Your files stay on your Mac.
DVD VOB files store the raw video and audio streams from a disc. Converting to MP3 extracts the audio track and writes it as a standalone file you can play on any device or player. The entire process runs locally on your Mac—no uploads, no internet connection required.
Drag one VOB file or an entire folder of VOB files onto Convertessa. Batch mode processes every file in a single pass.
Choose MP3 from the output list. Because MP3 is a lossy format, you can set quality to balance audio detail against file size before converting.
Click Convert. Convertessa extracts the audio track from each VOB file and writes an MP3 beside the original. Files never leave your Mac.
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.
Yes. Convertessa extracts the complete default audio stream from the VOB container and writes it to MP3. No trimming or skipping occurs.
Yes. MP3 is lossy, so Convertessa lets you set quality before converting. Higher quality preserves more detail; lower quality produces a smaller file.
No. Convertessa runs entirely offline. Your files never leave your Mac—conversion happens locally with no internet connection needed.