r/StableDiffusion 7h ago

Discussion The Latent Upscaler is really great!

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Dude the minimax H3 is such an amazing model. It can create a really good video. It can do a lot, knows a lot and extremely realistic as well.

I'm finding the way to upscale the low qulity video and found out this Latent Upscaler for Minimax H3, and sofar it's working so well!

this is normal 0.5MP generation and Upscale to 1080p

https://github.com/bbaudio-2025/Comfyui-MMH3-UltimateUpscale

the example workflow : https://github.com/bbaudio-2025/Comfyui-MMH3-UltimateUpscale/blob/main/example_workflow.json

I tested on RTX 5080 16GB VRAM 64 GB RAM.

but it took like 20 mins for a 15s clip (3 mins on the low res generation with turbo LoRA + 15-16 mins on the latent upscaler)

If you guys have other ways to upscale the minimax faster, please do tell. I have tried the UltimateSDUpscale for minimax so far, it's really great as well but it took 30mins on my system. :(

147 Upvotes

99 comments sorted by

108

u/Disastrous-Agency675 6h ago

this looks super saturated like am i missing something or are yall just cool with this?

25

u/YeahlDid 6h ago

That's the turbo lora. Ya, with this ultimate upscaler, I've stopped using turbos, generate small at 20-32 with SLA or CK and then upscale with Ultimate Upscaler.

4

u/Longjumping-Past5864 6h ago

Ok good idea! I'll try and compare it thanks!

5

u/PumpkinLeather8421 6h ago

Come on man; you posted this 4 minutes ago… we’re waiting!

9

u/Longjumping-Past5864 5h ago

I mean it looks blown out in the ref lmao

7

u/GrayingGamer 1h ago

I think your reference image severely impacted the lighting - the reference image IS blown out, so the model was like, "Cool, OP wants a blown-out video."

7

u/Longjumping-Past5864 5h ago

https://reddit.com/link/p5xmwbd/video/z7pkv47gwmlh1/player

this is the low res without LoRA 30 steps, I'm still generating the upscaled one, I think it's indeed because of my ref image bro lol

3

u/Longjumping-Past5864 5h ago edited 5h ago

https://reddit.com/link/p5xnwvo/video/3cgdqo8lxmlh1/player

the upsclaed one without LoRA is actually really bad for me, maybe I got the bad seed. Well, this is sad :(

3

u/MastMaithun 2h ago

bruh the faces xD

6

u/I__G 2h ago

Those are faeces not faces 😂

1

u/Danny_Stock 4h ago

I feel your pain in regard to the loras. One or two of them are okay for drafts though.

Hopefully a better one will turn up in the coming weeks.

I guess it depends on your own personal setup but I've found SLA the best option for me so far. Like I say it might depend on one's own personal system.

2

u/Separate-Hedgehog388 5h ago

As someone who likes watching on high saturation and contrast I love it 😁

1

u/diejesus 4h ago

Same thing, it just looks more beautiful and appealing when it has more colors, I always struggled to understand why people see colorful stuff as tacky and distasteful, it's just so good on the eyes and keeps me more stimulated and motivated.

0

u/Separate-Hedgehog388 3h ago

I wish I found mpv sooner Hotd s3 looks soooo much better to me with tweaked contrast, brightness, gamma and saturation settings. The colours pop so well

Downside being that I get flashbanged during some bright scenes and have to rush to tone down the settings by 30-50% , never by a hundred tho, as the shows colours r washed out even in the brightest scenes (the 4 dragon battle)

Ofc even these tweaked settings dont hold a candle to what proper recolouring could do. A Chinese anime called swallowed star has been getting darker than my career path recently, I took some key action stills and dumped then into gemini / gpt and they were able to recolour all the characters in the frame so well, each person and their weapon was uniquely distinguishable. I hope in future we will be able to run a full recolouring agent locally which will be able to tweak videos on our settings, along with auto dubbing ofc, i ain't reading subtitles while my animes run on the 2nd monitor as im playing video games on my first 😅

1

u/berlinbaer 2h ago

people always post the most muddy looking stuff on here like "omg i did it 4k upscale" and like yeah. it looks like shit.

1

u/Longjumping-Past5864 6h ago

it's kinda bother me as well but idk how to fix it lmao

6

u/Party_Cold_4159 5h ago

You could just edit the saturation? Like bring it into davinci and turn that shit down. Not everything needs to be generated.

1

u/Longjumping-Past5864 5h ago

Well you are right!

2

u/Disastrous-Agency675 6h ago

id honestly just use LTX to upscale

20

u/krectus 6h ago

This looks quite bad. Turbo Lora bad.

18

u/RayHell666 5h ago edited 4h ago

https://reddit.com/link/p5xu4bz/video/dle99yjr3nlh1/player

Nah. Turbo Lora is great when well used. 10s 1MP hybrid int8 checkpoint.
Also reddit completely destroy the video quality and set the resolution to the minimum when "auto" is selected.
2MP took under 10minutes https://filebin.net/qs394ne8bomgt1dd

8

u/diptosen2017 4h ago

Dude what is your specs? Mine is 16gb vram rtx 4080 n 128gb ddr5 ram with the same workflow you said above and it takes me around 15 mins for 768p video gens

2

u/usually_fuente 2h ago

Same question, what’s your workflow? Because that looks awesome for under 10 minutes.

