OneAudio Studio bundles 11 audio and video processing tools in a single page — all running in your browser, no installation needed, no usage limits, no watermarks. From extracting MP3 from a YouTube video, trimming a ringtone, creating Sped-Up Nightcore remixes, removing vocals for karaoke, to normalizing podcast loudness — just drag, drop, wait a few seconds, download.

Processing happens on a dedicated server running FFmpeg (Intel i5 12400F + 8GB RAM), with BullMQ queueing so throughput stays stable when many users upload at once. Every uploaded file is auto-deleted after export or within 1 hour — no storage, no third-party sharing.

Why pick OneAudio?

100% free

No usage caps, no watermark, no sign-up required.

Private

Files auto-delete within 1 hour. No personalized ads, no tracking.

11 tools in 1

Replaces a whole suite of apps like Audacity + iMovie + MP3Cutter with a single URL.

Vietnamese & English UI

Native Vietnamese strings and clear technical labels — no machine translation.

Server-side speed

Multi-threaded FFmpeg processes 3-5× faster than browser-side alternatives.

Up to 200MB files

Takes long videos, long podcasts, full albums without truncation.

Frequently asked questions about OneAudio Studio

Is OneAudio really free?

Yes, 100%. No paid tier, no watermark, no cap on jobs. Server cost is covered by banner ads that stay out of your way.

Are my files stored somewhere?

No. Both the uploaded source and the generated output are auto-deleted right after export. A scheduled sweeper ensures no leftovers after 1 hour.

What's the file size limit?

200MB per upload — enough for a 1-hour HD video or a 3-hour high-quality podcast.

Does it work on mobile?

Yes. The UI is fully responsive on Chrome, Safari, Firefox, and Cốc Cốc mobile. Prefer Wi-Fi for large uploads.

Is there a rate limit?

20 jobs per hour per IP to prevent abuse. If you hit the cap, wait an hour or switch networks.

Is output quality comparable to pro software?

For common use (extract MP3, trim, voice change, loudness normalize) — 192kbps MP3 output matches Audacity/iMovie quality. For music mastering, you still need a DAW like FL Studio.

Can I process multiple files at once?

The Merger tool takes many files at a time. Other tools handle one per job — the queue processes them back-to-back if you hit upload in quick succession.