CivArchive

    This lora is to produce the effect of the subject growing bigger. It was trained on mostly male furry videos, so it probably skews towards that in generation.

    The alpha version was trained on a larger dataset that included more jerking and pulsing movements to indicate the growth, which tends to be overaccentuated in the generation.

    The beta version was trained for more iterations on a smaller dataset that included less visible growth movements, so it tends towards generating things that look like they're just being scaled up.

    Wan I2V Example ComfyUI Workflow: https://pastebin.com/jrBihCYA

    LTX 2.3

    There are no explicit trigger words, but you can include phrases like: "he grows bigger", "you can hear his body stretch as it grows", "expanding in a cramped room", which correlate to phrases used during training.

    Admittedly, there's room for improvement with this lora. The training trends are a lot more different than for Wan. At some point, training for more steps gives a worse result and reduces other dynamic movement. I thought it was at least worth sharing to give people a chance to play around with it, since I already spent the time and money to train it, lol.

    I use it with a lora weight or 0.9-1.25. It's possible you can get better results if you combine with other LTX movement or adapter loras.

    Alpha & Beta

    Generation Tips:

    • I've noticed that using a mix of both alpha and beta is usually what you want to do. I typically use 0.65 of beta and 0.55 of alpha. Trying to get a sum of a little more than 1 seems to be a good idea, but play around. That means you'll be using four loras for one generation: the high and low alpha and the high and low beta

    • There's no specific trigger word(s), but you may need to use phrases like "grows bigger"/"grows more muscular"

    • If your generation seems to have a lot of jerky movements or "jumping", try lowering the weight of just the LOW lora(s) used. Seems like part of the low noise is those smaller body movements.

    • This seems to need more steps when using the lightx2v/lightning loras, or else you get jerky movements. I typically end up using 10 steps, 5 High, 5 Low

    • I usually use Euler Simple

    Gamma Version:

    This was my attempt at combining everything into just one Lora you can use, which somewhat works, but isn't quite where I'd like it to be. You can use just the gamma lora, but it seems to work differently with different images. I also added some "sub-concepts" you can try to also invoke with specific phrases. Using them also seems to over-accentuate some of the movements, so if the video gets more janky, don't use them.

    • clothes ripping / clothes ripping off

    • the room gets cramped

    • grows more muscular

    They have varying degrees of success.

    Generation Tips:

    • It seems to need to be anywhere from 0.65 to 1.35, based on the image you're trying to animate. You can just use this one by its own.

    • You can also mix this with one or even both of the previous alpha/beta versions. Keep in mind that you'll want to lower the weights if you're using two. I find it works better with beta than alpha

    • If your generation seems to have a lot of jerky movements or "jumping", try lowering the weight of just the LOW lora(s) used. Seems like part of the low noise is those smaller body movements.

    • This seems to need more steps when using the lightx2v/lightning loras, or else you get jerky movements. I typically end up using 10 steps, 5 High, 5 Low

    • I usually use Euler Beta

    V1:

    This was my second attempt at combining everything into just one Lora you can use and not need to use any other alpha/beta/gamma with it, and I think it works decently well. It has the same trigger words as gamma.

    • clothes ripping / clothes ripping off

    • the room gets cramped

    • grows more muscular

    They have varying degrees of success.

    Note: each one you use increases the effect of the lora, and means you should use a lower weight. If you include the word "grow" multiple times, it seems to overexaggerate the effect and cause the subject to get really inflated/fat proportions.

    Generation Tips:

    • It seems to need to be anywhere from 0.65 to 1.15, based on the image you're trying to animate. You can just use this one by its own.

    • This seems to need more steps when using the lightx2v/lightning loras, or else you get jerky movements. I typically end up using 10 steps, 5 High, 5 Low

    • I usually use Euler Simple

    Description

    FAQ

    Comments (24)

    smcvisionSep 12, 2025· 2 reactions
    CivitAI

    My favourite ever. We need more of this!!

    GeminichildSep 13, 2025
    CivitAI

    Help It keeps failing to generate

    cruffsant461
    Author
    Sep 13, 2025

    Failing how?

    GeminichildSep 13, 2025

    It wouldn’t let me generate anything with the model on

    cruffsant461
    Author
    Sep 13, 2025

    I don't understand your issue, but I've attached a workflow file in the description that people can use to get started

    GeminichildSep 14, 2025

    @cruffsant461 Im trying again using both beta and alpha and its still not generating

    ZeidSep 16, 2025
    CivitAI

    On my end, everything works with the workflow, but the generation process is long and very resource-intensive, to the point where it sometimes crashes comfyui, even with a 4090 haha. Running Sage Attention on Windows is complicated, so I had to disable it.

