Your files stay on your Mac.
iTunes M4V files bundle video and AAC audio inside Apple's container format. Converting to Ogg Vorbis pulls that audio track and re-encodes it using the open Vorbis codec inside an Ogg container. The result plays in browsers, Linux desktops, and open-source media players without any Apple dependency.
Drag one M4V file or an entire folder into Convertessa. Batch mode walks every M4V in the folder and queues them all in one pass.
Choose Ogg Vorbis from the output format list. Because Vorbis is a lossy codec you can also set quality to trade file size against audio fidelity before converting.
Click Convert. Convertessa re-encodes the audio locally and saves each .ogg file alongside the original — nothing is uploaded and no internet connection is 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.
Yes. Convertessa re-encodes the full audio track from the M4V into Ogg Vorbis. No content is trimmed or skipped during conversion.
Vorbis quality scales from lower (smaller file) to higher (better fidelity). A mid-range setting typically produces results comparable to 128–160 kbps MP3 at a smaller size. Use a higher setting when audio fidelity matters most.
Native Apple apps such as Music and QuickTime do not support Ogg Vorbis. Third-party players like VLC handle it on macOS and iOS. If you need broad Apple compatibility, converting to M4A is a better fit.