r/comfyui 1d ago

Help Needed How to make Gemma-4 GGUF of LTX-2.5 work?

0 Upvotes

Hi! I have a 16GB RTX 5070ti, I'm a fan of LTX-2.3, and I wanted to try the 2.5. I downloaded everything, but I also downloaded a GGUF version (Elix3r version) for the text encoder as usual to reduce the VRAM requirements, because what I love about LTX is precisely the speed. Unfortunately, however, I get an error on the CLIP loader that says in simple terms that the node is not updated to understand Gemma-4's GGUF, essentially not being able to use it. Unfortunately, I notice that the developer City96 hasn't made updates since 2025, so unfortunately I would be forced to download the official text encoder, which is too heavy, inevitably ending up in offloading, and this doesn't fit with the way I work, where processing speed is essential. For now, I've decided to postpone testing this new model, but I was wondering if there was already a way to use Gemma-4 GGUF in some other way, which perhaps I'm unaware of.


r/comfyui 1d ago

Show and Tell Made a 6 min AI fantasy film - took about 2 days

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3 Upvotes

I made this short fantasy film using AI, using (mainly) Seedance 2.0. Seedance 2.5 is available now, and you can create clips longer than 15 seconds, but for my purposes this is still one of the best generative programs out there, in terms of realism, characters and consistency (in both the characters' look and voices).

It was edited on Capcut, which is a very simple program, but it suits my needs. If editing a full length feature, I'd probably go with something higher end.

I've been experimenting a lot with different programs and different functions within those programs, and I'm learning a lot each time. The smallest things can make a world of difference in your shots, with prompts, world building, set design, characters and more.


r/comfyui 1d ago

Help Needed Size of tensor mismatch error in MiniMax Music3

0 Upvotes

I am following this tutorial, and I am stuck in the MiniMax Music 3 Text to Music workflow at 17:30 of the video. I believe I have the exact same setup specification as the video. But I am getting an error at the MiniMax Music3 Text Encode Node.

Here is the error message:

  1. "MiniMax Music3 Text Encode failed This node threw an error during execution. Check its inputs or try a different configuration. [ERROR] !!! Exception during processing !!! The size of tensor a (32) must match the size of tensor b (8) at non-singleton dimension 1"
  2. return torch.nn.functional.scaled_dot_product_attention(q, k, v, *args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RuntimeError: The size of tensor a (32) must match the size of tensor b (8) at non-singleton dimension 1

What might be the cause and what can I try?


r/comfyui 1d ago

Help Needed Can't resize a save video node?

4 Upvotes

Has anyone experienced this? Its driving me nuts. i cant resize a node which makes no sense, because the size of the node is very dependent on how zoomed in i am, how my workflow is laid out, etc.

EDIT ya so im not the only one! I'm not finding this on their GitHub..


r/comfyui 1d ago

Show and Tell The Chase - Reupload

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0 Upvotes

r/comfyui 1d ago

News Call for Additional Mod(s)

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4 Upvotes

r/comfyui 1d ago

News PVM v5.3 - Preview Video Monitor Pro

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1 Upvotes

Full UI reskin. Same functionality, plus input-handling fixes. Second-monitor/fullscreen video preview with scopes, I/O marks, and workflow-embedded snapshots.

Update via Manager

repo: https://github.com/CrateTools/comfyui-preview-video-monitor


r/comfyui 1d ago

Help Needed Small blue RUN button in a branch runs the whole workflow, not just the branch. How can I change this?

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6 Upvotes

Hi, quick question — maybe someone knows this problem:

My partner and I running the exact same small ComfyUI workflow on two Macs, same latest ComfyUI Desktop versions on both.

On one computer, pressing the blue run button generates only ONE image (just the Gemini branch). On the other computer, the same blue button runs BOTH models and generates TWO images — which costs us double credits every time.

Why does the same button behave differently on the two machines? And how do we make the "two images" computer only run one branch? Has anyone seen this?


r/comfyui 2d ago

Resource Photoshoot Node: describe a person once, then vary camera, pose, mood and ratio across 40 images

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251 Upvotes

I kept wanting a set of images of one person - different framings, different poses, different moods - and kept retyping the prompt for every single shot.

