Your files stay on your Mac.
MXF is a professional container used by broadcast cameras and post-production suites; AVI is a widely supported wrapper that opens in virtually any video player or editor. Convertessa reads the MXF container, decodes its streams, and re-encodes them into an AVI file on your Mac—no upload, no account required. Set the output quality to balance file size against visual fidelity.
Drag one MXF clip or an entire camera-card folder onto Convertessa. The app queues every MXF file it finds automatically.
Pick AVI from the output format list. Because AVI uses lossy encoding, you can set quality to suit your workflow—higher values retain more detail; lower values produce smaller files.
Click Convert. Convertessa processes each file locally; the resulting AVI files land in your chosen output folder and your originals stay untouched.
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 removes embedded metadata during conversion, so the output AVI contains only the video and audio streams—no production notes, camera identifiers, or other fields carried by the original MXF container.
Yes. Drop the folder onto Convertessa or pass the folder path to the CLI: convertessa ./footage/ --to avi. Every MXF file inside is queued and converted in one run.
Yes. Convertessa preserves the source resolution exactly—no resampling occurs during the MXF-to-AVI conversion.