About MediaVault

MediaVault is a set of 21 video and audio tools that run inside your browser tab instead of on a server. It exists because the ordinary way of doing this work — upload your file to a website, wait, download the result — asks you to hand your media to a stranger for tasks that do not require it.

The idea

Browsers became capable of real media work some years ago. FFmpeg, the tool that sits underneath most video software in existence, compiles to WebAssembly and runs at usable speed in a tab. OpenAI's Whisper speech recognition models run locally too. Once both of those are true, the upload step in a typical online video tool stops being a technical necessity and becomes just a business model.

So MediaVault does the work where the file already is. Your video is read into browser memory, processed by your own CPU, and written back to your disk. There is no upload, no queue, no copy of your footage on our infrastructure, and no retention policy to read, because there is nothing to retain.

What this buys you

  • Privacy that is structural rather than promised. Most services ask you to trust a policy. Here the file does not move, so the question does not arise.
  • No size caps. Server quotas exist because bandwidth and storage cost money. Neither applies when the work happens on your machine.
  • No watermarks. Watermarks are leverage to make you pay. Output here is exactly what FFmpeg produces.
  • No upload wait. A 2GB file begins processing immediately instead of after a 2GB transfer.

What it costs you

Being honest about the trade-off matters more than the pitch. Local processing is bounded by your device: a heavy encode on an older laptop is slower than the same job on a server farm, and very large files can exhaust browser memory. The Whisper models download once before transcription can start. And because the work happens in a tab, closing that tab mid-job loses the job.

For most everyday work — compressing a clip for Discord, captioning a video, pulling audio out of an interview — the trade is worth it. For a four-hour 4K render, a desktop application is still the better tool.

How the business works

The free tier covers 2 operations per day, which suits occasional use. Pro removes the daily limit and unlocks HD exports and the larger, more accurate Whisper model. That is the whole model: no ads, no selling data — there is no usage data about your files to sell, since we never see them.

Subscriptions are handled by Stripe, so card details are never touched by us. There is a 30-day money-back guarantee, described on the refund policy page.

Contact

Questions, bug reports and refund requests go to support@getmediavault.com. More detail on the contact page.