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