Your files stay on your Mac.
DVD VOB files carry the video, audio, and subtitle streams packed into the structure used by standard-definition DVDs. Converting to AVI repackages that content into a container compatible with virtually every media player and editing tool. Convertessa handles the entire process on your Mac — no file ever leaves your machine.
Drag one or more VOB files — or an entire folder — onto Convertessa. Batch conversion processes every file in one pass.
Open the output format list and Choose AVI. Set quality to balance visual fidelity against file size.
Click Convert. Convertessa runs entirely offline; the resulting AVI files land in the folder you specify, resolution preserved.
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. Drop the entire folder onto Convertessa and it processes every VOB file in one batch run. Output AVI files are written to a destination folder you specify.
Yes. Convertessa runs entirely offline — no files are uploaded to any server. The conversion happens locally on your Mac.
Yes. AVI is a lossy format, so Convertessa lets you set quality before converting. A higher setting preserves more detail at the cost of a larger file; a lower setting reduces file size with more compression applied.