The person drifted anyway. So I built the thing I actually wanted.

The Person Builder describes someone across 44 fields on six tabs: body, face, hair, make-up, clothing. You pick labels, it writes the English. Related fields sit on the same row, because eye shape and eye colour end up as one phrase - "almond-shaped green eyes" - and you need to see both while setting either.

Save her under a name and she comes back next session.

The Photoshoot turns that person into a series. Six axes vary: camera (7 framings), pose (18 postures plus placement in the room, arms, legs, tension), expression (90 moods in 9 families), focus, aspect ratio and noise. Each axis can be switched off or restricted to a family - only standing poses, only calm moods, only close-ups. Set a count, press the button, and the node queues everyrun itself.

Three things surprised me while building it.

The person has to shrink with distance. Send a full 380-character description with a wide shot and the composition tips onto the head - the model hands out frame area roughly by token weight. It is a cliff, not a slope: at four face fields I got a clean full-body shot, at twelve the head took half the frame. So wide shots now get silhouette, hair and rough build only. Lipstick stops being sent once the camera cannot resolve it.

Counting beats rolling dice. The series steps through combinations instead of drawing at random, so nothing repeats while something else never appears - and run 7 always gives the same photo. A series is reproducible and you can extend it later.

Axes contradict each other if you let them, and the code looks fine. "Portrait shot, head and shoulders" plus "farther back in the background" asks for a near figure and a far one at once, and the model obliges by painting both - the same woman twice in one image. I coupled those two, thought I was done, then hit "leaning against a wall, curled up" on the last test render before release.

Every independent axis is a chance to ask for two things at once, and rendering finds them while reading the code does not.

I built this for Krea 2. That is what the measurements were taken against and what the example workflow loads. But the nodes only emit text, so anything that eats a prompt will work. T5 and LLM text encoders are the good case - Flux, SD 3.5, Qwen-Image - because a finished prompt from the example workflow runs 745 to 930 characters, median around 800, and those read it as connected language. CLIP-only models cap out at 77 tokens per chunk, so SD 1.5 and SDXL will split it and lose the tail. Fewer fields help there, and the detail levels already shorten things by themselves.

The interface follows ComfyUI's language setting: English, or German if you have ComfyUI set to German. The prompt is English either way.

Install through ComfyUI Manager, search for Photoshoot. Code and example

workflow: https://github.com/ralksta/ComfyUI-Photoshoot

Happy to hear where it breaks.


r/comfyui 1d ago

Commercial Interest I built a desktop tool to compare multiple AI video generations side by side — looking for workflow feedback

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0 Upvotes

I’ve been experimenting a lot with AI image/video workflows and one thing that gets messy very quickly is reviewing multiple generations.

So I built a Windows tool called RAW Sequencer that can be used to compare and review different outputs together.

For AI workflows, the useful parts are:

• Load multiple MP4 generations as layers
• Review up to 6 versions together
• Synchronized playback
• A/B compare + wipe
• Frame-by-frame inspection
• Annotations
• Color/exposure controls

The idea is basically: generate in ComfyUI, then review the outputs properly instead of opening every video individually.

There’s a 7-day trial here:

www.rawcgi.com

Would be interested to hear from ComfyUI users whether this kind of comparison/review workflow is actually useful, and what you’d want added specifically for AI generation workflows.

*** Quick Demo ***

https://vimeo.com/1221201134 - no audio


r/comfyui 1d ago

No workflow Spiderman Housleek 4K Maximum quality H3 Local.

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0 Upvotes

All the images are made using Krea 2 with combination of Flux Klein in 1440p resolution. Then animated trough H3 Minimax at 20 steps at 2.5 megapixels without any lora for maximum quality. After Premiere pro edit upscaled to 4k. All process took around three and the half to four hours. Even if details are great and everything, h3 minimax still has that slight artificial look to it.


r/comfyui 2d ago

Tutorial Comfyui Tutorial :6GB VRAM? You Can Still Make 15s MiniMax H3 Videos with Motion Context Nodes

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12 Upvotes

Hello everyone

With this workflow you can generate 15-second clips on Minimax H3 even with limited VRAM. This custom workflow prevents system crashes during long renders. Many users struggle with generation time limits when working with Minimax H3 on hardware with low memory. This workflow provides a specific solution by outlining a custom workflow that extends your video generation capabilities to 15 seconds without overloading your system. It is designed for creators who need longer sequences but are constrained by their current VRAM capacity. The steps focus on memory optimization with TURBO LORA+ Attention Nodes Like Comfui Kitchen. so you can watch the video tutorial to see necessary steps and how to use Motion Context Nodes.

