Your files stay on your Mac.
MPEG-TS is a broadcast container that multiplexes audio and video into a single stream. Convertessa pulls the audio track out of the container and writes it to AIFF, an uncompressed Apple audio format. The whole process runs on your Mac — no upload, no cloud, no internet required.
Drag one .ts file or an entire folder of MPEG-TS recordings onto Convertessa. Batch conversion processes every file in one pass.
Choose AIFF from the output list. Because AIFF is lossless and uncompressed, there are no encoding settings to configure.
Click Convert. Each extracted audio file lands beside its source, ready to open in any DAW or audio editor.
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. AIFF is an uncompressed format, so the audio extracted from your MPEG-TS file is stored at full fidelity without any lossy encoding step.
Yes. Drop a folder onto Convertessa and every .ts file inside is converted to AIFF in one pass. From the command line, run convertessa /folder --to aiff.
Yes. Convertessa removes embedded metadata from the output AIFF file during conversion.