LTX releases HDR beta with scene-linear EXR output and ComfyUI support
Posts say LTX HDR can generate HDR video or convert SDR footage to scene-linear EXR through API, ComfyUI and Hugging Face. The beta matters because EXR output is described as workable in Resolve and Nuke, but the release is still tagged v0.9.
TL;DR
- hasantoxr's launch thread says LTX HDR ships with two workflows: HDR video generation through an API and an open source SDR-to-HDR path that converts existing 8-bit footage to EXR.
- According to hasantoxr on the output format, the output is scene-linear EXR in Float16 with about 20-bit effective range, which is the format used across DaVinci Resolve, Nuke, Flame, and After Effects.
- hasantoxr's workflow list frames the point clearly: higher resolution was not the missing piece for pipeline-ready AI video, dynamic range was.
- Availability is already spread across multiple surfaces, with hasantoxr's feature rundown listing API, ComfyUI, and Hugging Face support, while hasantoxr's beta note says the open release is tagged v0.9 and deployable on-premise.
You can jump straight to the Hugging Face model page, watch hasantoxr's demo clip and the follow-up clip, and see that the interesting part here is not just "HDR" as a buzzword. The release is tied to EXR output, ComfyUI access, and a format that hasantoxr's format post says drops into finishing tools the way VFX pipelines already expect.
Two paths
LTX HDR arrives as two separate products in one beta. hasantoxr's breakdown says one path is HDR generation through the API, specifically in a video-to-video setup. The other is an open source SDR-to-HDR upgrade for footage you already have.
That split matters because it covers both ends of the workflow: making new clips and salvaging old ones. The public entry point for the open release is the Hugging Face model page, while hasantoxr's post also names ComfyUI as a supported surface.
Scene-linear EXR
The technical hook is the output format. According to hasantoxr's post about the file format, LTX HDR produces scene-linear EXR in Float16 with roughly 20-bit effective range.
That is a much more pipeline-native target than ordinary 8-bit delivery files. hasantoxr's format post specifically names Resolve, Nuke, Flame, and After Effects as tools built for this kind of material, which is why this beta reads more like a finishing experiment than another social-video demo.
Finishing workflows
hasantoxr's list of use cases lays out four concrete places LTX HDR could slot in:
- Broadcast grading
- Shots that sit next to 32-bit CGI and 3D renders
- HDR LED volume playback
- Finishing work beyond previs
That is the interesting threshold here. Most AI video launches still center on prompt quality or resolution. hasantoxr's launch post and the EXR format post instead center highlight rolloff, shadow detail, and whether the footage can survive a real grade.
Beta status
The release is still early. hasantoxr's beta caveat says the Hugging Face drop is version 0.9, open source, and deployable on-premise.
The same post also adds one more practical detail: the EXR output is already loading into Resolve and Nuke as expected, while a fuller ComfyUI-to-Resolve walkthrough is still "coming next" in hasantoxr's follow-up. That leaves LTX HDR in an unusually useful place for a beta, with enough surface area to test inside an actual post pipeline, not just in a browser demo.