利用python+ffmpeg合并B站视频及格式转换的实例代码

利用python+ffmpeg合并b站视频及格式转换 b站客户端下载的视频一般有两种格式：早期的多为blv格式（由flv格式转换而来，音视频轨道在同一文件下）。

如今的多为m4s格式，音频轨视频轨分开 以下为利用ffmpeg简单对文件处理，使其转换为大多数播放器能正常播放的mp4格式 前提：已正常安装ffmpeg

import tkinter as tk
from tkinter import filedialog
import os
import tkinter.messagebox
from tkinter import ttk
maingui=tk.tk()
width = 400
height = 400
screenwidth = maingui.winfo_screenwidth()
screenheight = maingui.winfo_screenheight()
alignstr = '%dx%d+%d+%d' % (width, height, (screenwidth-width)/2, (screenheight-height)/2)
maingui.geometry(alignstr)
maingui.title("转码系统")
def browsedialog():
 root = tk.tk()
 root.withdraw()
 return filedialog.askopenfilename()
def browsedialogto():
 path=browsedialog()
 var.set(path)
def browsedialogto2():
 path=browsedialog()
 var2.set(path)
def browsedialogtof2():
 path=browsedialog()
 varf2.set(path)
def browsedialogtof3():
 path=browsedialog()
 varf3.set(path)
def browsedialogtof4():
 path=browsedialog()
 varf4.set(path)

tab = ttk.notebook(maingui)

frame0 = tk.frame(tab)
tab6 = tab.add(frame0, text = "m4s转mp4")

frame1 = tk.frame(tab)
tab1 = tab.add(frame1, text = "blv,flv转mp4")

frame2 = tk.frame(tab)
tab2 = tab.add(frame2, text = "提取音频")

frame3 = tk.frame(tab)
tab3 = tab.add(frame3, text = "音频截取")

tab.pack(expand = true, fill = tk.both)

#----------------------------------------------------------------------------------------------#
l1=tk.label(frame0,text = "请选择视频文件",font=('arial', 15),width=100,height=2)
l1.pack()
var=tk.stringvar()
var.set("")
e1 = tk.entry(frame0,textvariable = var, show = none)#显示成明文形式
e1.pack()
b1=tk.button(frame0, text='浏览', width=6,
     height=2, command=browsedialogto)
b1.pack()

l2=tk.label(frame0,text = "请选择音频文件",font=('arial', 15),width=100,height=2)
l2.pack()
var2=tk.stringvar()
var2.set("")
e2 = tk.entry(frame0,textvariable = var2, show = none)#显示成明文形式
e2.pack()
b2=tk.button(frame0, text='浏览', width=6,
     height=2, command=browsedialogto2)
b2.pack()

l3=tk.label(frame0,text = "请输入新文件命名",font=('arial', 15),width=100,height=2)
l3.pack()
e3 = tk.entry(frame0, show = none)#显示成明文形式
e3.pack()

def mycmd(path1,path2,name):
 ver=os.popen("ffmpeg -i "+path1+" -i "+path2+" -codec copy "+"c:\\users\\renboyu010214\\desktop\\outputfile\\"+name+".mp4")
 ver.close()
def mycmdmain():
 path1=e1.get()
 path2=e2.get()
 name=e3.get()
 mycmd(path1,path2,name)
 tkinter.messagebox.showinfo(title='success', message="转码成功！")
b4=tk.button(frame0, text='确定', width=6,
     height=2, command=mycmdmain)
b4.pack()
#----------------------------------------------------------------------------------------------#
lf2=tk.label(frame1,text = "请选择blv或flv文件",font=('arial', 15),width=100,height=2)
lf2.pack()
varf2=tk.stringvar()
varf2.set("")
ef2 = tk.entry(frame1,textvariable = varf2, show = none)#显示成明文形式
ef2.pack()
bf2=tk.button(frame1, text='浏览', width=6,
     height=2, command=browsedialogtof2)
bf2.pack()
lf2_1=tk.label(frame1,text = "请输入新文件命名",font=('arial', 15),width=100,height=2)
lf2_1.pack()
ef2_1 = tk.entry(frame1, show = none)#显示成明文形式
ef2_1.pack()
def mycmdmainf2():
 path1=ef2.get()
 name=ef2_1.get()
 ver=os.popen("ffmpeg -i "+path1+" "+"c:\\users\\renboyu010214\\desktop\\outputfile\\"+name+".mp4")
 ver.close()
 tkinter.messagebox.showinfo(title='success', message="转码成功！")
bf2=tk.button(frame1, text='确定', width=6,
     height=2, command=mycmdmainf2)

bf2.pack()

