take to transcribe a video?

Processing speed depends on your computer’s CPU/GPU and the length of the video. Because it is local, it typically processes at near real-time speeds on modern devices.

Do I need an internet connection to use this?

You need an internet connection to load the tool and the AI model for the first time. Once loaded, the transcription itself can be performed offline.

Is there a file size or duration limit?

There are no hard limits enforced by us, but extremely large files may be limited by your browser’s available RAM and system resources.