Wan 2.2: Memory crashes when the Save Video node tries to save the clips generated

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

It should save the video clips smoothly.

### Actual Behavior

Memory crashes frequently occur in the official workflow.

### Steps to Reproduce

Whenever you try to save the videos with the node _Save Video_, there is about 60% of the chances to crash.

### Debug Logs

```powershell
[process crashed with code 3221225477 (0xC0000005)]

****
Physical RAM: 40624 MB Available / 65536 MB Total
Paging Files: 101328 MB Available / 106683 MB Total (Initial 0 MB, Maximum 0 MB)
****

The following is an analysis of the exit codes. This may not be accurate and it is for your reference only.
System exit code name: ACCESS_VIOLATION
System exit code description: The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

Crash thread traceback:
Windows fatal exception: access violation

Note: Exit codes and their descriptions are not sufficient to diagnose the problem! Please upload the complete diagnostic log with codes.
```

### Other

_No response_