Load Latent Upscale Model and VAELoader KJ issue
Hi RuneXX, I am using LTX-2.3_-_I2V_T2V_Basic.json and have encountered two issues:
- The Load Latent Upscale Model can find ltx-2-spatial-upscaler-x2-1.0.safetensors in the directory, but cannot find ltx-2.3-spatial-upscaler-x2-1.0.safetensors, while the Load Upscale Model can find the two.
- I used ltx-2-spatial-upscaler-x2-1.0.safetensors to execute the workflow, but the VAELoader KJ node reported an error, whether it's Kijai's or unsloth's vae model:
Is there something wrong with me?
Use regular standard Comfyui VAE loader for the video vae (as it is in the original workflow)
That should fix it ;-) the VAE KJ node is for the audio vae only
And the latent upscaler is here : https://huggingface.co/Lightricks/LTX-2.3/tree/main
Also a little "guide" here on where to find them and where to save them:
https://huggingface.co/RuneXX/LTX-2.3-Workflows/discussions/10
I keep getting the same error with the standard Comfyui VAE loder. I made sure to double check all files are correctly placed + ComfyUI has latest version as do all plugins. Same error as above.
PS: This is from "LTX-2.3_-_FL2V_First_Last_Frame_Injection.json" workflow.
Have you updated ComfyUI to the latest?
First of all thank you runexx.
After upgrading ComfyUI from 0.15.1 to 0.16.4.
The first issue still exists. The files have been downloaded and placed in the specified directory. Can help check the result, the two loaders detect different results.
The second problem has been solved. It can run successfully whether using ComfyUI's or KJ's vae loader.
Now the issue is that the ltx2 upscaler is obviously not suitable. Although the process can run through, the effect is not good.
I found out that there is also a latent_upscale_models folder that should be put there, hahaha.
yes you are not the first that did his ;-).
But you figured it out, its a different upscaler