Your files stay on your Mac.
MPEG-TS (Transport Stream) bundles audio and video together for broadcast, DVR recordings, and digital captures. Converting to WAV pulls the audio track and writes it as uncompressed PCM—no lossy re-encoding, no quality trade-off. The resulting WAV file opens in any DAW, editor, or audio tool without additional decoding.
Drag one or more .ts files onto Convertessa, or point it at a folder to process every Transport Stream inside at once.
Choose WAV from the output format list. Convertessa writes standard uncompressed PCM at the source sample rate and bit depth—nothing is re-compressed.
Click Convert. Your WAV files appear in the destination folder, audio extracted and ready to use, with files never uploaded anywhere.
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.
Only if the source audio codec isn't already PCM. For common broadcast codecs like AAC or AC-3, Convertessa decodes to PCM and writes standard WAV. The output is uncompressed regardless of the source codec.
Yes. Pass a folder path with convertessa /your/folder --to wav and every .ts file inside is converted in one batch. You can also drag a folder directly onto the app window.
No. Convertessa runs entirely on your Mac—no internet connection required and no files are ever sent to a server.