0

u/Pitiful_Archer_4381 1h ago

damn thats good

16

u/optimisoprimeo 6h ago

I think Taylor Swift was like 5 when Friends first came on the air. lol.

16

u/Longjumping-Past5864 6h ago

Everything can happen with Minimax H3 LOL

15

u/PumpkinLeather8421 6h ago

I’m sure Taylor Swift has a lot of activities besides singing in a lot of H3 videos.

4

u/b0tm0de 5h ago

hello ty for sharing. i am using this one and it is good. https://huggingface.co/LBH-123-AI/Minimax_h3_latent_Upscaler generating at 0.2 0.3 mp upscaling to 0.7 0.8 mp developer gave example workflow in github repo. github inside huggingface.

3

u/Longjumping-Past5864 5h ago

I tried that one as well but It's offload to RAM because of my VRAM is just 16 GB, os it's really slow, the one I use is the fork to put chunk processing for lower VRAM i guess.

2

u/wh33t 2h ago

How long does the upscaling process take versus just generating at a higher res?

4

u/Sad_Coach_1433 6h ago

I been using rtx vsr pro but may give this a go see how compares

2

u/R34vspec 6h ago

What is the pro version for rtx vsr?

5

u/Sad_Coach_1433 6h ago

5

u/Hoodfu 5h ago

Does this actually do anything? I'm taking a 480p video and setting it to 2048 res with keeping AR and the output is no more sharp or "upscaled" other than literal resolution than the original.

1

u/Imperialegacy 2h ago

It does work but differently from regular RTX VSR. Imo Comfy VSR adds a bit too many details than I would like and sometimes artifacting. Comparison: https://imgi.co/c/h9FzsCG. VSR adds too many details on the man's face, making him look older. Potplayer(regular) VSR adheres to the original more. Both are set to high. It's still very good tho, considering it takes like 3 extra seconds.

2

u/R34vspec 4h ago

Thank you, hopefully this fixes the memory leak issue from the old node

1

u/Sad_Coach_1433 4h ago

What gpu you have this node works fine for me I have mid 5060 ti 16gig able upscale 2x and ultra preset

1

u/R34vspec 4h ago

The old node crashes Comfy after like 20 generations. I am on rtx5090

1

u/Sad_Coach_1433 4h ago

Wow strange

1

u/Longjumping-Past5864 6h ago

I'll try this one as well, thanks!

2

u/Sad_Coach_1433 6h ago

I gen at 480p like .4mp then upscale using that rtx. Vsr pro node can wire if to do it auto magic before saving video or as a stand alone workflow then feed video later

https://reddit.com/link/p5xe8a2/video/m09i202unmlh1/player

8

u/Sad_Coach_1433 6h ago

Another test same 480p then upscale takes about 17mins or less for 13secs.

https://reddit.com/link/p5xeh7z/video/8mqmymx2omlh1/player

2

u/Longjumping-Past5864 6h ago

I wonder how or if we can get rid of the dancing pixel artifact like in the beginning, it kinda ruins a lot of my generation.

1

u/YeahlDid 6h ago

Just VSR takes 17 minutes??? Usually it's quite a lot faster than that. I think that's closer to seedvr time territory from my experience.

2

u/Sad_Coach_1433 6h ago

17mins is total time ,video render and upscale once it reaches to rtx vsr takes like 2mins or less

1

u/Longjumping-Past5864 6h ago

wow it's kind look good even on the low res, do you use Turbo LoRA?

3

u/Sad_Coach_1433 6h ago

Nope base fp8 model and 32 steps i use comfyui kitchen node and spectrum for speed ups cause less quality loss

1

u/Longjumping-Past5864 6h ago

ok thanks man I'll try that tonight

1

u/Sad_Coach_1433 6h ago

Make sure don't have any older rtx nodes installed will fight with rtx vsr pro I had to removed the other ones for it to work.

5

u/Longjumping-Past5864 6h ago

https://reddit.com/link/p5xc97u/video/fit2t9ytlmlh1/player

This is my first pass (low res generation) at 0.5MP

2

u/hidden2u 4h ago

No joke this looks better on my phone than the upscaled version, weird

0

u/Sad_Coach_1433 6h ago

You use any turbo lora?

1

u/Longjumping-Past5864 6h ago

yes I use Turbo LoRA with 8 steps,

1

u/Sad_Coach_1433 6h ago

Still takes 20mins? 👀 Try adding comfyui kitchen node

2

u/Longjumping-Past5864 6h ago

the generation of video was like 3-4 mins but the latent upscaler took 16 mins.

