Your files stay on your Mac.
Converting iTunes M4V to MP3 pulls the audio track out of your video and encodes it as a standalone MP3 file. Convertessa runs entirely on your Mac — your videos never leave your machine. Set quality to balance fidelity and file size before you export.
Drag one M4V or a whole folder of M4V files onto Convertessa. Batch conversion processes every file in a single pass.
Choose MP3 from the output format list. Use the quality slider to control the audio fidelity of the exported files.
Click Convert. Convertessa extracts and encodes the audio offline — no upload, no account, no wait for a server.
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.
MP3 is audio-only, so Convertessa extracts the audio track from your M4V and discards the video. The output is a standalone MP3 file.
Yes. Drop a folder onto Convertessa or run convertessa ./folder --to mp3 in the terminal. Every M4V in that folder is converted in a single pass.
Use the quality slider before clicking Convert. Higher quality produces a larger file; lower quality reduces size. The setting applies to every file in the batch.