Your files stay on your Mac.
DVD VOB files wrap MPEG-2 video, audio tracks, and subtitle streams in a disc-centric format that many modern players refuse to open. Converting to Matroska MKV moves that same content into a flexible, widely supported container without touching your source material. Convertessa runs the conversion entirely on your Mac — your files never leave your machine.
Drag one VOB file or an entire DVD folder into Convertessa. Batch mode queues every VOB file in a folder in a single pass.
Choose Matroska MKV from the output format list. Because MKV uses lossy video encoding, you can set quality here to balance file size against visual fidelity.
Click Convert. Convertessa works locally — no upload, no account, no internet connection required.
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. Matroska MKV is a multi-track container, so every audio stream and subtitle track present in your VOB file is preserved in the output.
Yes. Because MKV uses lossy video encoding, Convertessa lets you set a quality level before converting. Higher quality produces a larger file; lower quality shrinks it at the cost of some detail.
Yes. Drop the entire DVD folder into Convertessa, or point the CLI at the directory, and every VOB file inside is queued for batch conversion in one pass.