Lumio HDR Studio

Beyond Dynamic Range.

Your old videos were always this beautiful.
You just couldn't see it yet.

California Beach Entry level drone, 8-bit Rec.709

Your memories, seen in a new light.

Drone footage, iPhone slow motion, films finished decades ago.
Whatever the source, Lumio rebuilds it as a real HDR file, with highlights that reach where SDR never could.

Not a preview. The result.

What you are looking at is the finished conversion, rebuilt for every frame. Nothing is approximated and nothing is queued up to render later, whether the movie is playing, paused on a single frame, or being scrubbed. When the look is right, export to a file or save straight to Photos. A preset stores the look for later.

HDR Type

HLG or PQ. The HDR standard Lumio writes.
Peak Brightness

How bright the brightest highlights get, in nits.
Brightness

Peak Brightness only lifts the top. Brightness fills in the rest, the midtones first and most, followed by the shadows.
Contrast

Widens or narrows the gap between light and dark, without pushing past the peak you set.
Saturation

Color intensity. The one control here that does exactly what you expect.

The Lumio inspector, showing the HDR conversion controls

Four ways to look at it.

The viewing mode control above the picture

SDRThe source as it is.

SplitBoth versions at once, side by side, on the same frame.

CompareOne frame, divided by a line you drag across it.

HDRThe converted result, full frame.

Specifications

Processing	Metal accelerated. Every frame is processed in floating point and carried at 16 bits per channel, under a millisecond per frame.* * Median 0.69 ms per frame, 8 percent of the display budget, with no dropped frames over 925 frames. Measured on a MacBook Pro with M3 Pro, playing 30 fps material on a 120 Hz display.
Color science	Inverse tonemapping from Rec.709 to Rec.2020, written as PQ (HDR10) or HLG (Dolby Vision†). HDR10 files carry mastering display metadata (ST 2086) and content light level information derived from the actual conversion, not generic placeholder values. † HLG output is written with Dolby Vision Profile 8.4 metadata, which uses an HLG base layer. A player without Dolby Vision support reads the same file as ordinary HLG.
Read	MP4 and MOV files, and live streams* over HLS. * A stream is watched through the conversion as it arrives. Nothing is written to disk, so it is a way to see material rather than a way to produce a file.
Write	MP4 or MOV, in HEVC, H.264 or ProRes 422 HQ.* * HEVC and ProRes 422 HQ write 10-bit, H.264 writes 8-bit. ProRes 422 HQ writes to MOV only.
Data rate	For HEVC and H.264, chosen from the source file automatically, or set by hand between 5 and 200 Mb/s. ProRes 422 HQ targets its own.
Photos	Read from your Photos library and write back to it, either as a new movie or by modifying the original.* * Photos keeps the untouched version, so the change can be reverted.
LUT	Apply a 1D or 3D LUT before conversion, either to bring log footage back to normal or to set a creative look.
Requirements	macOS 26 Tahoe or later, on Apple Silicon.

Before you buy.

How much difference will you see?

That depends on the display in front of you, and it is worth knowing before you spend anything. A conventional backlit screen reaches around twice SDR white. An XDR panel reaches many times that. On a modest display the before and after can look almost identical, and turning your screen brightness down is what helps, because it frees up headroom for the highlights.

The file itself is correct either way. Lumio writes a real HDR file, tagged and mastered properly, and it will look right on an Apple TV, a recent iPhone or an HDR television, whether or not your Mac can show you all of it today.

Lumio measures your display and tells you where you stand.

Buy once. Own forever.

$14.99

One purchase. No subscription.

Works offline. Nothing leaves your Mac.
See the result before you export it.
Export to a file, or straight to Photos.
Free updates for the life of the app.

Requires macOS 26 Tahoe or later