Your files stay on your Mac.
MXF is a professional container used by broadcast cameras and editing suites to wrap video and audio together. Converting to FLAC extracts the audio track as a lossless file — full broadcast quality, no re-encoding artefacts. The conversion runs entirely on your Mac; files never leave your device.
Drag one MXF clip or an entire footage folder into Convertessa. Batch mode processes every MXF in the folder in one pass.
Choose FLAC from the output list. FLAC is lossless, so the audio is preserved exactly as recorded — no quality setting required.
Click Convert. Convertessa extracts the audio track from each MXF and writes a matching FLAC file. Your originals are 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.
No. FLAC is a lossless codec, so the audio data from the MXF is preserved bit-for-bit. There is no re-encoding step that could introduce artefacts or reduce quality.
Yes. Drag the entire footage folder into Convertessa, choose FLAC, and every MXF in the folder is converted in one batch. From the command line, run convertessa ./footage/ --to flac.
No. Convertessa runs entirely on your Mac. Your footage never leaves your device — no upload, no cloud processing, no account required.