Python OpenCV实现视频分帧
本文实例为大家分享了PythonOpenCV实现视频分帧的具体代码，供大家参考，具体内容如下
#coding=utf-8
importos
importcv2
videos_src_path="/home/wgp/视频/"
video_formats=[".MP4",".MOV"]
frames_save_path="/home/wgp/视频/"
width=320
height=240
time_interval=50
defvideo2frame(video_src_path,formats,frame_save_path,frame_width,frame_height,interval):
"""
将视频按固定间隔读取写入图片
:paramvideo_src_path:视频存放路径
:paramformats:包含的所有视频格式
:paramframe_save_path:保存路径
:paramframe_width:保存帧宽
:paramframe_height:保存帧高
:paraminterval:保存帧间隔
:return:帧图片
"""
videos=os.listdir(video_src_path)
deffilter_format(x,all_formats):
ifx[-4:]inall_formats:
returnTrue
else:
returnFalse
videos=filter(lambdax:filter_format(x,formats),videos)
foreach_videoinvideos:
print"正在读取视频：",each_video
each_video_name=each_video[:-4]
os.mkdir(frame_save_path+each_video_name)
each_video_save_full_path=os.path.join(frame_save_path,each_video_name)+"/"
each_video_full_path=os.path.join(video_src_path,each_video)
cap=cv2.VideoCapture(each_video_full_path)
frame_index=0
frame_count=0
ifcap.isOpened():
success=True
else:
success=False
print("读取失败!")
while(success):
success,frame=cap.read()
print"--->正在读取第%d帧:"%frame_index,success
ifframe_index%interval==0:
resize_frame=cv2.resize(frame,(frame_width,frame_height),interpolation=cv2.INTER_AREA)
#cv2.imwrite(each_video_save_full_path+each_video_name+"_%d.jpg"%frame_index,resize_frame)
cv2.imwrite(each_video_save_full_path+"%d.jpg"%frame_count,resize_frame)
frame_count+=1
frame_index+=1
cap.release()
if__name__=='__main__':
video2frame(videos_src_path,video_formats,frames_save_path,width,height,time_interval)
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