Your files stay on your Mac.
iTunes M4V files bundle video and audio in a single container. Converting to WAV strips the video stream and writes the audio track as uncompressed PCM — the format expected by audio editors, DAWs, and broadcast toolchains. Every conversion runs locally; your files never leave your Mac.
Drag one M4V file or an entire folder into Convertessa. Batch mode processes every file in the folder in one pass.
Pick WAV from the output format list. Convertessa targets the standard PCM WAV spec used by audio editors and DAWs.
Click Convert. Convertessa extracts the audio track and writes uncompressed WAV files to your chosen output folder. 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.
WAV stores audio as uncompressed PCM, so no additional quality loss is introduced during extraction. The output faithfully represents whatever audio was encoded in the original M4V.
Yes. Drop a folder onto Convertessa or run convertessa /path/to/folder --to wav in the terminal. Every M4V in the folder is converted in a single pass.
Completely. Convertessa runs offline — your M4V files are processed on your Mac and never uploaded to any server.