Multimedia
Convert WEBM to OPUS in the local app
For audio and video, Nua Convert uses the desktop app with local FFmpeg. WEBM is the royalty-free high-compression open video format optimized by Google for HTML5 streaming. Opus is the ultra-low latency sound codec ideal for voice calls and high-quality real-time compression. The web does not simulate conversions or upload files: it takes you to the native flow to process media privately.
What is WebM?
Free multimedia video container optimized for the web by Google.
- ✓ Completely free of patents and royalties
- ✓ Excellent compression rate for web streaming
- ✓ Supports alpha channel for transparencies in video
- ✗ Incompatible with traditional offline media players and native macOS
Why convert to Opus?
Ultra-modern low-latency audio codec standard of the IETF.
- ✓ Incredible fidelity at very low bitrates
- ✓ Ideal for voice calls (Discord, WhatsApp) and live streaming
- ✓ Royalty-free
- ✗ Incompatible with the vast majority of legacy music players
Other popular Multimedia conversions
Local-First Philosophy
Your files stay at home. By pure architecture.
I designed Nua Convert with a very simple golden rule: the best way to protect your files is to never have them. That's why all processing is executed 100% in your browser using modern JavaScript, Canvas, and WebAssembly APIs.
The server only sends you the web page to load. Once you're inside, you can disconnect from the internet if you feel like it: the workspace will continue to function perfectly locally. No tricks, no catches, no strings attached.
Web vs Desktop
Use web for fast tasks. Download the App for heavy duty.
The browser is great for quick, daily tasks like optimizing a PNG, formatting code in a pinch, or compiling a fast PDF. But if you need to convert gigabytes of video, transcode entire folders of music, or compress giant files, the Nua Convert desktop app takes full advantage of every core of your processor, without the memory limits imposed by Chrome or Firefox tabs.
Nua Convert Web
Prepare file on web and process the heavy part in the app
- Selection of format WEBM to OPUS and direct route to the native app
- Real privacy: your media files are not uploaded to the browser or servers
- The desktop app works offline with local FFmpeg
- Real media transcoding within the web tab
- Mass processing (complete folders at once)
- Super-fast native conversion (up to 20 times faster)
Nua Convert Desktop
Full local power of your computer
- Ultra-fast conversion of WEBM to OPUS without browser limits
- Supports giant files (videos and audios of more than 50GB)
- Native batch processing of entire folders with one click
- Integrated hardware acceleration (GPU/graphics card)
- Total integration with your computer's context menu