Your files stay on your Mac.
MXF is the container format used by broadcast cameras, tape decks, and professional editing suites. Converting to AAC extracts the audio track and encodes it as a compressed, widely-supported file. Convertessa does the whole job on-device — nothing is sent to a server.
Drag one MXF clip or an entire folder of footage into Convertessa. The app handles MXF from broadcast cameras, NLEs, and tape-transfer workflows without any pre-processing.
Choose AAC from the output format list. Set quality to match your delivery target — higher quality preserves more detail; lower quality produces smaller files.
Click Convert. Convertessa extracts the audio track from each MXF and writes an AAC file alongside the original. Your footage never leaves 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.
No. Convertessa runs entirely on your Mac. MXF files — which often contain sensitive broadcast or production material — never leave your machine.
Yes. Drop a folder onto Convertessa or run convertessa ./footage/ --to aac in the terminal to batch-convert every MXF file in one pass.
For voice or dialogue, a medium quality setting keeps file sizes small without noticeable loss. For music or broadcast audio, choose a higher quality setting to preserve more detail in the mix.