In this article, we will continue to develop the video editing application which we have started a few days ago. In this chapter, we are going to loop the original video twice besides resizing it as before. There is only one line of code we need to change in the previous program to get the job done. Below is the revised program.
from tkinter import * from tkinter import filedialog import os import subprocess import tkinter.ttk as tk win = Tk() # Create instance win.title("Manipulate Video") # Add a title win.resizable(0, 0) # Disable resizing the GUI win.configure(background='white') # change background color # Create a label aLabel = Label(win, text="Select video size and video", anchor="center", padx=13, pady=10, relief=RAISED) aLabel.grid(column=0, row=0, sticky=W+E) aLabel.configure(foreground="black") aLabel.configure(background="white") aLabel.configure(wraplength=110) # Create a combo box vid_size = StringVar() # create a string variable preferSize = tk.Combobox(win, textvariable=vid_size) preferSize['values'] = (1920, 1280, 854, 640) # video width in pixels preferSize.grid(column=0, row=1) # the position of combo box preferSize.current(0) # select item one # Open a video file def openVideo(): fullfilename = filedialog.askopenfilename(initialdir="/", title="Select a file", filetypes=[("Video file", "*.mp4; *.avi ")]) # select a video file from the hard drive if(fullfilename != ''): scale_vid = preferSize.get() # retrieve value in the comno box new_size = str(scale_vid) dir_path = os.path.dirname(os.path.realpath(fullfilename)) os.chdir(dir_path) f = new_size + '.mp4' # the new output file name and format subprocess.call(['ffmpeg', '-stream_loop', '2', '-i', fullfilename, '-vf', 'scale=' + new_size + ':-1', '-y', f]) # resize and loop the video with ffmpeg action_vid = Button(win, text="Open Video", command=openVideo, padx=2) action_vid.grid(column=0, row=2, sticky=E+W) action_vid.configure(background='black') action_vid.configure(foreground='white') win.mainloop()
The above program will also overwrite the previous file with the same name as the output file without needs to ask the permission from the user.
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