Your files stay on your Mac.
Convertessa reads QuickTime MOV containers and rewrites the video stream as MPEG, producing a file that plays on a broad range of devices and media players. Set quality before converting to balance file size against visual fidelity. Everything runs locally — no upload, no internet connection required.
Drag one .mov file or an entire folder onto the Convertessa window. Batch conversion processes every file in a single pass.
Choose MPEG from the output format list. Use the quality slider to control file size versus visual fidelity before you convert.
Click Convert. Convertessa rewrites each MOV as MPEG on your Mac — no upload, no internet connection needed.
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. Pass the folder path on the command line (convertessa /path/to/folder --to mpeg) or drag the folder onto the Convertessa window. Every .mov file inside is converted in one batch.
No. Convertessa runs entirely on your Mac. Your QuickTime MOV files are read and written locally — they never leave your machine.
Before clicking Convert, adjust the quality slider in the Convertessa window. A higher quality setting preserves more detail at the cost of a larger file; a lower setting reduces file size. The --quality flag is also available on the command line.