Your files stay on your Mac.
Convertessa reads the audio tracks in your MPEG-TS transport stream files and rewraps them into Apple's Core Audio Format (CAF) container. The source .ts files are processed directly on your Mac — no upload, no network connection needed. Batch mode handles whole folders in a single pass.
Drag one .ts file or an entire folder into Convertessa. Batch mode queues every MPEG-TS file it finds and processes them together.
Pick Apple CAF from the output list. Convertessa will rewrap the audio tracks from each transport stream into a .caf file.
Click Convert. Your .caf files are written to the destination folder. The original .ts files are left untouched.
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.
Convertessa rewraps the audio from the transport stream into the CAF container without applying additional re-encoding to the audio data.
Yes. Drag a folder onto Convertessa or run convertessa /path/to/folder --to caf from the command line to convert every MPEG-TS file in one pass.
CAF (Core Audio Format) is Apple's native audio container for macOS and iOS. It supports large file sizes beyond the 4 GB AIFF/WAV limit and is the preferred input format for Logic Pro, GarageBand, and the Core Audio framework.