Maskelyne

Maskelyne converts video and audio files on your Mac. Drop in a clip, pick a format, and it uses your Mac's own media engine to do the work — no upload, no account, no sign-in. • Convert between MP4, MOV, M4V and more • Extract the audio track to M4A or AIFF • Remux without re-encoding when the codecs already match • Trim to a range and pick which tracks come along • Hardware-accelerated on Macs that have a media engine, with an automatic software fallback • Batch-convert whole folders Free for everyday conversions. A one-time Pro unlock adds batch folders, every output format, trimming and track selection, presets and automation — no subscription. Maskelyne collects anonymous usage and crash diagnostics to fix bugs; it never sees your media or file contents.