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import cv2
import argparse
import os
def parse_args ( ) :
"""
Parse input arguments
"""
parser = argparse . ArgumentParser ( description = ' Process pic ' )
parser . add_argument ( ' --input ' , help = ' video to process ' , dest = ' input ' , default = None , type = str )
parser . add_argument ( ' --output ' , help = ' pic to store ' , dest = ' output ' , default = None , type = str )
# default为间隔多少帧截取一张图片
parser . add_argument ( ' --skip_frame ' , dest = ' skip_frame ' , help = ' skip number of video ' , default = 10 , type = int )
# input为输入视频的路径 ，
args = parser . parse_args ( [ ' --input ' , r ' C: \ Users \ xinluo \ PycharmProjects \ pythonProject \ 1234.mp4 ' , ' --output ' , r ' C: \ Users \ xinluo \ PycharmProjects \ pythonProject \ Saved Pictures ' ] )
return args
def process_video ( i_video , o_video , num ) :
cap = cv2 . VideoCapture ( i_video )
num_frame = cap . get ( cv2 . CAP_PROP_FRAME_COUNT )
expand_name = ' .jpg '
if not cap . isOpened ( ) :
print ( " Please check the path. " )
cnt = 0
count = 0
while 1 :
ret , frame = cap . read ( )
cnt + = 1
# how
# many
# frame
# to
# cut
if cnt % num == 0 :
count + = 1
cv2 . imwrite ( os . path . join ( o_video , str ( count ) + expand_name ) , frame )
if not ret :
break
if __name__ == ' __main__ ' :
args = parse_args ( )
if not os . path . exists ( args . output ) :
os . makedirs ( args . output )
print ( ' Called with args: ' )
print ( args )
process_video ( args . input , args . output , args . skip_frame )
