[HN Gopher] LTXVideo 13B AI video generation
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LTXVideo 13B AI video generation
Author : zoudong376
Score : 201 points
Date : 2025-05-10 11:59 UTC (11 hours ago)
(HTM) web link (ltxv.video)
(TXT) w3m dump (ltxv.video)
| pwillia7 wrote:
| Will have to test this out and it looks like it runs on consumer
| hardware which is cool. I tried making a movie[1] with LTXV
| several months ago and had a good time but 30x faster generations
| sounds necessary.
|
| [1]: https://www.youtube.com/watch?v=_18NBAbJSqQ
| givinguflac wrote:
| The requirements say:
|
| NVIDIA 4090/5090 GPU 8GB+ VRAM (Full Version)
|
| I have a 3070 w 8GB of VRAM.
|
| Is there any reason I couldn't run it (albeit slower) on my card?
| GTP wrote:
| Just try it and see.
| mycall wrote:
| Will this work with ROCm instead of CUDA?
| echelon wrote:
| No way. AMD is lightyears behind in software support.
| Zambyte wrote:
| Specifically for video? Ollama runs great on my 7900 XTX.
| roenxi wrote:
| That isn't really what being behind implies. We've known
| how to multiply matrices since ... at least the 70s. And
| video processing isn't a wild new task for our friends at
| AMD. I'd expect that this would run on an AMD card.
|
| But I don't own an AMD card to check, because when I did it
| randomly crashed too often doing machine learning work.
| blkhawk wrote:
| I have a 9070 XT... rockm ATM is unoptimized for it and
| the generation speed is less than what it should be if
| AMD isn't fudging the specs. Also the memory management
| is dire / buggy and will cause random OOMs on one ruin
| then be fine the next. splitting workflow helps so you
| can have one OOM crash in between. VAEs also crash from
| OOM. This is all just software issues because vram isn't
| released properly on AMD.
|
| *OOM = Out Of Memory Error
| snagadooker wrote:
| 2B model was running well on AMD, fingers crossed with 13B
| too: https://www.reddit.com/user/kejos92/comments/1hjkkmx/l
| txv_in...
| blkhawk wrote:
| any idea how i could implement that for comfyUI on the
| 9070? Going to try to apply whats in the reddit post to
| my venv and see if it does anything.
| zorgmonkey wrote:
| Sometimes it is a little more work to get stuff setup, but
| it works fine I've run plenty of models on my 7900 XTX
| wan2.1 14B, flux 1.dev and whisper. (wan and flux were with
| comfyui and whisper with whisper.cpp)
| turnsout wrote:
| Or MLX/Apple?
| washadjeffmad wrote:
| Sure, just offload to system RAM, and don't use your system
| driver's fallback, but a specific implementation like MultiGPU.
|
| It won't speed it up, but using a quantization that fits in
| VRAM will prevent the offload penalty.
| Invictus0 wrote:
| Could've made a better website in Wix, lol. Did they forget to
| add the videos?
| linsomniac wrote:
| I got a bunch of videos on the page, it looked fine to me.
| sergiotapia wrote:
| FWIW I only see the hero video on the website and no other
| content except text. Is this a bug?
| coldcode wrote:
| Every browser I tried on my Mac does not show any of the videos.
| You only see the top animation.
|
| Also shown: cdn.tailwindcss.com should not be used in production.
| To use Tailwind CSS in production, install it as a PostCSS plugin
| or use the Tailwind CLI:
| https://tailwindcss.com/docs/installation
|
| There are a couple of JS errors, which I presume keep the videos
| from appearing.
| hobs wrote:
| https://pub.wanai.pro/ltxv_hero.mp4 same, but the video does
| work, just some problems in the site
| esafak wrote:
| wanai says it uses Alibaba's Wan2.1 video generation model.
| What's going on here? It LTXV somehow related?
| https://huggingface.co/blog/LLMhacker/wanai-wan21
| soared wrote:
| On iOS the unmute button will unmute and play the video. The
| play button did not work for me.
| jsheard wrote:
| That's the least of the problems with how they've optimized
| their assets, there's about 250MB of animated GIFs on the
| Huggingface page (actual 1989 vintage GIFs, not modern videos
| pretending to be GIFs). AI people just can't get enough of
| wasting bandwidth apparently, at least this time it's another
| AI company footing the bill for all the expensive AWS egress
| they're burning through for no reason.
| dingdingdang wrote:
| Super AI tech to the rescue!
| _345 wrote:
| this is the tech equivalent of being upset that someone
| forgot to also recycle the aluminum cap that came with their
| glass bottle
| terhechte wrote:
| It says `Coming Soon` for the `inference.py` for the quantized
| version. Does anyone happen to know how to modify the non-
| quantized version [0] to work?
|
| [0] https://github.com/Lightricks/LTX-
| Video/blob/main/configs/lt...
| october8140 wrote:
| Videos are also not loading on GitHub.
| shakna wrote:
| > Hi , i'm using default image to video workflow with default
| settings and i'm getting pixalated image to video output full of
| squares , how to fix this ?
