Your files stay on your Mac.
DVD VOB files pack video, audio, and subtitle streams into a single container. Converting to AU strips everything except the audio track and writes it as a standard AU file. The conversion runs entirely on your Mac—no file is ever uploaded.
Drag one VOB file or an entire disc folder into Convertessa. The app reads the audio stream from every file you add.
Pick AU from the output format list. Convertessa extracts the audio track and writes it as a standard AU file, preserving the original sample rate and channel layout.
Click Convert. Convertessa processes each file locally and saves the AU output alongside the originals—or to a folder of your choice.
Images, audio, video, documents, archives and eBooks — all converted natively, right on your Mac.
Pick a format you have — see everything Convertessa can turn it into.
Convert hundreds of files at once with per-type group defaults and individual overrides.
First-class support for HEIC, AVIF and WebP — encode and decode, both ways. Read JPEG XL and a dozen more modern formats too.
Drop files anywhere on the window. Native, instant, and exactly what you’d expect on a Mac.
Dial in compression, resolution and bitrate. Keep originals pristine or shrink for sharing.
Never overwrite a file by accident. Convertessa appends safe suffixes automatically.
Every job is logged locally. Re-run a previous conversion or revisit recent outputs in a click.
Bundle your converted files straight into a single ZIP, TAR or 7z — packaged and ready to share the moment a job finishes.
Right-click any file in Finder and choose Convert. A Quick Action handles it on the spot — no need to open the app first.
Shrink Convertessa to a tidy mini window that tucks into a corner — just a drop zone and a format picker for quick, one-off conversions.
No cloud. No account. No upload. Every conversion happens entirely on-device, using the power already in your Mac. What you convert is nobody’s business but yours.
Script conversions, wire them into your build, or batch a folder from the terminal. The same engine, no GUI required.
Read the full CLI documentation →Shrink Convertessa down to a small, focused window — drop, convert, done, with your recent conversions one click away.
macOS 14+ · Apple Silicon & Intel
New formats, new features, and fixes — every release, on the record.
AU is an uncompressed container, so Convertessa writes the audio stream without re-encoding it. The sample rate, bit depth, and channel count from the source VOB are preserved exactly.
Yes. Drop a folder of VOB files onto Convertessa or pass a directory path to the CLI. Each file is converted independently and saved as its own AU output.