我定义了一个从单个视频流中提取帧的函数,但我不知道如何使用它从多个视频中提取帧
def frames(path):
# Read the video from specified path
cam = cv2.VideoCapture(path)
try:
# creating a folder named data
if not os.path.exists('datav3'):
os.makedirs('datav3')
# if not created then raise error
except OSError:
print ('Error: Creating directory of data')
# frame
currentframe = 0
while(True):
# reading from frame
ret,frame = cam.read()
if ret:
# if video is still left continue creating images
name = './datav3/frame' + str(currentframe) + '.jpg'
print ('Creating...' + name)
# writing the extracted images
cv2.imwrite(name, frame)
# increasing counter so that it will
# show how many frames are created
currentframe += 1
else:
break
# Release all space and windows once done
cam.release()
cv2.destroyAllWindows()