Runway Ruby converts SDR video to 16-bit HDR
Runway released Ruby to convert uploaded or generated SDR clips into 16-bit HDR. Max and Enterprise users can export clips up to 30 seconds as EXR sequences, ProRes, or HEVC files.

TL;DR
- Ruby turns SDR footage into an HDR deliverable after the shot exists: Runway's launch post says it accepts uploads and Runway-generated video, with 16-bit HDR available through EXR sequences.
- The 16-bit headline has a format split: Runway's availability post separates 16-bit EXR sequences from 10- and 12-bit ProRes and HEVC exports.
- Existing uploads and generated clips qualify only up to 30 seconds under Runway's launch post.
- Max and Enterprise are the initial access tiers, according to Runway's availability post.
The launch clip uses a side-by-side SDR/HDR comparison instead of a new generated scene. An independent release-note tracker also lists Ruby as an API operation, including a /v1/video_to_hdr route.
Ruby
Runway positions Ruby as a conversion model: the product announcement says it takes SDR video to HDR, whether the source was uploaded or made earlier in Runway. The useful shift is that HDR delivery is detached from the model that created the shot.
HDR exports
The availability post gives the export inventory:
- 16-bit EXR sequences.
- 10- and 12-bit ProRes.
- 10- and 12-bit HEVC.
- BT.2020 color with PQ or HLG.
Ruby's 16-bit specification belongs to its EXR sequence option; Runway lists separate 10- and 12-bit specifications for movie-file exports. The OpenEXR technical introduction defines HALF, its standard regular-image data type, as 16-bit floating point. Apple's ProRes white paper describes that codec family as a professional post-production format.
Every Runway source up to 30 seconds
Ruby accepts any existing upload or generated output, with a 30-second cap, according to the launch post. A Runway follow-up adds that the HDR option works with every video model in Runway.
Max and Enterprise
Ruby is available now on Max plans and Enterprise, Runway's availability post says. That same post is the public source for the codec, bit-depth, color-space, and transfer-function options.
API endpoint
Runway's API documentation frames the developer product as a way to bring its models into apps and platforms. The independent release-note tracker lists Ruby at /v1/video_to_hdr, with HDR10 10-bit HEVC as the default, HLG as an alternate, and ProRes or OpenEXR options.
The tracker says the API operation preserves source pixels and audio.