Convert raw AVCHD camcorder footage into an editable format. Every conversion runs locally on your Mac — your MTS files are never uploaded.
macOS 14 or later · Apple silicon · Free to try
MTS is the raw AVCHD format used by many camcorders. MP4 is the universal video format that plays on virtually every device. Convert raw AVCHD camcorder footage into an editable format.
PrivateRemix handles the MTS-to-MP4 conversion in a couple of clicks, with the result saved right next to your original file.
Unlike free online converters, PrivateRemix has no server. Your MTS files stay on your Mac — no upload, no cloud, no account.
Drag a MTS file into PrivateRemix, or pick one from your Mac.
Select MP4 from the formats PrivateRemix offers for your file.
The new MP4 appears next to the original. Nothing leaves your Mac.
The change is minimal. Both formats are compressed, and PrivateRemix converts at a high quality setting so there is no visible or audible drop for everyday use.
MTS/AVCHD footage isn't accepted by many editors and players. Converting to MP4 makes camcorder footage easy to edit and share.
For sharing and playback, yes — MP4 is supported by nearly every phone, TV, browser and editor, which is why it's the safe default.
No. PrivateRemix runs entirely on your Mac using its own processor. Your MTS files never leave the device — there is no server to upload to, and it works fully offline.
Yes. Drop in a batch of MTS files and PrivateRemix converts them all locally, saving each new MP4 next to its original.
Free to try. macOS 14 or later, Apple silicon.