Exception in callback _ProactorBasePipeTransport._call_connection_lost(None)

While generating 5s videos, I get an exception at 3.5 seconds
(I can generate 3.5s videos)

```
xception in callback _ProactorBasePipeTransport._call_connection_lost(None)
handle:
Traceback (most recent call last):
File "asyncio\events.py", line 80, in _run
File "asyncio\proactor_events.py", line 162, in _call_connection_lost
ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host
Exception in callback _ProactorBasePipeTransport._call_connection_lost(None)
handle:
Traceback (most recent call last):
File "asyncio\events.py", line 80, in _run
File "asyncio\proactor_events.py", line 162, in _call_connection_lost
ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host
100%|██████████████████████████████████████████████████████████████████████████████████| 25/25 [04:19<00:00, 10.37s/it]
Offloading DynamicSwap_HunyuanVideoTransformer3DModelPacked from cuda:0 to preserve memory: 8 GB
Loaded AutoencoderKLHunyuanVideo to cuda:0 as complete.
Unloaded AutoencoderKLHunyuanVideo as complete.
Decoded. Current latent shape torch.Size([1, 16, 37, 88, 68]); pixel shape torch.Size([1, 3, 145, 704, 544])
Exception in callback _ProactorBasePipeTransport._call_connection_lost(None)
handle:
Traceback (most recent call last):
File "asyncio\events.py", line 80, in _run
File "asyncio\proactor_events.py", line 162, in _call_connection_lost
ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host
```

I got a 3800X with 64GB of system RAM and a 3090 GPU.
No other tasking actions going on at the time.

Start with the reported Windows asyncio traceback in asyncio/events.py and asyncio/proactor_events.py, then reproduce generation of a 5-second video rather than a 3.5-second video on the stated hardware. Determine whether the connection-reset callback is tied to the generation or decoding stage; done means the longer generation completes without this unhandled exception.

Written by the indexing model from the issue text.