Maskelyne
Convert video & audio, fast
Only for Mac
Free · In‑App Purchases
Mac
Convert video and audio on your Mac — MP4, MOV, M4A and more. Hardware-accelerated, batch, and entirely local. No upload, no account.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Maskelyne can now be driven from Shortcuts — four actions (Convert Video, Extract Audio, Apply Conversion Preset and Trim Media) that take files and hand files back, so they chain with the rest of your shortcut. Presets now export to a file and import on another Mac. Plus your own filename template with a choice of what happens when a name is already taken, and a fix for portrait video that came out sideways once you touched an encoder setting.
The developer, Greg Raine, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Greg Raine
- Size
- 4.9 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
English and 4 more
- English, French, German, Japanese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Maskelyne Pro $5.99
- Copyright
- © 2026 Greg Raine