Lumen is a Mac cinema player for MKV remuxes. It finds the folders that hold your films — external drives included — and plays them as they were mastered. $2.99 once. No account, no subscription, no conversion.

PICTURE
• Hardware decode (VideoToolbox, zero-copy) into a 16-bit float pipeline
• EWA Lanczos upscaling and Mitchell downscaling in linear light
• HDR10 and Dolby Vision use the file’s metadata peak, not a per-scene measurement. The built-in display passes the file through; a TV over HDMI gets the signal untouched
• 24p stays 24p: an external display switches to a multiple of the film’s frame rate and switches back when you’re done
• IMAX 1.43 and 1.90 shown at their native aspect. Nothing is cropped

SOUND
• HDMI takes the device exclusively. AC3 and DTS bitstream; TrueHD and DTS-HD decode to lossless 7.1 LPCM at 24-bit
• Forced subtitles appear only when the audio already matches your language

LIBRARY
• Finds your films on every drive and watches for the disk you plug in
• Stills from a mid-film keyframe of the file itself; posters from a sidecar next to it or a title match
• Resume, Continue Watching, search by title, year or format (“Atmos”)
• Press I during playback for the stats plate: decoder, cadence, dropped frames, colour, sound. Every number comes from the engine

Built on libmpv (MPVKit). Apple silicon, macOS 14 or newer. MKV, MP4, MOV.

If Lumen will not open your files, reply to your Whop receipt for a refund. One payment; there is nothing to cancel.