    Is an update to your workflow planned? :)

    cruffsant461
    Author
    Sep 16, 2025

    I'm also using a 4090, and I'm pretty sure I've seen it take about the same amount of time as other video generations without the lora (~4-5 mins). I managed to get Sageattention working on windows, so maybe that's what's helping?

    No real plans to update the workflow unless I strike gold doing something. I pretty much just wanted to help people get started since it was a little wonkier than regular loras.

    Ponder_StibbonsSep 21, 2025

    I've noticed that some LoRAs are just beasts. Also the persistence in VRAM of elements from previous generations causes problems. Some give me trouble if I don't fully unload and empty the cache before using them, or a comfy restart. I very rarely get an OOM with the 4090, usually just a long hang rather than an actual crash. But maybe that's what you meant.

    Install this if you don't already have it, it's the best tool ever:

    https://github.com/crystian/ComfyUI-Crystools

    highsodium7229Sep 16, 2025
    CivitAI

    Would it be possible to release a single lora version? the low/high mix is not really feasible on single gpu setups. :(

    cruffsant461
    Author
    Sep 16, 2025

    I may train another version in the future, but there'd always be a high + low pair since that's how wan 2.2 works.

    highsodium7229Sep 16, 2025· 1 reaction

    @cruffsant461 Ah... I see. I forgot it was 2.2 and not 2.1. Thats one of the great things about 2.1.

    Either way, awesome work! o7

    Thanks for the reply

    EDIT: Found a solution! If you use the 2.2 AIO Solution and just route that model to both low and high, its not perfect but the results are much better and you can dodge the memory errors.

    biggerthanbigSep 16, 2025· 1 reaction
    CivitAI

    Nice! Really fun to mess around with. 😎

    Any plans for doing the reverse, a shrink/decrease version?

    cruffsant461
    Author
    Sep 17, 2025· 1 reaction

    Thanks for trying it out! No plans for that as of right now.

    biggerthanbigSep 17, 2025

    @cruffsant461 No worries, already plenty grateful for this one.

    growthwindSep 17, 2025
    CivitAI

    Thanks for creating a video gen growth lora!! I've been thinking about creating one too since the lack of but seems to be very challenging one to do.

    Any tips for me?

    cruffsant461
    Author
    Sep 18, 2025· 1 reaction

    I've found that you want to stick to single shots with the full body in it. You also don't seem to want too much or too little "movement" related to the growth or things get wonky. You do want some though. It's a tricky mix.

    growthwindSep 19, 2025

    @cruffsant461 I was planning on grabbing videos throughout the internet of my fav growth scenes, is that a recommended way? or should i try generating it somehow? the problem with generating the training data is there's no models that are capable of understanding the growth concept so far I've seen, except yours!

    Look forward to seeing your progress on growth models!

    cruffsant461
    Author
    Sep 20, 2025· 1 reaction

    @growthwind "I was planning on grabbing videos throughout the internet of my fav growth scenes"

    yeah, that's what I mostly did to build the training data. a lot of videos I just couldn't use, though, because of all the weird angles or scene cuts and stuff. you're gonna want videos with the full body in it next to other things for "reference." Now that I have a base model, I could probably try using some generated videos for future training data.

    ricky_spanish013Sep 20, 2025· 1 reaction
    CivitAI

    thanks for creating this! I played around with it and works very well on my end for most scenarios! It even plays well with (not all) other loras, allowing to mix scenarios

    Awesome work!

    growthwindSep 21, 2025

    I've never experimented with loading 2 loras, does it cost more vram?

    YuichichibiSep 22, 2025· 1 reaction
    CivitAI

    this is exactly what ive been looking for! I love it!!

    growthwindSep 23, 2025· 3 reactions
    CivitAI

    Do you have a https://buymeacoffee.com/? Really appreciate your work!

    cruffsant461
    Author
    Sep 23, 2025· 1 reaction

    I don't but I just appreciate that you really like the lora!

    LORA
    Wan Video 2.2 I2V-A14B

    Details

    Downloads
    540
    Platform
    CivitAI
    Platform Status
    Available
    Created
    9/12/2025
    Updated
    7/27/2026
    Deleted
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