Your files stay on your Mac.
AVI is a container that wraps video and audio tracks together. Converting to Ogg Vorbis pulls out the audio stream and re-encodes it using the open, royalty-free Vorbis codec. The output is a compact audio file with no video payload, playable in every modern browser and media player.
Drag one AVI file or an entire folder into Convertessa. Files never leave your Mac — no upload, no cloud.
Choose Ogg Vorbis from the output list. Because Vorbis is a lossy format, you can set quality to balance file size against audio fidelity before converting.
Click Convert. Convertessa extracts and re-encodes the audio track and writes the Ogg files alongside the originals.
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. Ogg Vorbis is a pure audio format. Convertessa extracts the audio track from the AVI container and encodes it as Vorbis — the video stream is not carried over.
Yes. Drop a folder onto Convertessa, or run convertessa /path/to/folder --to ogg in the terminal. Every AVI file in the folder is processed in one pass.
Ogg Vorbis uses lossy encoding, so higher quality preserves more detail at the cost of a larger file. Set quality once before converting — it applies to every file in the batch.