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RUDRADesktop app · v1.2.0

SDR in. HDR out.

Turn SDR images and footage into HDR. Reconstruct, grade and export in one desktop app.

Download RUDRA Read the user guide

We email you one link with every build: Mac, Windows and source.

RUDRA on macOS with a split-view HDR edit of a cow in a fieldRUDRA splash screen
RUDRA on macOS
1.2.08 November 2026
Windows + macOSDesktop downloads
LinuxBuild from source
Apache 2.0Free for commercial use

What it does

Built for HDR work.

01

Reconstruct and grade

Adjust recovery strength, compare results, and review highlights with scopes and false colour.

02

Images and footage

Work with stills, image sequences and movies in a native desktop workspace.

03

Deliver your master

Export ACES 2065-1 EXR sequences, HDR10, HLG or ProRes 422 HQ.

How it works

From SDR to HDR.

An SDR image can lose highlight detail through clipping. Expanding its brightness alone cannot restore that detail.

RUDRA uses HDR training references to infer plausible highlights. Reconstruction estimates missing detail rather than recovering a unique original scene.

SCENE LUMINANCE →CLIP: 1.0RUDRASDR MASTER
Everything the SDR master folded onto 1.0 is what RUDRA has to infer.

Results

Before and after.

Drag each divider or use the arrow keys. Source on the left, RUDRA on the right.

01 · Table Mountain, sun on the horizon
Source plate: the sun is a flat pale patch in the skyAfter RUDRA: the sun disc and flare are reconstructedSourceRUDRA

The reconstructed result adds a defined sun disc and flare while retaining foreground detail.

02 · Hillside road at dusk
Source plate: the dusk sky is a flat grey fieldAfter RUDRA: cloud structure and warmth return to the skySourceRUDRA

Cloud structure and a warm horizon appear in the reconstruction while the road and foliage retain depth.

03 · Cumulus over a quarry
Source plate: bright cumulus tops merged into one white massAfter RUDRA: shape returns inside the bright cloudSourceRUDRA

The reconstruction adds shape within bright clouds while retaining blue in the sky.

Download

Get RUDRA 1.2.0.

One button for every platform. Enter your email and we send a single message with all the downloads, the checksums and the user guide.

Download RUDRA Release notes

The builds are not code-signed on Windows or notarised on macOS yet; the user guide shows how to open them. The code is Apache 2.0 and free for commercial use. Each model states its own licence in the app before you download it; see the model terms.

In your email

  • macOSDMG · Apple silicon · macOS 13 or later
  • Windows installerx64 · Windows 10 or 11
  • Windows portableZIP · x64
  • LinuxSource and build instructions
  • Also includedSHA-256 checksums · user guide

Learn

Learn RUDRA.

Install the app, make your first HDR image, and learn how to export your work. The guide also covers model training and common questions.

Read the user guide Your first render Report an issue

Download RUDRA 1.2.0

Where should we send your downloads?

We email you one message from research@fxtdstudios.com with a personal link to RUDRA, links for every other platform, the checksums and the user guide.

We use your email to send the download details, and release updates only if you tick the box and confirm. Cloudflare checks submissions for spam. Every update email has a one-click unsubscribe link.