Speaking about ffmpeg, the free software for editing video with a command line interface, I want to tell you how to record just the content of a window on the screen. I will show you how I did it in my last post having this as result:
This was the result of the little script below. As you can see, we gave the window (root) a title (“Trace”), so we added that title in the command of ffmpeg to target it for the recording. You have to check for your audio device too. I will put the commands to do it at the end of the code.
from tkinter import *
def copycat(sv, lb):
lb['text'] = sv.get()
def labentry():
sv = StringVar() # Create the StringVar
sv.trace("w", lambda name, index, mode, sv=sv: copycat(sv, lb))
# copycat is usually called callback
e = Entry(root, textvariable=sv)
lb = Label(root, text = "")
lb.pack()
e.pack()
e.focus()
root = Tk()
root.title("Trace")
labentry() # => create label and entry
root.mainloop()
You can see the root.title at the end of the code.
How to record a window
ffmpeg -rtbufsize 1500M -f dshow -i audio="Microfono (8- Logitech USB Headset)" -f gdigrab -framerate 30 -draw_mouse 1 -i title=Trace -pix_fmt yuv420p -profile:v baseline -y Huangbaohua.mp4 pause
You can see that the title of the window we targeted is “Trace” (we gave this name to the window in the code above).
Save this text into a batch file (.bat at the end of the name) and run it after you saved it.
How to check your audio device and other devices names
ffmpeg -list_devices true -f dshow -i dummy pause
Save also this as .bat file and run it.
Record just a window for some time
To record a specific window (by its name) and for a specific amount of time, you can use this code and save it as a .bat file
ffmpeg -rtbufsize 1500M -f dshow -i audio="Microfono (8- Logitech USB Headset)" -f gdigrab -framerate 30 -draw_mouse 1 -i title=Trace -pix_fmt yuv420p -profile:v baseline -y -t 00:00:30 win30sec.mp4 pause
The duration is the -t 00:00:30
You can change it to the duration you want.
