EXR files for AI video compositing
EXR is an image format used in visual effects that stores a wide range of brightness and colour, often at 16 or 32 bits per channel, frame by frame. From 2 source pages, read 2026-09-25; no maker pays to be listed.
Luma's API offers native HDR generation and 16-bit EXR export, so generated shots can be composited beside live-action plates in Resolve or Nuke.
EXR matters when a shot will be graded or combined with other footage. An 8-bit video file clips highlights that an EXR keeps.
It is heavy. An EXR sequence is many times the size of the same shot as an MP4.
Among the tools read, Luma is the only one to name it on its API page.
For an AI shot to match camera footage in a grade, it needs the same headroom the camera recorded; EXR is how that headroom survives.
Ask for EXR only for shots that will be graded or composited; for the rest, a lighter file is easier to move around.
| Tool | Hook | What the documentation says |
|---|---|---|
| Luma | Hand-off | 16-bit EXR export for compositing in Resolve or Nuke |
| Luma | Formats | 16-bit EXR alongside standard video output |
| Luma | Resolution | Resolution options of 540p, 720p, 1080p and 4K for Ray 2 |
Inclusion rule. Readings from the register used on this page. Order. The order the text takes them in.
1As the documentation puts it
Native HDR Generation and 16-bit EXR Export so AI work composites alongside live-action plates in your users' Resolve or Nuke.
Luma, API page
Resolution can be 540p, 720p, 1080, 4k
Luma, API documentation: Python video generation
- Features16-bit EXR export for compositing in Resolve or Nuke
- Features16-bit EXR alongside standard video output
- Text to videoResolution options of 540p, 720p, 1080p and 4K for Ray 2
2A pipeline stage, described
Read against “EXR”, this is how SceneMixer describes the matching stage of its own pipeline:
That is SceneMixer's core design: characters live in a persistent asset library with locked reference art, and every segment that features a character is generated against those references — same face in episode 1 and episode 50.
SceneMixer, The AI Micro Drama Production Pipeline — “Can AI keep the same actors across 50 episodes?” (read 2026-10-13)
Every character gets an AI-generated full-body reference sheet at analysis time. Face and body crops from that sheet are injected into every video segment that features the character, so the same face, hair, and signature look persist across all episodes.
SceneMixer, Turn a Novel into a Video Series with AI — “How does SceneMixer keep characters consistent across episodes?” (read 2026-10-13)