Your files stay on your Mac.
Converting AVI to WAV extracts the audio track from the video container and writes it as uncompressed PCM. The audio data is preserved exactly — no re-encoding, no generation loss. The resulting WAV file opens in any DAW, audio editor, or media player that accepts standard PCM.
Drag a single AVI or an entire folder onto Convertessa. Batch mode processes every file in one pass, writing each WAV alongside its source.
Pick WAV from the output format list. Because WAV is lossless PCM there are no quality trade-offs to configure — what was in the AVI comes out intact.
Click Convert. Convertessa strips the audio track and writes each WAV file to the same folder. Nothing is uploaded; the conversion runs entirely on 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.
No. WAV stores audio as uncompressed PCM, so no information is discarded. The audio you get out is bit-for-bit equivalent to what was inside the AVI container.
Never. Convertessa runs entirely offline on your Mac. Your files never leave the machine — there is no upload step and no internet connection required.
Yes. Drag the folder onto Convertessa or run convertessa /path/to/folder --to wav from the terminal. Each AVI is converted individually and the WAV files are saved in the same directory.