嗨，伙计们，我试图用python制作屏幕录制程序，但我的程序运行15帧/秒，我如何提高到每秒60帧

Question

import cv2 
import numpy as np
import pyautogui 
import time
from win32api import GetSystemMetrics

width = GetSystemMetrics(0) #it takes my default system resolution
height = GetSystemMetrics(1)
dim = (width,heigth)#tuple of my default system resolution

f = cv2.VideoWriter_fourcc(*"XVID") # i dont know what this is
output = cv2.VideoWriter("test.mp4",f,60.0,dim)
#name of the video, some stuffs, fps of video, dimension of video

try:
#this loop takes 15 screenshot per second and write it to output variable and its make 15fps 
#video
while True:

image = pyautogui.screenshot() #takes screenshot
frame_1 = np.array(image) #converting to arrays
frame = cv2.cvtColor(frame_1,cv2.COLOR_BGR2RGB) #changing the color (rgb)
output. Write(frame)#writes array to output variable
#this loop make it 15 times per second
print(i+"r")
i = time.ctime() # i wrote it 'cause it shows how fast the loop is running per second

except KeyboardInterrupt:
pass

output. Release()

这段代码截取了屏幕截图，并将其写入"输出"变量，然后以60.0fps的速度播放问题是：我的代码每秒拍摄15张屏幕截图，每秒播放60帧，所以当你看视频时，你会很快看到所有东西我该怎么解决？请帮助

Answer 1

pyautogui.screenshot((捕获的时间太长

这个库在我的M1 Mac 中需要250毫秒

您应该使用另一个库以获得更好的性能

像这样检查

class Checktime():
def __init__(self) -> None:
delta_second = 0.0
self.s = datetime.now().second
self.m = datetime.now().microsecond
def delta(self, checkpoint):
d = (datetime.now().second-self.s) + (datetime.now().microsecond-self.m)/1000000
self.s = datetime.now().second
self.m = datetime.now().microsecond
print(checkpoint, d)
try:
#this loop takes 15 screenshot per second and write it to output variable and its make 15fps 
#video
c = Checktime()
while (True):

c.delta(1)
image = pyautogui.screenshot() #takes screenshot
c.delta(2)
frame_1 = np.array(image) #converting to arrays
c.delta(3)
frame = cv2.cvtColor(frame_1,cv2.COLOR_BGR2RGB) #changing the color (rgb)
c.delta(4)
output.write(frame)#writes array to output variable
c.delta(5)
#this loop make it 15 times per second

i = time.ctime() # i wrote it 'cause it shows how fast the loop is running per second
c.delta(6)
print(i+"r")
c.delta(7)

结果

1 5e-06
2 0.249821
3 0.00866
4 0.002012
5 3.6e-05
6 1.4e-05
Mon Aug 29 21:23:50 2022
7 7e-06

您可以检查截图((是否在pyautogui 的__init__.py中定义

from pyscreeze import center, grab, pixel, pixelMatchesColor, screenshot

并且在pyscreeze的_init_.py中，您可以检查函数

我找不到屏幕截图的任何延迟选项

您可以直接尝试pyscreeze或使用其他库

def _screenshot_win32(imageFilename=None, region=None):
def _screenshot_osx(imageFilename=None, region=None):
def _screenshot_linux(imageFilename=None, region=None):