Your files stay on your Mac.
Converting an OGV file to MKA extracts the audio stream from the Ogg container and packages it inside a Matroska audio file. Matroska carries richer metadata and plays back on a wider range of software than bare Ogg. Set quality to tune the output, then convert entire folders in one pass.
Drag one OGV file or an entire folder into Convertessa. Batch mode processes as many files as you need without extra steps.
Pick MKA from the output list. Set quality to balance audio fidelity against file size.
Click Convert. Convertessa writes an MKA file alongside each original. No upload, no internet connection required — everything stays 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.
Yes. Convertessa encodes the audio into the Matroska container, so the quality setting you choose directly affects the result. A higher value preserves more detail; a lower value produces a smaller file.
Yes. Drop a folder onto Convertessa or run convertessa *.ogv --to mka in the terminal. Each OGV file is converted and saved as a separate MKA file.
No. Convertessa runs entirely on your Mac. Your OGV files never leave the machine — there is no upload step and no internet connection required.