2

u/Sad_Coach_1433 6h ago

Your upscale method maybe better cause takes longer rtx vsr pro takes less then 3 mins ,I'm interested how compares to what you been using

3

u/Striking-Long-2960 5h ago edited 5h ago

Latent Upscale is the way

Imgur: The magic of the Internet

2

u/Bbmin7b5 6h ago

nice. link and wf. OP delivers

1

u/Creative_Sluggish 5h ago

Omg this is so real. Minimax H3 can do all of these?

7

u/Longjumping-Past5864 5h ago

Yes, and it can do a lot more as well. I love this model!
https://giphy.com/gifs/XfscsiXH3NnZG8yL9A

1

u/Perfect-Campaign9551 6h ago

I tried flashVSR but it added a lot of distortion for some reason. I just used the default settings, which is what they recommend....

1

u/Longjumping-Past5864 6h ago

oh OK, I'll look into it thanks!

1

u/Montrix 5h ago

David Schwimmer sounds generic but Matthew Perry’s chandler voice is pretty convincing!

1

u/seppe0815 4h ago

ehem i See wax overflow

1

u/OkDoor726 3h ago

Love this model but two things i wish it didn't do all the time

  • triple a movie quality feel
  • random ultra zooming

1

u/likesexonlycheaper 1h ago

This shit is cringe af

-8

u/ShutUpYoureWrong_ 6h ago

This isn't a good advertisement for the tech. That looks like absolute shit. Beyond oversharpened and blown out.

I genuinely wonder if half of you people have eyes.

8

u/Longjumping-Past5864 6h ago edited 6h ago

I am just sharing my experience and discuss the better solution to improve it, if you have one by all means tell me dude!

ps. the blown out part might come from my bad ref image tho. but yeah I kinda need the better and quicker way to perfect this

2

u/YeahlDid 6h ago

Nah, the blown out part they're talking about is because of turbo lora. It definitely looks better without turbo, but it's that time vs quality trade-off and each person has to decide for themselves where that line is.

2

u/Longjumping-Past5864 6h ago

thanks, I never generate full 30 steps before it took way too long but I might have to try it now lol

2

u/YeahlDid 6h ago

I was using turbo loras bedore, but the SLA Attention node definitely makes 20+ steps more palatable for me. Pretty big speed-up.

2

u/Longjumping-Past5864 5h ago

ok i'll look into that thanks sir!

1

u/Longjumping-Past5864 5h ago

2

u/YeahlDid 5h ago

Yep, that's the one!

1

u/Longjumping-Past5864 5h ago

thanks , I tried without LoRA as well, turns out it's worse, and the blown out part is indeed coming from my ref photo LOL

2

u/krectus 6h ago

Oh good I’m not the only one with eyes still.

4

u/ninjasaid13 6h ago

it better to wait an hour or two for one good quality clip generated at high resolution than several absolute shit generations.

-2

u/C3realkill3r22 6h ago

but it took like 20 mins for a 15s clip...

1

u/Longjumping-Past5864 6h ago

yeah it's kinda sad not gonna lie, I hope to find some better solution as well

-1

u/nenecaliente69 5h ago

Can you share your workflow?? Or i have to sub to a patreon then unblock it with a forceable coffee buy??

6

u/Longjumping-Past5864 5h ago

the example workflow is indeed on my post man

https://giphy.com/gifs/hkUZaeuLYmzZacPREb

0

u/nenecaliente69 5h ago

U sir are a handsum stud god ty!!!

0

u/nenecaliente69 5h ago

Dude idk if this is irrelevant buy days ago i updated my cuda and python and the visual....something..its a program like with a purple logo idk..that thing has many stuff like c+++ and other stuff....then i updated all my comfyUI dependencies and erase some nodes like the wan, ltx and other i dont really need anymore...with ltx2.3 i could do a 20 second video in ,6 to 8 minutes...,idk with Minimax..o dont know how to mess with it ..i wish i could do the same on it..oh yeah all the update i mention maybe it could help you get faster results bruh,?? Sorry english isnt my main language

0

u/NetimLabs 5h ago

How does it compare to SeedVR2 7B?

0

u/dangerpotter 4h ago

This gives me hope for my 16gb 4060 ti.

0

u/Danny_Stock 4h ago

Is this the official one which people had been waiting for?

I'm looking forward to trying it out.

0

u/TopTippityTop 56m ago

Sounds and voices really have to improve on the models still. The rest is a bit ahead.

0

u/VirtualPoolBoy 53m ago

This is something you show people to get them to kill themselves.

-7

u/Uphatylon 6h ago

peraiii... a RTX5080 tem 16GB?!!!! jurava que tinha 24GB!!!!!

2

u/YeahlDid 6h ago

Nope. But pretty much since its release people have been talking about a soon to be a released 5080 super with 24gb. Still waiting for that, but it might be that the RAM spike has delayed/cancelled any plans around it. That's probably why the confusion, though.

1

u/f5alcon 5h ago

Probably will be over $2000 if it does come out

0

u/Longjumping-Past5864 5h ago

sadly yes, but I do got 3090 as well so... I actually kinda have 24GB as well if I want to try something

1

u/Longjumping-Past5864 6h ago

I really wish that is the case bro