#----------------------------------------------------------------------------------------------#
lf3=tk.label(frame2,text = "请选择视频文件",font=('arial', 15),width=100,height=2)
lf3.pack()
varf3=tk.stringvar()
varf3.set("")
ef3 = tk.entry(frame2,textvariable = varf3, show = none)#显示成明文形式
ef3.pack()
bf3=tk.button(frame2, text='浏览', width=6,
     height=2, command=browsedialogtof3)######
bf3.pack()
lf3_1=tk.label(frame2,text = "请输入新文件命名",font=('arial', 15),width=100,height=2)
lf3_1.pack()
ef3_1 = tk.entry(frame2, show = none)#显示成明文形式
ef3_1.pack()
def mycmdmainf3():
 path1=ef3.get()
 name=ef3_1.get()
 ver=os.popen("ffmpeg -i "+path1+" -acodec copy -vn "+"c:\\users\\renboyu010214\\desktop\\outputfile\\"+name+".aac") 
 #ffmpeg -i f:\video\冠世一战.mp4 -acodec copy -vn f:\video\output.aac
 ver.close()
 tkinter.messagebox.showinfo(title='success', message="音频提取成功！")
bf3=tk.button(frame2, text='确定', width=6,
     height=2, command=mycmdmainf3)

bf3.pack()

#----------------------------------------------------------------------------------------------#

#----------------------------------------------------------------------------------------------#
lf4=tk.label(frame3,text = "请选择音频/视频文件",font=('arial', 15),width=100,height=2)
lf4.pack()
varf4=tk.stringvar()
varf4.set("")
ef4 = tk.entry(frame3,textvariable = varf4, show = none)#显示成明文形式
ef4.pack()
bf4=tk.button(frame3, text='浏览', width=6,
     height=2, command=browsedialogtof4)######
bf4.pack()
lf4_1=tk.label(frame3,text = "请输入新文件命名（音频后缀.mp3 视频后缀.mp4）",font=('arial', 15),width=100,height=2)
lf4_1.pack()
ef4_1 = tk.entry(frame3, show = none)#显示成明文形式
ef4_1.pack()
lf4_2=tk.label(frame3,text = "请输入开始时间（xx:xx:xx）",font=('arial', 15),width=100,height=2)
lf4_2.pack()
ef4_2 = tk.entry(frame3, show = none)#显示成明文形式
ef4_2.pack()
lf4_3=tk.label(frame3,text = "请输入截取时间（xx:xx:xx）",font=('arial', 15),width=100,height=2)
lf4_3.pack()
ef4_3 = tk.entry(frame3, show = none)#显示成明文形式
ef4_3.pack()
def mycmdmainf4():
 path1=ef4.get()
 name=ef4_1.get()
 starttime=ef4_2.get()
 time=ef4_3.get()
 ver=os.popen("ffmpeg -ss "+starttime+" -t "+time+" -i "+path1+" -vcodec copy -acodec copy "+"c:\\users\\renboyu010214\\desktop\\outputfile\\"+name) 
 #ffmpeg -ss 00:00:00 -t 00:00:05 -i input.mp4 -vcodec copy -acodec copy output.mp4 
 ver.close()
 tkinter.messagebox.showinfo(title='success', message="音频/视频截取成功！")
bf4=tk.button(frame3, text='确定', width=6,
     height=2, command=mycmdmainf4)

bf4.pack()

#----------------------------------------------------------------------------------------------#

maingui.mainloop()

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