|
| [0] https://github.com/Lightricks/LTX-Video/issues/163
| soared wrote:
| I wish groups would stop following OpenAI/etc's naming
| conventions of having things like "13B" in the product name.
| strangescript wrote:
| In open source its super useful to be able to immediately have
| an idea of how big the model is and what kind of hardware it
| could potentially run on.
| smlacy wrote:
| Why? Isn't it one of the most important aspects of this
| product?
| ericrallen wrote:
| Seems a bit unfair (or maybe just ill-informed?) to lump this
| in with the confusing mess that is model naming at OpenAI.
|
| The parameter count is more more useful and concrete
| information than anything OpenAI or their competitors have put
| into the name of their models.
|
| The parameter count gives you a heuristic for estimating if you
| can run this model on your own hardware, and how capable you
| might expect it to be compared to the broader spectrum of
| smaller models.
|
| It also allows you to easily distinguish between different
| sizes of model trained in the same way, but with more
| parameters. It's likely there is a higher parameter count model
| in the works and this makes it easy to distinguish between the
| two.
| drilbo wrote:
| >It's likely their is a higher parameter count model in the
| works and this makes it easy to distinguish between the two.
|
| in this case it looks like this _is_ the higher parameter
| count version, the 2b was released previously. (Not that it
| excludes them from making an even larger one in the future,
| altho that seems atypical of video /image/audio models)
|
| re: GP: I sincerely wish 'Open'AI were this forthcoming with
| things like param count. If they have a 'b' in their naming,
| it's only to distingish it from the previous 'a' version, and
| don't ask me what an 'o' is supposed to mean.
| ericrallen wrote:
| Good point! I forgot there was a smaller one out there
| already.
|
| OpenAI's naming conventions have gotten out of hand.
|
| I believe the "o" is supposed to mean "Omni" and indicate
| that the model is multi-modal.
| turnsout wrote:
| I just tried out the model via LTX Studio, and it's extremely
| impressive for a 13B model, let alone one that allegedly performs
| in real-time.
| moralestapia wrote:
| It runs on a single consumer GPU.
|
| Wow.
| jl6 wrote:
| The example videos look very short, maybe 1-2 seconds each. Is
| that the limit?
| snagadooker wrote:
| The model supports both multi-scale rendering and
| autoregressive generation. With multi-scale rendering, you can
| generate a low-resolution preview of 200-300 frames and then
| upscale to higher resolutions (with or without tiling).
|
| The autoregressive generation feature allows you to condition
| new segments based on previously generated content. A ComfyUI
| implementation example is available here:
|
| https://github.com/Lightricks/ComfyUI-LTXVideo/blob/master/e...
| unicornporn wrote:
| Uncanny as always. What do people use these for? Except for
| flooding Meta platforms with slop, that is...
| snagadooker wrote:
| Keyframing. Great for previz stages:
|
| https://x.com/lenscowboy/status/1920353671352623182
|
| https://x.com/lenscowboy/status/1920513512679616600
|
| https://discord.com/channels/1076117621407223829/13693260067...
| snagadooker wrote:
| I'm not certain what that website is or whether it's affiliated
| with the model developers.
|
| For more information about the model, refer to these sources:
|
| Model repository: https://github.com/Lightricks/LTX-Video
|
| ComfyUI integration: https://github.com/Lightricks/ComfyUI-
| LTXVideo
|
| Early community LoRAs: https://huggingface.co/Lightricks/LTXV-
| LoRAs
|
| Banadoco Discord server, an excellent place for discussing LTXV
| and other open models (Wan/Hunyuan):
|
| https://discord.com/channels/1076117621407223829/13693260067...
| sigmoid10 wrote:
| OP seems to be making tons of these "fan" pages for AI tools
| according to his HN submission history. It's also the same
| design every time. Smells fishy.
| hereonout2 wrote:
| > Disclaimer: This is a fan-made website created by AI
| enthusiasts. We are not affiliated with, endorsed by, or
| connected to manus.im. This website is an independent project
| and operates separately from the official Agenttars
|
| Loads of sites like this submitted, what's is the motivation
| I wonder?
| AtlasBarfed wrote:
| Ai trains/farms/steals from the internet, internet
| releases/publishes/steals the AI back?
| ronreiter wrote:
| I work with the Lightricks team.
|
| This is not an official page created by Lightricks, and we do not
| know who the owner of this page is or why he created it.
| xg15 wrote:
| what's going on here?
| simonw wrote:
| This is so weird. The domain has whois information withheld
| and the site is hosted on Vercel.
|
| Best hint is the submission history of
| https://news.ycombinator.com/submitted?id=zoudong376 which
| shows similar unofficial sites for other projects.
| tough wrote:
| so there's like a little network of chinese fake AI product
| shipping or something?
| theyinwhy wrote:
| Someone farming fake internet points and real internet
| traffic.
| jbkkd wrote:
| It's in the Lightricks repo, and your CEO just posted above.
