HDR VAE for Qwen Image 2.1 (ComfyUI port)

The original source of this model is Felldude/QWEN_2.1_HDR_VAE ; All I have done a conversion of the VAE to ComfyUI format. As this work is derived from the official Qwen Image 2.1 materials, the Qwen Research License Agreement applies; I do not impose any additional terms. Please consult the source link for full information on the model, and refer to Qwen materials for any license-related questions. In summary (Information below is partial information from the source README):

Qwen Image 2.1 HDR VAE

Fine-tuned Qwen Image 2.1 autoencoder for RGBA / HDR-oriented reconstruction.

The goal is stronger dynamic range, color volume, and detail energy for HDR-style workflows—not perfect fidelity to the source frame.

Intended use

• HDR-oriented encode/decode in Qwen Image pipelines

• Image editing / generation stacks that benefit from punchier latents

• Research on RGBA + high dynamic range autoencoders

Not intended for: archival reconstruction, metrics-maximizing ablations, or any setting where matching the input pixel-for-pixel matters more than look.

Limitations

• Will diverge from the source on sharpness, saturation, and color volume by design

• Alpha is supported; behavior on unusual alpha mattes is not heavily tuned

• Very large resolutions are memory-heavy (16× latent downscale)