python 读取视频,处理后,实时计算帧数fps的方法


            实时计算每秒的帧数





cap = cv2.VideoCapture("DJI_0008.MOV")

#cap = cv2.VideoCapture(0)

 

# Define the codec and create VideoWriter object

#fourcc = cv2.cv.FOURCC(*'XVID')

fourcc = cv2.VideoWriter_fourcc(*'XVID') 

out = cv2.VideoWriter('output1.avi', fourcc, 20, (1920, 1080))

 

num=0

 

while cap.isOpened():

  # get a frame

  rval, frame = cap.read()

  # save a frame

  if rval==True:

   # frame = cv2.flip(frame,0)

   	# Start time

    start = time.time()

    rclasses, rscores, rbboxes=process_image(frame) #换成自己调用的函数

    # End time

    end = time.time()

  	# Time elapsed

    seconds = end - start

    print( "Time taken : {0} seconds".format(seconds))

  	# Calculate frames per second

    fps = 1 / seconds;

    print( "Estimated frames per second : {0}".format(fps));

    #bboxes_draw_on_img(frame,rclasses,rscores,rbboxes)

    #print(rclasses)

    out.write(frame)

    num=num+1

    print(num)

    #fps = cap.get(cv2.CAP_PROP_FPS)

    #print("Frames per second using video.get(cv2.CAP_PROP_FPS) : {0}".format(fps)) 

  else:

    break

  # show a frame

  cv2.imshow("capture", frame)

  if cv2.waitKey(1) & 0xFF == ord('q'):

    break

cap.release()

out.release()

cv2.destroyAllWindows()





以上这篇python 读取视频,处理后,实时计算帧数fps的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持中文源码网。