| xg15 wrote:
| Yeah, but the webpage itself is unauthorized, even though it
| links to the official sources.
|
| Best case, an overenthusiastic fan, worst case, some bad
| actor trying to establish a "sleeper page".
| statusreport wrote:
| Co-founder & CTO of Lightricks here. Cool to see our new model
| gaining traction on HN!
|
| If you're looking for the official LTXV model and working ComfyUI
| flows, make sure to visit the right sources:
|
| - Official site: https://www.lightricks.com
|
| - Model + Playground: https://huggingface.co/Lightricks/LTX-Video
|
| The LTXV model runs on consumer GPUs, and all ComfyUI flows
| should work reliably from these official resources. Some third-
| party sites (like ltxvideo.net or wanai.pro) are broken,
| misconfigured, or heavy on unnecessary assets--so stick to the
| official ones to avoid issues and missing content.
| liuliu wrote:
| Hi! Draw Things should be able to add support in the next 2
| weeks after we get video feature a little bit more polished out
| with existing video models (Wan 2.1, Hunyuan etc).
| qwertox wrote:
| Surprising to see that you don't know who made this page. When
| I saw it I wanted to know who was behind this, so I found "(c)
| 2025 Lightricks. All rights reserved." at the end of the page,
| where Google led me to lightricks.com. I had my bets on a
| Chinese company, but I was wrong.
|
| I am surprised that it can run on consumer hardware.
| yorwba wrote:
| There's a bit of a trend of impersonating newly launched AI
| products. Just check out the submitter's other projects:
| https://news.ycombinator.com/submitted?id=zoudong376
|
| I assume it's for SEO or supply chain attacks or overcharging
| for subscriptions.
| tough wrote:
| Seems they took that strategy from crypto memes, vampire
| attacks into anything getting minimal exposure
| tough wrote:
| you might want to write to dang (email on footer) and they
| might change the URL to an official one.
|
| seems unsafe to have a weird fake landing as main article
| simonw wrote:
| > Is LTXV-13B open source?
|
| > Yes, LTXV-13B is available under the LTXV Open Weights License.
| The model and its tools are open source, allowing for community
| development and customization.
|
| _UPDATE: This is text on an unofficial website unaffiliated with
| the project. BUThttps://www.lightricks.com/ has "LTXV open source
| video model" in a big header at the top of my page so my
| complaint still stands, even though the FAQ copy I'm critiquing
| here is likely not the fault of Lightricks themselves._
|
| So it's open weights, not open source.
|
| Open weights is great! No need to use the wrong term for it.
|
| From
| https://static.lightricks.com/legal/LTXV-2B-Distilled-04-25-...
| it looks like the key non-open-source terms (by the OSI
| definition which I consider to be canon) are:
|
| - Section 2: entities with annual revenues of at least
| $10,000,000 (the "Commercial Entities") are eligible to obtain a
| paid commercial use license, subject to the terms and provisions
| of a different license (the "Commercial Use Agreement")
|
| - Section 6: To the maximum extent permitted by law, Licensor
| reserves the right to restrict (remotely or otherwise) usage of
| the Model in violation of this Agreement, update the Model
| through electronic means, or modify the Output of the Model based
| on updates
|
| This is an easy fix: change that FAQ entry to:
|
| > Is LTXV-13B open weights?
|
| > Yes, LTXV-13B is available under the LTXV Open Weights License.
| The model is open weights and the underlying code is open source
| (Apache 2.0), allowing for community development and
| customization.
|
| Here's where the code became Apache 2.0 6 months ago:
| https://github.com/Lightricks/LTX-Video/commit/cfbb059629b99...
| jeroenhd wrote:
| Are weights even copyrightable? I'm not sure what these
| licenses do, other than placate corporate legal or pretend to
| have some kind of open source equivalent for AI stuff.
| badsectoracula wrote:
| Depends on how they're made. If they're fully automated _and_
| copyrights do not transfer from training data to trained
| weights (which is what everyone assumes at the moment) then
| they 're the same as any machine output: not copyrightable,
| just like AI output isn't copyrightable.
|
| However if there is any active human involvement during
| training, one _could_ claim that this makes it human work so
| they 're copyrightable. For example not too long ago i wrote
| a simple upscaler for gamescope when i was learning how to
| implement neural networks and i did it in a somewhat "manual"
| manner by running the training for a bit, testing output,
| modifying a bit the code, adding/changing training data, then
| picking up from where the training stopped and continuing
| from there, etc, so one could claim that the weights i ended
| up with are the result of my own creative process (though TBH
| i wouldn't nor i am comfortable with the idea myself since
| we're talking about a few hundred numbers).
| gnarlouse wrote:
| AI video seems like it needs to be outlawed man. I just don't see
| how the marginal value (irrelevant) it creates for people like
| advertisers could ever outweigh the huge downside and risk it
| comes with for society at large.
| chmod775 wrote:
| Looks to be on roughly the same level as whatever ARK used for
| their AI trailer.
|
| No good yet for anything professional, but more than enough for
| pornography.
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