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+--- Thread: Lost Control over VLC (/thread-40369.html)
Lost Control over VLC - jrockow - Jul-18-2023
First post; not sure if this is the proper forum?
I'm working on a Python Windows VLC media player script, and ran into a problem I can't figure out.
I've done a lot of reading and testing, but am getting nowhere.
After I start playing my video I need a popup window to select the proper subtitle.
As soon as I select the popup, I lose control of VLC.
I can close the popup and the video keeps playing but I have no control over it.
I have included the 2 functions that are relevant. They have been stripped to the minimum required to produce the problem.
I would truly appreciate any help.
Thanx!
from pynput import keyboard
from pynput.keyboard import Key
import time
import keyboard
global media_player
def vlc_player(filename):
# creating vlc media player object
media_player = vlc.MediaPlayer()
# making keyboard input enable
media_player.video_set_key_input(True)
# media object
media = vlc.Media(filename)
media_player.set_media(media)
# toggling full screen
media_player.toggle_fullscreen()
# set volumes
media_player.audio_set_volume(100)
#time=media_player.get_time()
media_player.play()
# STOP playing when end-of-file reached
Ended = 6#set arbitrary value
current_state = media_player.get_state()
while current_state != Ended:
# define keys pressed during playback
if keyboard.is_pressed("s"):
media_player.stop()
if keyboard.is_pressed("ctrl+x"):
sub_popup()
current_state = media_player.get_state()
media_player.stop()
def sub_popup():
top = Toplevel(my_canvas, width = 250, height = 400)
top.geometry('%dx%d+%d+%d' % (300, 350, 800, 200))
top.configure(bg="black",highlightthickness=7)
top.wm_overrideredirect(True)
top.attributes("-topmost", True)
play = Button(top, text="Okay", command = top.destroy)
play.pack()
top.mainloop()
RE: Lost Control over VLC - deanhystad - Jul-18-2023
mainloop() blocks your program from running until the last window is destroyed. You should not put mainloop() in your sub_popup() function if there is a mainloop() elsewhere in your program (There can only be one).
RE: Lost Control over VLC - jrockow - Jul-18-2023
(Jul-18-2023, 03:20 PM)deanhystad Wrote: mainloop() blocks your program from running until the last window is destroyed. You should not put mainloop() in your sub_popup() function if there is a mainloop() elsewhere in your program (There can only be one).
Thanx for your response.
When I remove the mainloop the popup doesn't display at all.
The mainloop statement is not in my full script, but I still have the same problem.
I will try to upload the script.
RE: Lost Control over VLC - deanhystad - Jul-18-2023
Is that the only time you call mainloop() in your program? Is that the only tkinter window? What is my_canvas?
RE: Lost Control over VLC - jrockow - Jul-18-2023
(Jul-18-2023, 05:07 PM)deanhystad Wrote: Is that the only time you call mainloop() in your program? Is that the only tkinter window? What is my_canvas?
I only call mainloop at the end of the script.
There are several tkinter windows.
I'm trying to send you the full script, but having a problem.
OK, maybe it's there now?
RE: Lost Control over VLC - jrockow - Jul-18-2023
It just dawns on me that you may need my SQL.DB to test the code.
Currently it's around 14MB, but I could probably delete a lot of the records if you need it.
What is the maximum size I can attach?
I just deleted about half of the records and the size is still 14MB.
RE: Lost Control over VLC - deanhystad - Jul-18-2023
Have you written tkinter programs before? They have a pattern that you need to follow, a pattern very different than a script.
RE: Lost Control over VLC - deanhystad - Jul-18-2023
You have a problem with the design of your program. tkinter.mainloop() blocks other code from running. You also have a loop that looks for key presses that blocks other code from running. Somehow you need to get these to work together.
I think I would move this loop:
Ended = 6#set arbitrary value
current_state = media_player.get_state()
while current_state != Ended:
...To a function that I would call periodically using root.after(milliseconds, func_to_call). Another idea is use event binding to direct key presses to some function. You are already doing this with some key presses, but not all. And there is always multi-threading. Using multi-threading you could set up a keyboard listener that runs in one thread and have tkinter run in another thread. Getting the two threads to work together can be tricky.
RE: Lost Control over VLC - jrockow - Jul-18-2023
(Jul-18-2023, 05:53 PM)deanhystad Wrote: I'm pretty sure you can make a test case that does not require a database. If you could just add the code that sets up the keyboard listener and creates the root window (if there is one), that would go a long way toward making something others can run.
Hopefully you got the full script I attached?
I am a complete novice with Python and Tkinter, and have been teaching myself thru reading and trial and error.
My program has come a long way, but I'm stuck now with this one problem.
I just can't resume my VLC session after calling the popup.