|——datasets
  |——action1
   action1_1.gif
   action1_2.gif
   ......
  |——action2
   action2_1.gif
   action2_2.gif
   ......
import cv2
import os
from PIL import Image
video_path = 'PATH_ROOT/datasets/' #视频或gif图像的路径
save_path = 'PATH_ROOT/save/' #保存帧的路径
action_list = os.listdir(video_path)
for action in action_list:
 if not os.path.exists(save_path+action):
  os.mkdir(save_path+action)
 video_list = os.listdir(video_path+action)
 for video in video_list:
  prefix = video.split('.')[0]
  if not os.path.exists(save_path+action+'/'+prefix):
   os.mkdir(save_path+action+'/'+prefix)
  save_name = save_path + action + '/' + prefix + '/'
  video_name = video_path+action+'/'+video
  name = video_name.split('.')[1]
  if name == "avi":
   cap = cv2.VideoCapture(video_name)
   fps = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
   fps_count = 0
   for i in range(fps):
    ret, frame = cap.read()
    if ret:
     cv2.imwrite(save_name + str(10000 + fps_count) + '.jpg', frame)
     fps_count += 1
  if name == "gif":
   im = Image.open(video_name)
   #当打开一个序列文件时，PIL库自动加载第一帧。
   #可以使用seek()函数和tell()函数在不同帧之间移动。实现保存
   try:
    while True:
     current = im.tell()
     #为了保存为jpg格式，需要转化。否则可以保存为png
     img = im.convert('RGB') 
     img.save(save_name+'/'+str(10000+current)+'.jpg')
     im.seek(current + 1)
   except EOFError:
    pass

from PIL import Image
import os
gifFileName = 'test.gif'
#使用Image模块的open()方法打开gif动态图像时，默认是第一帧
im = Image.open(gifFileName)
pngDir = gifFileName[:-4]
#创建存放每帧图片的文件夹
os.mkdir(pngDir)
try:
 while True:
  #保存当前帧图片
  current = im.tell()
  im.save(pngDir+'/'+str(current)+'.png')
  #获取下一帧图片
  im.seek(current+1)
except EOFError:
  pass