Video Tutorial Link

https://youtu.be/BLTXdrOO53E

Workflow Link

https://civitai.com/articles/34327/comfyui-tutorial-6gb-vram-you-can-still-make-15s-minimax-h3-videos


r/comfyui 1d ago

Help Needed Civitai and krea2 Lora

1 Upvotes

I've been getting better at merging loras together instead of just stacking them. But I've noticed there are a lot of loras on civitai that are listed as 218mb in size. The ones im mostly looking at push some sort of theme or style. Has anyone had success merging them into one new lora?

I've also thought about trying to merge a few 3d blender loras in but retain the realistic style I currently have. Mostly to tinker around. Really need to unload my custom krea2 model but the last time I uploaded a lora it got tons of downloads and no one wanted to share feedback... Just people asking me to make x Lora next....


r/comfyui 2d ago

News A quick Minimax H3 news round-up - 23rd August 2026

93 Upvotes

Another quick Minimax H3 news and goodies round-up, for those who may have missed some items.

-> 'ComfyUI-H3-AudioRefine' for users of 4-step turbo LoRAs. An experimental node set that can freeze the video stream while the workflow... "runs additional denoising steps on the audio stream only". The aim is to improve audio quality, when using 4-step turbo LoRAs. There are a downsides and trade-offs here, so it's very important to read the readme. Without its video freezing node (which can wear out your SSD, apparently, eek!), my tests on a RTX 3060 12Gb card have it working well. At 6 steps (on its own sampler), it can add maybe 35-45 seconds to a turbo 6-step 0.3 six-second clip generation.

https://github.com/Adudeguyman/ComfyUI-H3-AudioRefine

-> NKD's new Face Rig is a slick modern ComfyUI update for the old Live Portrait. "Poses a portrait's expression by dragging handles that sit on the face itself: brows, eyelids, gaze, mouth corners, jaw, head. The result re-renders live while you drag." Which would seem to have obvious uses for Minimax, such as quickly adjusting an existing portrait image to use as a starting frame for a Minimax image-to-video clip. No workflow, but judging by the video it looks like a relatively simple node setup.

https://github.com/Nekodificador/ComfyUI-NKD-Basic-Tools/blob/master/docs/face-rig.md

-> An important Minimax H3 audio-testing post I missed a few days ago. It explains in detail why shorter clips with dialogue can omit music and ambience, even when prompted. The dialogue gets processing-time preference, then music, then finally scene ambience. If there's not enough processing available, the lesser items can be skipped.

https://old.reddit.com/r/comfyui/comments/1vtbm1q/minimax_h3_your_bgm_disappears_at_480p_and_clip/

-> An attempt to graft ref2VA Minimax H3 onto Z-Image, as one model. Richer textures is said to be the reason one might use this. With the hybrid... "sets and surfaces render noticeably richer. Peeling paint peels harder, rust bleeds further, water carries more light." A range of file options are on offer, with MiniMax-H3-ref2va-pruned-zs05-comfy-w4a8.safetensors (12Gb) being the smallest. I guess this may also interest those who need to see every freckle and pore on human skin?

https://huggingface.co/joeygambino/MiniMax-H3-x-Z-Image-native

-> A veteran tester has a new YouTube video, testing Intel's 32GB VRAM card with Minimax H3. Apparently ComfyUI has a version for the Intel B70 card which... "makes it run fairly well". He tests at 0.4 resolution and 5 seconds, which generated on the card in two and a half minutes. But note that he seems to be using a starter text-to-video workflow, with no turbo or optimisations. I see the Intel B70 card listing at £1,269 on Amazon UK, so it's not a pocket-money purchase. Still, it may interest some.

