pygame+opencv实现读取视频帧的方法示例

import pygame
from pygame.locals import *
import cv2
import sys
import time

FPS = 30
FramePerSec = pygame.time.Clock()

video_path = './Selected Stimuli/noaudio_c_001_critical_swerve.mp4'
video = cv2.VideoCapture(video_path)

pygame.init()
pygame.display.set_caption('OpenCV Video Player on Pygame')

screen = pygame.display.set_mode((1280, 720), 0, 32)
screen.fill([0,0,0])
num = 0

while True :

    T1 = time.time()
    ret, frame = video.read()
    if ret == False:
        print('Total Time:', time.time()-T0)
        sys.exit()

    frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
    frame = cv2.transpose(frame)
    frame = pygame.surfarray.make_surface(frame)
    screen.blit(frame, (0,0))
    if num == 0:
        T0 = time.time()
    pygame.display.update()
    FramePerSec.tick(FPS)

    num += 1
    print('freq time:{}, frame num: {}'.format(time.time()-T1, num))

    for event in pygame.event.get():
        if event.type == QUIT:
            sys.exit()

import pygame
from pygame.locals import *
import cv2
import sys
import time

video_path = 'out1.avi'
video = cv2.VideoCapture(video_path)

FPS = int(round(video.get(cv2.CAP_PROP_FPS)))

FramePerSec = pygame.time.Clock()

Width = int(video.get(cv2.CAP_PROP_FRAME_WIDTH))
Height = int(video.get(cv2.CAP_PROP_FRAME_HEIGHT))

pygame.init()
pygame.display.set_caption('OpenCV Video Player on Pygame')

screen = pygame.display.set_mode((Width, Height), 0, 32)
screen.fill([0,0,0])
num = 0

while True :

    if num == 0:
        T0 = time.time()

    if time.time()-T0 > num*(1./FPS):

        ret, frame = video.read()
        TimeStamp = video.get(cv2.CAP_PROP_POS_MSEC)

        if ret == False:
            print('Total Time:', time.time()-T0)
            pygame.quit()
            sys.exit()

        frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
        frame = cv2.transpose(frame)
        frame = pygame.surfarray.make_surface(frame)
        screen.blit(frame, (0,0))

        pygame.display.update()
        
        num += 1

    for event in pygame.event.get():
        if event.type == QUIT:
            sys.exit()