Create max_fps_test.py

max_fps_test.py

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+import cv2
+import time
+
+cap = cv2.VideoCapture(0)
+
+# 对应你摄像头640*480，硬件上限30fps
+W = 640
+H = 480
+MAX_HW_FPS = 30
+
+cap.set(cv2.CAP_PROP_FRAME_WIDTH, W)
+cap.set(cv2.CAP_PROP_FRAME_HEIGHT, H)
+cap.set(cv2.CAP_PROP_FPS, MAX_HW_FPS)
+
+total_frame = 0
+start_all = time.time()
+last_print = time.time()
+
+while True:
+    ret, frame = cap.read()
+    if not ret:
+        print("摄像头读取失败")
+        break
+    total_frame += 1
+    now = time.time()
+    # 每2秒打印实时平均
+    if now - last_print >= 2:
+        instant_fps = total_frame / (now - start_all)
+        print(f"实时平均FPS：{instant_fps:.2f} / 硬件上限{MAX_HW_FPS}")
+        last_print = now
+
+    cv2.imshow("最高帧率测试", frame)
+    if cv2.waitKey(1) & 0xFF == ord('q'):
+        break
+
+# 退出后输出最终稳定最高帧率
+total_time = now - start_all
+avg_fps = total_frame / total_time
+print("\n========测试结束========")
+print(f"总帧数：{total_frame}  总时长：{total_time:.2f}s")
+print(f"该分辨率实测稳定最高帧率：{avg_fps:.2f} FPS")
+
+cap.release()
+cv2.destroyAllWindows()