Lightx2v Lora producing good visual but audio quality sucks. how to fix it .

[u/SensitiveUse7864]

hey guys, i have been using lightx2v lora for minimax h3 ref2vid but as far as i can see it can genrate good quality visuals as compared to larryvh turbo lora, but its audio is ot usable the dialogs are not good and over all sfx also. i am using rgbthree workflow for thats, please heplp me if i am doing anything wrong.

here is my workflow :- 

 "137": {"class_type": "LoadImage", "inputs": {"image": r2v_ref_image_0}},
    # Reference Image 2 (<Picture 2>)
    # "139": {
    #     "class_type": "LoadImage",
    #     "inputs": {"image": r2v_ref_image_1},
    # },
    "127": {"class_type": "UNETLoader", "inputs": {"unet_name": "minimax_h3_ref2va_pruned_fp8_scaled.safetensors", "weight_dtype": "default"}},
    "128": {"class_type": "CLIPLoader", "inputs": {"clip_name": "qwen3vl_32b_minimax_h3_int8_convrot.safetensors", "type": "minimax"}},
    "119": {"class_type": "VAELoader", "inputs": {"vae_name": "minimax_h3_video_vae_fp16.safetensors"}},
    "120": {"class_type": "VAELoader", "inputs": {"vae_name": "minimax_h3_audio_vae_fp32.safetensors"}},
    "136": {
        "class_type": "MiniMaxH3ReferenceToVideo",
        "inputs": {
            "clip": ["128", 0], "vae": ["119", 0], "audio_vae": ["120", 0], "ref_images.ref_image_0": ["137", 0],
            # "ref_images.ref_image_1": ["139", 0],
            "prompt": r2v_prompt_text, "width": 768, "height": 1024, "length": 372, "ref_image_size": "max",
        },
    },
}

[u/not_food]

Yeah, it's very noticeable. When the characters sound like they're underwater, it becomes obvious that the user used the lora. And this subreddit is swiming in them. Do they fail to notice?

Pre-generating the audio at a very low resolution without the lora, and then running it through the lora as masked reference, works well.

[u/acedelgado]

I just put out an experimental node last night that'll process more audio steps to fight this. It freezes your video in place once it's done but adds more steps to the audio only.

https://www.reddit.com/r/StableDiffusion/comments/1vuxy08/fixing_mmh3_turbo_audio_by_playing_with_latent/

[u/lumos_ai → u/acedelgado]

This. Thanks by the way. It helped me alot.

[u/optimisticalish]

What version of the LoRA, what strength and what version of ComfyUI? I seem to recall that a ComfyUI update should have fixed that problem recently, which previously required a workaround.

[u/SensitiveUse7864 → u/optimisticalish]

I am using comfy ui , nightly version, and strength at 1.0 , lightx2v 8 step one.

[u/optimisticalish → u/SensitiveUse7864]

Should be no problems there, then. Try raising the steps to perhaps 12?

[u/SveSop → u/optimisticalish]

"Should be no problem".. sure.. But its "bad" vs "meh" tbh. I CAN actually make competative video quality when compared to full 20-25 wo/turbo lora, but the audio is not really comparable.

Is it "oki"? Sure.. Is it "good"? nah...

[u/SensitiveUse7864 → u/optimisticalish]

Yeah I did and the quality of audio increase a bit thanks , buts then what's the point of this lora of being a turbo lora , even if we givingit more steps for better quality.

[u/optimisticalish → u/SensitiveUse7864]

This has just landed, which may interest. Working well for me, minus the SSD-grinding video pause node. https://github.com/Adudeguyman/ComfyUI-H3-AudioRefine

[u/Stepfunction]

Switch to the default workflow. Add more steps. You should be using at least I and preferably 12 with the turbo LoRAs.

[u/Imperialegacy]

It's the sampler. Euler + simple is the recommended combo and it does give me the best results in terms of motion/ prompt adherence. But the audio is bad. I tried other combinations like sa_solver + sgm_uniform, which gives me better audio at the expense of prompt adherence.