Your files stay on your Mac.
MXF is the professional container used by Sony, Panasonic, and Ikegami broadcast cameras — rarely supported by consumer editors, web platforms, or mobile devices. Convertessa re-encodes each clip into MP4, a format recognised everywhere. Every file is processed locally on your Mac; nothing is uploaded.
Drag a single clip or an entire folder of MXF footage into Convertessa. The app queues every file automatically.
Choose MP4 from the output list. Use the quality slider to balance visual fidelity against file size.
Click Convert. Convertessa encodes every clip offline at full resolution — 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.
MXF (Material eXchange Format) is a broadcast-grade container designed for professional ingest pipelines. Consumer and prosumer tools — Final Cut Pro, DaVinci Resolve's free tier, browsers, and phones — either refuse MXF entirely or support only a subset of its variants. Converting to MP4 gives you a container every tool understands.
MP4 uses lossy compression, so the conversion does re-encode the video. Convertessa's quality slider lets you choose how aggressively to compress — higher quality settings preserve more detail at the cost of a larger file. The original MXF is left untouched.
Yes. Drop the whole folder into Convertessa or run convertessa /card/*.mxf --to mp4 in the terminal. Every clip is queued and converted in a single pass — no need to open files one by one.