LTX-2.5 22B FLF2V Video Generation Runs on 8GB VRAM, Workflow Open-Sourced
Ecstatic-Use-1353 · reddit · 2026-09-06
A developer got LTX-2.5 22B Distilled first-and-last-frame-to-video running on an 8GB RTX 4060 Laptop GPU, open-sourcing the full ComfyUI workflow. Key details:
- Stack: W4A8 ConvRot quantized transformer + Gemma 12B W4A8 text encoder, official BF16 video VAE and latent upscaler, with DynamicVRAM, async weight offloading, and pinned memory
- Resolutions: stable at 576×1024; 720×1280 is the best quality/time tradeoff on 8GB; 1080p works but can take 15+ minutes per clip
- Generates motion between frames with surprisingly coherent people, equipment and environment
- Repo includes workflow JSON, model list, install and troubleshooting notes; author is experimenting with 6 keyframes + 5 prompts for longer directed sequences
Related event: LTX-2.5 22B Runs on 8GB VRAM with Open-Sourced Workflow(2 posts)→
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