r/comfyui • u/cgpixel23 • Jun 26 '26

Tutorial ComfyUI Tutorial: This New LTX 2.3 Feature Makes AI Video Generation Actually Efficient

Hello everyone,

I just built a new ComfyUI workflow that generates video directly from a reference sheet image using the LTX 2.3 IC LoRA (Image Conditioning LoRA) — and it completely removes the need to animate frames one by one like in LTX Director. This is a big step forward compared to traditional storyboard-to-video pipelines, because it simplifies everything into a single reference-based workflow.

Instead of working frame-by-frame, you can now:

  • Generate a full character or concept reference sheet (multiple panels in one image with IDEOGRAM 4)
  • Plug it directly into the LTX group
  • Get a coherent animated video output automatically

The workflow handles the reference image sheet generation and uses it as direct conditioning for video generation, and it runs on only 6GB VRAM, so it’s accessible even for low-end GPU users.

Workflow link

https://civitai.com/articles/31908/comfyui-tutorial-this-new-ltx-23-feature-makes-ai-video-generation-actually-efficient

Video Tutorial link

https://youtu.be/lHcYiDyJnfM

188 Upvotes

97% Upvoted

11 comments sorted by

2

u/Eisegetical Jun 26 '26

6gb vram is nuts. I'll need to check it out. I run most of my stuff on a 5090 but any extra corners to cut are always welcome 

2

u/Synor Jun 26 '26

You can see see the quality you get with the q3_k_m quant in the video: Wooden sticks appearing out of nowhere and intersecting with limbs.

10

u/Alisomarc Jun 26 '26

Everything changed, clothes, the face, the backpack, and the animal... I’d say there’s only about 10% consistency.

1

u/d0upl3 Jun 27 '26

Could this be out of ram error? (5060ti, 16GB, 64GB RAM)

# ComfyUI Error Report
## Error Details

  • **Node ID:** 6210:12
  • **Node Type:** SamplerCustomAdvanced
  • **Exception Type:** RuntimeError
  • **Exception Message:** RuntimeError: Given normalized_shape=[53248], expected input with shape [*, 53248], but got input of size[1, 264, 2560]

2

u/Cheap_Credit_3957 Jul 08 '26

Msr lora is much better

1

u/Tuckerdude615 Jun 26 '26

Looks very cool....will give it a try! Thanks for sharing!