import cv2
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import win32com.client
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import re
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def get_camera_index_by_hardware_id():
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# 获取所有摄像头硬件信息
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wmi = win32com.client.GetObject("winmgmts:")
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cameras = []
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wmi_instances_of = wmi.InstancesOf("Win32_PnPEntity")
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for item in wmi_instances_of:
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if "Camera" == getattr(item, 'PNPClass', None):
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# 提取设备实例路径（如 USB\VID_046D&PID_0825\...）
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device_id = item.DeviceID
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cameras.append({
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"name": item.Name,
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"device_id": device_id
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})
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# 遍历 OpenCV 索引，获取硬件信息
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opencv_indices = []
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for index in range(0, 10):
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cap = cv2.VideoCapture(index, cv2.CAP_DSHOW) # 使用 DirectShow 接口
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if not cap.isOpened():
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continue
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# 获取 OpenCV 捕获设备的硬件路径（需转换格式）
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cap_props = cap.getBackendName()
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hw_info = str(cap.get(cv2.CAP_PROP_HW_DEVICE)) # 部分驱动支持
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# 匹配设备实例路径中的关键标识符（如 VID/PID）
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for cam in cameras:
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# 转换格式（例如：将 USB\VID_XXXX&PID_XXXX 与硬件路径匹配）
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if re.search(cam["device_id"].split("\\")[-1], hw_info, re.IGNORECASE):
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opencv_indices.append({
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"index": index,
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"name": cam["name"],
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"device_id": cam["device_id"]
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})
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break
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cap.release()
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return opencv_indices
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# 测试代码
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cameras = get_camera_index_by_hardware_id()
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for cam in cameras:
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print(f"Index: {cam['index']} | Name: {cam['name']}")
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