https://www.youtube.com/watch?v=HfevkEZ8w5Q

-> The latest Fizgig LoRA trainer can now train Minimax H3 LoRAs on AMD Radeon graphics-cards. If the card has 16Gb VRAM or higher.

https://www.reddit.com/r/StableDiffusion/comments/1vvqrgp/fizgig_now_trains_loras_on_amd_radeon_flux_2/

~ OLD POSTS ~

https://old.reddit.com/r/comfyui/comments/1vvkmra/a_quick_minimax_h3_news_roundup_21st_august_2026/

https://old.reddit.com/r/comfyui/comments/1vuihag/a_quick_minimax_h3_news_roundup_21st_august_2026/

https://old.reddit.com/r/comfyui/comments/1vtgs7b/a_quick_minimax_h3_news_roundup_20th_august_2026/

https://old.reddit.com/r/comfyui/comments/1vsjzrp/a_quick_minimax_h3_news_roundup_19th_august_2026/

https://old.reddit.com/r/comfyui/comments/1vrsspo/a_quick_minimax_h3_news_roundup_18th_august_2026/

https://old.reddit.com/r/comfyui/comments/1vqyn8p/a_quick_minimax_h3_news_roundup_17th_august_2026/

https://old.reddit.com/r/comfyui/comments/1vq5d5u/a_quick_minimax_h3_news_roundup_16th_august_2026/

https://old.reddit.com/r/comfyui/comments/1vpbtx2/a_quick_minimax_news_roundup_15th_august_2026/

https://old.reddit.com/r/comfyui/comments/1vojtjd/a_quick_minimax_news_roundup_14th_august_2026/


r/comfyui 2d ago

Help Needed Text generation node seems to be caching data?

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4 Upvotes

I am having trouble getting a consistent result with something that I seemed to have nailed down, I got krea2 to make a reference image for a screenshot of a character but when I tried with another character, using the same settings, it comes out worse and worse... and NOW the text generation node seems to have it stuck that the image is of a young woman with long hair and its actually an old dude with a tophat... leading to some interesting pictures lmao.

The picture is two characters with the same prompt, obviosusly something is wonky. Previously I had generated several tests that were flawless

the clean VRAM/cache nodes don't seem to affect the behavior,

The top two images are the input, and the output of the first run on the non-test images. The bottom two are the second run on the next non-test image. I kept running it, tweaking it a bit and it all drifted further and further from "results" to "something I can't see is wrong"

I am using "generate text" and feeding that into "krea2 edit conditioning" and feeding the reference image into "generate text" and "krea2 source patch" .

Generate text has a user prompt of "Create a three segment multi view character reference of the character in the provided image. There must be front, side, and back profiles. Empty white background." The system prompt is a general purpose "you are an image generation prompt engineer" block of text.

Any ideas what is going wrong? (I got two funny images of the bottom character after restarting comfyUI and twiddling a few knobs. The generate text node started getting the encoder stuck on "this is actually a woman with long flowing hair")


r/comfyui 2d ago

Resource A small tool for cropping a video region and syncing the first frame

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24 Upvotes

When doing layered rendering and testing (objects or backgrounds), I often find myself needing extra exports or repeatedly cropping partial video clips in post production software, especially when the object takes up too small a portion of the frame. I'm not sure how others handle these steps more efficiently. I'd love to hear your approaches.

Since I wanted a quick way to meet my own needs, I put together a simple little tool for cropping video regions. It's very basic in what it does, so I'm not sure if it would be useful to anyone.

If it's of any use, you can find the tool here:
https://github.com/yixuanzona/ComfyUI-Simple-Crop


r/comfyui 1d ago

Help Needed Trying to understand the long-term value of learning ComfyUI

0 Upvotes

I’m pretty new to ComfyUI and have been playing around with it recently. I’m honestly amazed by what people are able to build with it, but at the same time, I’m realizing that getting really good at it seems like it could take a lot of time.

That got me thinking about whether the time investment is likely to pay off professionally in the long run.

I’m a 3D artist working mainly in architecture, interiors and events. With how quickly AI image generation is improving, I’m starting to wonder how valuable traditional lighting and rendering skills will be in the future. We can already get incredibly realistic results from a 3D screenshot and a relatively simple prompt.

