Your files stay on your Mac.
MXF is the broadcast and ingest container used by professional cameras and tape decks. Converting to Matroska MKV rewraps those streams into a widely-supported open format that plays in virtually every desktop player. Convertessa does the work locally — your footage never leaves your Mac.
Drag one clip or an entire production folder onto the Convertessa window. All MXF files in the folder are queued for batch conversion automatically.
Pick Matroska MKV from the output format list. Because MKV supports lossy encoding, you can set quality before converting — or leave the default to rewrap without re-encoding.
Click Convert. Convertessa processes each file on your Mac, preserves the original resolution, and saves each MKV alongside the source.
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.
Not by default — Convertessa rewraps the existing streams into the MKV container without touching the picture data. If you want to set quality and re-encode, adjust the quality slider before clicking Convert.
Yes. Matroska MKV natively supports multiple audio and subtitle tracks, so every stream carried in your MXF file is preserved in the output.
Yes — drop a folder onto Convertessa or pass the folder path on the command line (convertessa /path/to/folder --to mkv) and every MXF file inside is converted in one batch.