Further modifying the video editing application

Our video editing application project is nearly completed so then let us continue to modify it in this post. In this new code edition we will include the repeat scale box which allows the user to select how many times he wishes the video to repeat, the fps scale box which allows the user to select the fps for the new video, besides that we have also included the video format combo box where the user can select which new video format he wishes his new video to have. Below is the entire program.

from tkinter import *
from tkinter import filedialog
import os
import subprocess
import tkinter.ttk as tk

win = Tk() # Create tk instance
win.title("NeW Vid") # Add a title
win.resizable(0, 0) # Disable resizing the GUI
win.configure(background='white') # change background color

mainframe = Frame(win) # create a frame
mainframe.pack()

eqFrame = Frame(win) # create eq frame
eqFrame.pack(side = TOP, fill=X)

buttonFrame = Frame(win) # create a button frame
buttonFrame.pack(side = BOTTOM, fill=X)

# Create a label and scale box for eq
contrast_variable = DoubleVar()
contrast = Scale(eqFrame, from_=float(-2.00), to=float(2.00), orient=HORIZONTAL, label="CONTRAST", digits=3, resolution=0.01, variable=contrast_variable)
contrast.set(1)
contrast.pack(side = LEFT)
brightness_variable = DoubleVar()
brightness = Scale(eqFrame, from_=float(-1.00), to=float(1.00), orient=HORIZONTAL, label="BRIGHTNESS", digits=3, resolution=0.01, variable=brightness_variable)
brightness.pack(side = LEFT)
saturation_variable = DoubleVar()
saturation = Scale(eqFrame, from_=float(0.00), to=float(3.00), orient=HORIZONTAL, label="SATURATION", digits=3, resolution=0.01, variable=saturation_variable)
saturation.set(1)
saturation.pack(side = LEFT)
gamma_variable = DoubleVar()
gamma = Scale(eqFrame, from_=float(0.10), to=float(10.00), orient=HORIZONTAL, label="GAMMA", digits=4, resolution=0.01, variable=gamma_variable)
gamma.set(1)
gamma.pack(side = LEFT)
loop_variable = DoubleVar()
loop = Scale(eqFrame, from_=float(0), to=float(10), orient=HORIZONTAL, label="REPEAT", digits=2, resolution=1, variable=loop_variable)
loop.pack(side = LEFT)
fr_variable = DoubleVar()
fr = Scale(eqFrame, from_=float(9), to=float(60), orient=HORIZONTAL, label="FPS", digits=2, resolution=1, variable=fr_variable)
fr.set(24)
fr.pack(side = LEFT)

# Create a combo box
vid_size = StringVar() # create a string variable
preferSize = tk.Combobox(mainframe, textvariable=vid_size) 
preferSize['values'] = (1920, 1280, 854, 640) # video width in pixels
preferSize.current(0) # select item one 
preferSize.pack(side = LEFT)

# Create a combo box
vid_format = StringVar() # create a string variable
preferFormat = tk.Combobox(mainframe, textvariable=vid_format) 
preferFormat['values'] = ('.mp4', '.webm', '.avi', '.wmv', '.mpg', '.ogv') # video format
preferFormat.current(0) # select item one 
preferFormat.pack(side = LEFT)

removeAudioVal = IntVar()
removeAudio = tk.Checkbutton(mainframe, text="Remove Audio", variable=removeAudioVal)
removeAudio.pack(side = LEFT, padx=3)

newAudio = IntVar()
aNewAudio = tk.Checkbutton(mainframe, text="New Audio", variable=newAudio)
aNewAudio.pack(side = LEFT, padx=2)

# 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
        audiofilename = ''
        if(newAudio.get() == 1):
                audiofilename = filedialog.askopenfilename(initialdir="/", title="Select a file", filetypes=[("Audio file", "*.wav; *.ogg ")]) # select a new audio file from the hard drive
                
        if(fullfilename != ''): 

                scale_vid = preferSize.get() # retrieve value from the comno box
                new_size = str(scale_vid)
                dir_path = os.path.dirname(os.path.realpath(fullfilename))

                file_extension = fullfilename.split('.')[-1] # extract the video format from the original video

                os.chdir(dir_path) # change the directory to the original file's directory

                f = new_size  + '.' + file_extension # the new output file name
                f2 = '0' + f # second video

                noAudio = removeAudioVal.get() # get the checkbox state for audio 

                subprocess.call(['ffmpeg', '-stream_loop', str(loop_variable.get()), '-i', fullfilename, '-vf', 'scale=' + new_size + ':-1', '-y', '-r', str(fr_variable.get()), f]) # resize, speedup and loop the video with ffmpeg
               
                #subprocess.call(['ffmpeg', '-i', f, '-ss', '00:02:30', '-y', f2]) # create animated gif starting from 2 minutes and 30 seconds to the end
                

                if(noAudio == 1):
                        subprocess.call(['ffmpeg', '-i', f, '-c', 'copy', '-y', '-an', f2]) # remove audio from the original video
                
                if(audiofilename != '' and noAudio == 1 and newAudio.get() == 1):
                        subprocess.call(['ffmpeg', '-i', f2, '-i', audiofilename, '-shortest', '-c:v', 'copy', '-c:a', 'aac', '-b:a', '256k', '-y', f]) # add audio to the original video, trim either the audio or video depends on which one is longer

                subprocess.call(['ffmpeg', '-i', f, '-vf', 'eq=contrast=' + str(contrast_variable.get()) +':brightness='+ str(brightness_variable.get()) +':saturation=' + str(saturation_variable.get()) +':gamma='+ str(gamma_variable.get()), '-y', f2]) # adjust the saturation, gamma, contrast and brightness of video
                f3 = f + vid_format.get() # The final video format

                if(f3.split('.')[-1] != f2.split('.')[-1]):
                        subprocess.call(['ffmpeg', '-i', f2, '-y', f3]) # converting the video with ffmpeg
                        os.remove(f2) # remove two videos
                        os.remove(f)
                else:
                        os.remove(f) # remove a video

action_vid = tk.Button(buttonFrame, text="Open Video", command=openVideo)
action_vid.pack(fill=X)

win.mainloop()

If you run the above program you will get below outcome.

The new video editor user interface

The above program needs more edits so stay tuned for the next chapter.

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george_perec

Hi. Many thanks for your tutorials. Please, tell us how to record a screencast and scrinshots of desktop with ffmpeg and python tkinter.