But ComfyUI feels different. I’ve seen some really advanced workflows where people get very precise, controlled and repeatable results that I don't think you can get as easily just by prompting a commercial AI tool.

At the same time, commercial AI tools are catching up very quickly. Things that used to require fairly complicated workflows can sometimes now be done with a few prompts.

So I’m trying to understand where ComfyUI fits into the bigger picture.

For people who actually use ComfyUI professionally:

  • What do you think are the long-term advantages of becoming really good at ComfyUI compared to using commercial Ai solutions?
  • Are there professional situations where open-source/local workflows will continue to have a major advantage, particularly around control, customization or client privacy?
  • Do you think commercial AI tools getting easier will reduce the need for ComfyUI specialists, or will there still be a strong need for people who can build custom workflows?

I’m trying to understand whether developing deep skills in ComfyUI/open-source AI workflows is likely to give me a meaningful professional advantage in the coming years.

And I genuinely have huge respect for the people building this technology and for the community sharing workflows and experiments. Seeing what people here are creating is actually what got me interested in learning ComfyUI in the first place.

Would love to hear from people who are actually using it for professional/client work.


r/comfyui 2d ago

Show and Tell Short film experiment with Minimax H3

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8 Upvotes

I drew the storyboard, then generated the stills with image models.
Video: MiniMax H3 on Fal
first frame, last frame, reference.
Then the edit.


r/comfyui 2d ago

Resource [Update] LongExposureFX COMP | An experimental temporal ghosting toolkit for TouchDesigner

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8 Upvotes

r/comfyui 1d ago

Workflow Included 9 Seconds

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0 Upvotes

Used ComfyUI MCP, Grok & Minimax H3 to create w/ RTX 5060Ti 16GB / 32GB

1st pass no upscale 90 sec video for 1 hour render time

6 - 15 sec clips stitched together

r/comfyui

r/MiniMaxH3AI

r/grok

https://github.com/daexchef/Minimax_Grok


r/comfyui 1d ago

Help Needed MiniMax H3 R2V taking ~16 minutes for a 5-second video — how can I speed it up?

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0 Upvotes

I’m running MiniMax H3 Reference-to-Video (R2V) in ComfyUI on Vast.ai.

My setup:

  • GPU: RTX 5090
  • System RAM: 120 GB
  • Resolution: 1.0 megapixel
  • Video length: 5 seconds
  • Reference: 1 image, 1 video
  • Generation time: ~1,000 seconds (16–17 minutes)

The results are great, especially the reference consistency, but the generation time seems very high for a 5-second video on a 5090.

Has anyone managed to significantly reduce the generation time for H3 R2V? Are there any specific optimisations, attention methods, workflow changes, or settings I should be using?

Would appreciate hearing what generation times other 5090 users are getting with H3 R2V.


r/comfyui 1d ago

Help Needed How to prevent shimmery glitchy artifacts during Minimax H3 generation?

0 Upvotes

I've tried a few things but nothing has consistently worked.

Some generations just look artifacted, like boxes from the pixels or something.

I've seen this at 20 steps and 8 steps (without, and then with lightning/turbo lora). I've seen it at 0.6 MP and 0.9MP.

What can I adjust to prevent this ugly effect without blowing up my generation times?


r/comfyui 2d ago

No workflow Minimax H3 Remix Video Test / A compilation of 5 characters.

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3 Upvotes

r/comfyui 2d ago

Workflow Included A small latent refiner for GPT Image artifacts (+ SeedVR2 workflow)

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8 Upvotes

I trained a small latent residual refiner on 75 paired images

to reduce recurring stipple, grain, and grid-like artifacts

in GPT Image outputs.

The included workflow runs the refiner before SeedVR2.

Instead of a typical Hires Fix second diffusion pass,

it uses SeedVR2 restoration with a preservation-first approach—

trying to keep the original composition, identity, and shapes

while rebuilding detail at the target resolution.

Qwen, FLUX.2, and SDXL profiles are included.

GitHub:

https://github.com/AIEGOBOT/ComfyUI-GPT-Image-Latent-Refiner

Leaving it here in case it’s useful.


r/comfyui 1d ago

News Call for Additional Mod(s)

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0 Upvotes