face_preservation

tags:

• text-to-video
• video-to-video
• comfyui
• ltx-video
• ltx-2.3
• character-consistency
• temporal-coherence

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LTX-2.3 Face Preservation & Likeness Continuity Pipeline

An advanced ComfyUI workflow architecture designed to achieve flawless character identity preservation across extreme temporal motion sequences (including full 360° rotations and out-of-sight blind spots) using a unified Custom LoRA + IC-LoRA Spatial-Temporal Anchor system.

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🚀 The Core Challenge

Maintaining a subject's likeness in diffusion-based video models during major structural changes—like a person turning fully around—typically leads to identity drift, facial morphing, or "hallucinated" features when the face returns to the camera view.

By decoupling conditioning, this pipeline splits identity retention into a micro and macro layer:

1. Micro Structural Fidelity: A custom identity LoRA handles fine-grain muscle memory and high-fidelity texture replication.
2. Macro Spatial Anchoring: An LTX Image-Conditioning LoRA (IC-LoRA) Guide serves as a continuous cross-attention homing beacon across the global frame context.

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🏗️ Architecture & Pipeline Topography

STAGE 1: Native Spatial Generation (512x512)
[Base Model + Custom LoRA] 
       │
       ▼
[LTXAddVideoICLoRAGuide] ───► [KSampler] ───► [Audio Latent Injection] ───► [VAE Decode]
(Pure Video Latents Only)