Your files stay on your Mac.
Convertessa rewraps your MPEG files into an MPEG Transport Stream (.ts) container — the format required by broadcast pipelines, media servers, and streaming toolchains. Audio and video are re-encoded into the TS container at the quality level you choose. Every step runs locally; no file ever leaves your Mac.
Drag one .mpeg file or an entire folder onto Convertessa. Batch mode processes every file in a single pass.
Choose MPEG-TS from the output format list, then set your preferred quality level before converting.
Click Convert. Convertessa encodes each file locally and saves the .ts output to the folder you specify.
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 video and audio streams into the MPEG Transport Stream container. Use the quality setting to control output fidelity.
Yes — drop the folder onto Convertessa, or run convertessa *.mpeg --to ts in your terminal to convert every .mpeg file in the current directory at once.
No. Convertessa runs entirely on your Mac. Files are never sent to a server or external service.