We’ve turned single renders of our presenter into rigged, animated 3D characters, some through cloud services, some fully locally. This guide is the local path and its honest limits. (For the cloud path and rigging/animation, see the original 3D guide.)

The local stack

Hunyuan3D (open weights) runs image → mesh → texture on a consumer GPU: a shape stage that dreams a full 3D mesh from one photo (~40s for ~180k vertices on a strong card), then a paint stage that projects textures (~70s, ~9GB VRAM). Both drive from Python or ComfyUI-style workflows.

Plate rules (the input decides everything)

The model reconstructs what it can see and invents the rest, so:

  • Full body, neutral pose, plain background. T-pose if you’ll rig later.
  • Style survives, this is the local path’s superpower: a stylized character stays stylized (photoreal-first pipelines regularize stylized faces toward “average human” and erase your character; single-image 3D preserves the input’s look).
  • Faceless angles fail. A character-LoRA’d generator refuses to draw the back of a head, and 3D reconstruction can’t invent what your references never show. Feed front + both sides; let the model dream only the back.
  • Hair that drapes over the face becomes fused geometry, pull it back in the plate if you need clean facial topology.

The remesh reality

Raw generative meshes are dense triangle soup: fine for renders and web viewers, rough for rigging. The paint stage decimates (~40k faces) which helps, but know the ceiling: mouths are sculpted shut (no interior), and hair fuses to the head. Real lip-sync needs a viseme-capable face from another pipeline, animate generative meshes with body/head motion and handle talking elsewhere (our approach: lip-sync on video, 3D for presence).

Local vs cloud, honestly

  • Local wins: cost (free), privacy, style preservation, iteration speed on plates.
  • Cloud wins (Meshy-class services): auto T-pose from casual inputs, clean quad topology, one-click rigging + animation libraries, background removal. Our production 3D characters mostly shipped through the cloud path after local prototyping proved the look.

Pragmatic recipe: prototype the look locally for free, then spend credits once on the winner.

Engine Room series: From Zero · Edit & combine · Video · Upscale · Character pipeline