python3制作视频截取工具_tkinter 截取视频

首先导入相关的库文件：

import cv2
import time
import os
import threading
import win32api
import win32con

import tkinter as tk
from tkinter import messagebox, filedialog
from tkinter import Label, END, Entry, Button, Canvas
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接着写入负责和粘贴的函数：

def get_copy():
    win32api.keybd_event(17, 0, 0, 0)  #ctrl键位码是17
    win32api.keybd_event(67, 0, 0, 0)   #c键位码是67
    win32api.keybd_event(67, 0, win32con.KEYEVENTF_KEYUP, 0)    #释放按键
    win32api.keybd_event(17, 0, win32con.KEYEVENTF_KEYUP, 0)

def get_paste():
    win32api.keybd_event(17, 0, 0, 0)  #ctrl键位码是17
    win32api.keybd_event(86, 0, 0, 0)   #v键位码是86
    win32api.keybd_event(86, 0, win32con.KEYEVENTF_KEYUP, 0)    #释放按键
    win32api.keybd_event(17, 0, win32con.KEYEVENTF_KEYUP, 0)
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然后写入选择目标视频路径和选择文件存放位置的窗口函数：

# 选择文件安放的位置
def get_wen():
    # 使用文件对话框选择文件夹
    data_2 = filedialog.askdirectory(title="选择文件路径")
    data = data_2.replace('/' , r'\\')
    name = os.path.basename(entry_1.get()).split(".")
    all_name = data + r"\\" + name[0] + "_" + time.strftime("%Y_%m_%d_%H_%M_%S",time.localtime()) + "." + name[-1]
    entry_2.delete(0, END)
    entry_2.insert(0, all_name)

# 选择截取的目标视频
def get_kai():
    # 使用文件对话框选择文件
    data_1 = filedialog.askopenfilename(title="选择视频文件")
    data = data_1.replace('/', r'\\')
    entry_1.delete(0, END)
    entry_1.insert(0, data)
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最后写入截取程序的主函数：

# 主函数
def get_zhu():
    cap = cv2.VideoCapture(entry_1.get())  # 打开视频文件
    frames = cap.get(cv2.CAP_PROP_FRAME_COUNT)  # 获得视频文件的帧数
    fps = cap.get(cv2.CAP_PROP_FPS)  # 获得视频文件的帧率
    width = cap.get(cv2.CAP_PROP_FRAME_WIDTH)  # 获得视频文件的帧宽
    height = cap.get(cv2.CAP_PROP_FRAME_HEIGHT)  # 获得视频文件的帧高

    # 创建保存视频文件类对象
    fourcc = cv2.VideoWriter_fourcc(*'XVID')
    out = cv2.VideoWriter(entry_2.get(), fourcc, fps, (int(width), int(height)))

    # 计算视频长度/s
    video_length = frames / fps
    start = int(entry_3.get())
    stop = int(entry_4.get())
    if stop > video_length:
        stop = video_length

    # 设置帧读取的开始位置
    cap.set(cv2.CAP_PROP_POS_FRAMES, start * fps)
    pos = cap.get(cv2.CAP_PROP_POS_FRAMES)  # 获得帧位置

    # 添加进度条参数
    num = 0
    zhong_wen = (stop - start)*fps + 1

    while (pos <= stop * fps):
        ret, frame = cap.read()  # 捕获一帧图像
        out.write(frame)  # 保存帧
        pos = cap.get(cv2.CAP_PROP_POS_FRAMES)

        num += 1
        now_pross = (num / zhong_wen) * 420
        # print(now_pross)
        # 用进度条来显示下载进度
        fill_line = canvas.create_rectangle(1, 1.5, 0, 23, width=0, fill="green")
        canvas.coords(fill_line, (0, 0, now_pross, 60))
        window.update()

    cap.release()
    out.release()
    lable1_4 = Label(window, text="100%", font=('微软雅黑', 15), fg='black', bg="green")
    lable1_4.place(x=300, y=205)
    time.sleep(1)
    messagebox.showinfo(title='操作结果', message='文件下载完成')


def thread_it(func):
    '''将函数打包进线程'''
    # 创建
    t = threading.Thread(target=func)
    # 守护 !!!
    t.setDaemon(True)
    # 启动
    t.start()
    # 阻塞--卡死界面！
    # t.join()
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下面放的是博主设计的交互界面，借用之前的下载器界面改的，读者可以自行设计界面：

# 布置界面
window = tk.Tk()
window.title("博主的视频截取软件")
window.geometry("600x300+490+250")
window.config(bg="#FAFAFA")
# 设置窗口是否可以变化长宽,默认可变
window.resizable(width=False, height=False)

lable1_1 = Label(window, text='目标视频: ', font=('微软雅黑', 20), fg='blue', bg="#FAFAFA")
lable1_1.place(x=20, y=20)

lable1_2 = Label(window, text="存放目录:", font=('微软雅黑', 20), fg='blue', bg="#FAFAFA")
lable1_2.place(x=20, y=72)

# 进度条的实现
lable1_3 = Label(text="裁剪进度:", font=('微软雅黑', 20), bg="#FAFAFA", fg="blue")
lable1_3.place(x=20, y=172)
canvas = Canvas(window, width=420, height=25, bg="#FFF0F5")
canvas.place(x=150, y=180)

lable1_4 = Label(window, text="开始(秒)：", font=('微软雅黑', 20), fg='blue', bg="#FAFAFA")
lable1_4.place(x=20, y=122)

lable1_5 = Label(window, text="结束(秒):", font=('微软雅黑', 20), fg='blue', bg="#FAFAFA")
lable1_5.place(x=320, y=122)

entry_1 = Entry(window, font=('微软雅黑', 18), width=27, bg='white')
entry_1.place(x=150, y=30)

entry_2 = Entry(window, font=('微软雅黑', 18), width=27, bg='white')
entry_2.place(x=150, y=80)

entry_3 = Entry(window, font=('微软雅黑', 18), width=9, bg='white')
entry_3.place(x=150, y=130)

entry_4 = Entry(window, font=('微软雅黑', 18), width=9, bg='white')
entry_4.place(x=440, y=130)

button_1 = Button(window, text="裁剪", font=("隶书", 20), bg='Snow', activeforeground='gold', activebackground='green',
                  fg="black", command=lambda: thread_it(get_zhu))
button_1.place(x=20, y=240, width=120)

button_2 = Button(window, text="退出", font=("隶书", 20), bg='Snow', activeforeground='gold', activebackground='green',
                  fg="black", command=window.quit)
button_2.place(x=450, y=240, width=120)

button_3 = Button(window, text="...", font=("隶书", 15), bg='Snow', activeforeground='gold', activebackground='green',
                  fg="black", command=get_wen)
button_3.place(x=535, y=80, width=40)

button_6 = Button(window, text="...", font=("隶书", 15), bg='Snow', activeforeground='gold', activebackground='green',
                  fg="black", command=get_kai)
button_6.place(x=535, y=30, width=40)

button_4 = Button(window, text="复制", font=("隶书", 20), bg='Snow', activeforeground='gold', activebackground='green',
                  fg="black", command= get_copy)
button_4.place(x=165, y=240, width=120)

button_5 = Button(window, text="粘贴", font=("隶书", 20), bg='Snow', activeforeground='gold', activebackground='green',
                  fg="black", command= get_paste)
button_5.place(x=310, y=240, width=120)

window.mainloop()
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代码到这里就结束了，本文设计思路来源博主——升级打怪，文章地址为：https://www.cnblogs.com/lxz123/p/13608098.html，有疑问的地方可以评论或私信博主。