import cv2
##打开摄像头
cap = cv2.VideoCapture(
0)
##视频大小设置，获取帧宽度，获取帧高度
sz = (
int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
,int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))
fps =
20
# 输出格式
# fourcc = cv2.VideoWriter_fourcc('m','p','4','v')
fourcc = cv2.VideoWriter_fourcc(*
'mp4v')
# fourcc = cv2.VideoWriter_fourcc('m','p','e','g')
# fourcc = cv2.VideoWriter_fourcc(*'mpeg')
##open and set props
vout = cv2.VideoWriter()
vout.open(
'output.mp4',fourcc
,fps
,sz
,True)
cnt =
0
while cnt<
20:
cnt +=
1
print(cnt)
_
, frame = cap.read()
##putText输出到视频上，各参数依次是：照片/添加的文字/左上角坐标/字体/字体大小/颜色/字体粗细
cv2.putText(frame
,str(cnt)
,(
10,20)
,cv2.FONT_HERSHEY_PLAIN
,1,(
0,255,0)
,1,cv2.LINE_AA)
vout.write(frame)
vout.release()
cap.release()
