Your files stay on your Mac.
A DVD VOB file bundles video, audio, and subtitles into a single stream. Converting to FLAC peels out the audio track and encodes it losslessly — the decoded waveform is bit-for-bit identical to what was pressed onto the disc. Drop individual chapters or a whole VIDEO_TS folder; Convertessa processes every .vob it finds without uploading a single byte.
Drag one .vob file or an entire DVD folder into Convertessa. The app discovers every VOB in the folder automatically.
Pick FLAC from the output format list. Convertessa will extract the audio stream from each VOB and encode it as a lossless FLAC file.
Click Convert. FLAC files appear alongside the originals, preserving the original sample rate and bit depth. 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.
No. FLAC is a lossless codec, so the decoded audio is bit-for-bit identical to the original DVD audio track.
Yes. Point Convertessa at a VIDEO_TS folder and it converts every .vob file in a single pass — no need to process chapters one by one.
Yes. Convertessa removes embedded metadata tags from the source during conversion, so the resulting FLAC files are clean.