DiffuseStyleGesture is the IJCAI 2023 work Stylized Audio-Driven Co-Speech Gesture Generation with Diffusion Models. Motius integrates the released DiffuseStyleGesture+ BEAT checkpoint, which adds text semantics, speaker ID, 30 seed frames, and rolling 150-frame diffusion windows.

The exact original-format WavLM checkpoint is required. The Transformers conversion is not used: on the released DSG+ parity clip its WavLM block has only 0.96376 cosine similarity, while the original checkpoint reproduces the released features at 0.9999999999 cosine similarity.

The FastText source is the official crawl-300d-2M.vec.zip. The release contains the 790 vectors used by the fixed benchmark population as beat2_speaker2_fasttext_vocab.npz (one source token, berties, is OOV). The DSG+ checkpoint and source use MIT terms; this compact vector subset retains FastText's CC-BY-SA-3.0 terms.

Build the official conditioning features, then run inference:

DSG+ writes a native 30 FPS, Y-up BEAT BVH. Motius applies the public FreeTalker BEAT-to-SMPL-X joint map with identity axes and without FreeTalker's historical six-frame downsample, which is only appropriate for original 120 FPS BEAT files.

Conditioning stays on the official audio-feature clock. The 15 benchmark WAVs produce 6–16 more feature frames than their paired SMPL-X references; Motius does not interpolate or time-warp those features. It runs diffusion for the native feature length and crops only the final motion to the reference length.

The uTMR columns consume only canonical 30 FPS SMPL-22 joint positions. They ignore text and expression coefficients; the official metric FK explicitly sets the SMPL-X translation vector to zero. Each long clip is split into balanced windows no longer than 20 seconds; embeddings are L2-normalized only for FID. Paired distance and embedding diversity use native uTMR features.

These values do not reproduce the DSG+ paper's FGD 14.461: that number uses the GENEA/Talking-With-Hands challenge autoencoder and test population, whereas this row uses the fixed Motius BEAT2 speaker-2 SMPL-X protocol. The upstream authors also document that the manual BVH-to-SMPL-X conversion can depress motion realism on BEAT2, even for reconstruction. Accordingly, this released row is a verified cross-protocol Motius result rather than a paper-number claim. The exact GENEA autoencoder checkpoint and Table 1 split were not released, so the public artifacts are insufficient for an exact 14.461 reproduction.

Open the audio-synchronized 15-case Three.js comparison. It provides shared camera and timeline controls for BEAT2 GT, Language of Motion, EMAGE, and DiffuseStyleGesture+, plus native SMPL-X NPZ downloads.