[GH-ISSUE #364] no English documentation on how to use Model Fusion feature #180

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opened 2026-10-20 09:56:21 +00:00 by bsakaguchi · 3 comments

bsakaguchi commented

2026-10-20 09:56:21 +00:00

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Originally created by @jfrankdev on GitHub (May 28, 2023).
Original GitHub issue: https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/issues/364

When you go the ckpt processing tab it is unclear how to use this feature. I can't find any English documentation on it and I have not been able to make it work just trying stuff. I get this error:

File "C:\Users\user\Desktop\rvc-beta\train\process_ckpt.py", line 212, in merge
cfg = ckpt1["config"]
KeyError: 'config'

Originally created by @jfrankdev on GitHub (May 28, 2023). Original GitHub issue: https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/issues/364 When you go the ckpt processing tab it is unclear how to use this feature. I can't find any English documentation on it and I have not been able to make it work just trying stuff. I get this error: File "C:\Users\user\Desktop\rvc-beta\train\process_ckpt.py", line 212, in merge cfg = ckpt1["config"] KeyError: 'config'

bsakaguchi added the

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2026-10-20 09:56:21 +00:00

bsakaguchi commented

2026-10-20 09:56:22 +00:00

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@harukaxxxx commented on GitHub (May 28, 2023):

use pth in weight folder, and remeber write down model name.
here is a sample in chinese gui.

@harukaxxxx commented on GitHub (May 28, 2023): use pth in weight folder, and remeber write down model name. here is a sample in chinese gui. ![image](https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/assets/5777085/1edcb933-6148-43cb-bf1a-4908fdfcc5de)

bsakaguchi commented

2026-10-20 09:56:22 +00:00

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@jfrankdev commented on GitHub (Jun 16, 2023):

With your suggestions I still receive this error when I click "Fusion.":

Traceback (most recent call last):
  File "C:\Users\user\Desktop\rvc-beta\train\process_ckpt.py", line 212, in merge
    cfg = ckpt1["config"]
KeyError: 'config'

@jfrankdev commented on GitHub (Jun 16, 2023): With your suggestions I still receive this error when I click "Fusion.": ``` Traceback (most recent call last): File "C:\Users\user\Desktop\rvc-beta\train\process_ckpt.py", line 212, in merge cfg = ckpt1["config"] KeyError: 'config' ```

bsakaguchi commented

2026-10-20 09:56:22 +00:00

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@dhstsw commented on GitHub (Jun 29, 2023):

I manage to get a fusion with 2 models, BUY:

-1- no index file.
-2- When i load the new file created for inference i always get this error:

loading weights/mix1.pth
gin_channels: 256 self.spk_embed_dim: 109
Traceback (most recent call last):
  File "J:\RVC-beta\runtime\lib\site-packages\gradio\routes.py", line 321, in run_predict
    output = await app.blocks.process_api(
  File "J:\RVC-beta\runtime\lib\site-packages\gradio\blocks.py", line 1006, in process_api
    result = await self.call_function(fn_index, inputs, iterator, request)
  File "J:\RVC-beta\runtime\lib\site-packages\gradio\blocks.py", line 847, in call_function
    prediction = await anyio.to_thread.run_sync(
  File "J:\RVC-beta\runtime\lib\site-packages\anyio\to_thread.py", line 31, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
  File "J:\RVC-beta\runtime\lib\site-packages\anyio\_backends\_asyncio.py", line 937, in run_sync_in_worker_thread
    return await future
  File "J:\RVC-beta\runtime\lib\site-packages\anyio\_backends\_asyncio.py", line 867, in run
    result = context.run(func, *args)
  File "J:\RVC-beta\infer-web.py", line 420, in get_vc
    print(net_g.load_state_dict(cpt["weight"], strict=False))
  File "J:\RVC-beta\runtime\lib\site-packages\torch\nn\modules\module.py", line 2041, in load_state_dict
    raise RuntimeError('Error(s) in loading state_dict for {}:\n\t{}'.format(
RuntimeError: Error(s) in loading state_dict for SynthesizerTrnMs768NSFsid_nono:
        size mismatch for enc_p.emb_phone.weight: copying a param with shape torch.Size([192, 256]) from checkpoint, the shape in current model is torch.Size([192, 768]).

@dhstsw commented on GitHub (Jun 29, 2023): I manage to get a fusion with 2 models, BUY: -1- no index file. -2- When i load the new file created for inference i always get this error: ``` loading weights/mix1.pth gin_channels: 256 self.spk_embed_dim: 109 Traceback (most recent call last): File "J:\RVC-beta\runtime\lib\site-packages\gradio\routes.py", line 321, in run_predict output = await app.blocks.process_api( File "J:\RVC-beta\runtime\lib\site-packages\gradio\blocks.py", line 1006, in process_api result = await self.call_function(fn_index, inputs, iterator, request) File "J:\RVC-beta\runtime\lib\site-packages\gradio\blocks.py", line 847, in call_function prediction = await anyio.to_thread.run_sync( File "J:\RVC-beta\runtime\lib\site-packages\anyio\to_thread.py", line 31, in run_sync return await get_asynclib().run_sync_in_worker_thread( File "J:\RVC-beta\runtime\lib\site-packages\anyio\_backends\_asyncio.py", line 937, in run_sync_in_worker_thread return await future File "J:\RVC-beta\runtime\lib\site-packages\anyio\_backends\_asyncio.py", line 867, in run result = context.run(func, *args) File "J:\RVC-beta\infer-web.py", line 420, in get_vc print(net_g.load_state_dict(cpt["weight"], strict=False)) File "J:\RVC-beta\runtime\lib\site-packages\torch\nn\modules\module.py", line 2041, in load_state_dict raise RuntimeError('Error(s) in loading state_dict for {}:\n\t{}'.format( RuntimeError: Error(s) in loading state_dict for SynthesizerTrnMs768NSFsid_nono: size mismatch for enc_p.emb_phone.weight: copying a param with shape torch.Size([192, 256]) from checkpoint, the shape in current model is torch.Size([192, 768]). ```