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• Tkinter window and script freeze when filedialog is used

  11 décembre 2020, par RandomInternetPerson

  Im developing a audio player for python. Unfortunately, it appears as if after a modification, the file dialog portion of the script ceased working. The code below is a minimum reproducible example of the offending bit.

  


  # -----------------------Setup-----------------------
# Imports
from tkinter import * 
from tkinter.ttk import * 
from tkinter import filedialog

import simpleaudio
import subprocess

# GUI
root = Tk() 
root.title("CupPlayer") 
menubar = Menu(root)
file = Menu(menubar, tearoff = 0)
root.config(menu = menubar)
# ----------------------Functions---------------------
def file_selector(): 
    filename = filedialog.askopenfilename()
    
    root.update()
    if filename.endswith('.mp3'):
            subprocess.call(['ffmpeg', '-i', filename,
                                'audio.wav'])
btn = Button(root, text = 'search file !', bd = '5', 
                          command = file_selector) 

mainloop() 


  


• RTSP to RTMP using FFMPEG on Raspberry Pi to YouTube Livestream ends prematurely (and sometimes doesn't start)

  12 mars 2021, par user203875

  I have been running a program from my raspberry pi 4 that converts a RTSP network camera feed to RTMP for YouTube. The stream used to run non-stop every day. I didn't have to do anything. I have a program in place that would restart if the feed died.

  


  Nothing has changed with that program in 2 years. About a month ago, the feed stopped working. I just started into trying to figure out why. Maybe someone has some ideas on what is going on ?

  


  In order for me to start the feed, I must also start a studio.youtube.com browser session showing the feed information. If that web page is up and running, the live stream will start. While I can't say for certain that it NEVER starts without this session running, it seems that way.

  


  Usually the stream lasts for an hour or two. Rarely more than four hours.

  


  When I start up a studio.youtube.com session after the stream dies the "Dimiss" or "Edit in Studio" message is on the page. I have to hit "dismiss" before I can start up the stream again.

  


  Is there a solution to this ?

  


  Again, my program didn't change, so I'm at a loss for what I can do to fix this.

  


• FFMPEG not working as intended in a bash script

  9 mai 2024, par rcp

  I'm trying to get the mean volume of a recording and the echo the expected value. When I do it line by line, everything works fine, but as soon as I execute it in a bash script, I have a problem with the FFMPEG line. I identified the problem, which is that &> analysis is not doing anything for some reason and instead of saving the output in a file it prints it in the shell.

  


  I don't know how to fix it since it works fine when not in a script.

  


  #!/bin/bash

# Record sound
sh aud2.sh

# Run ff.sh in the background to analyze volume and save results
ffmpeg -i test.wav -af "volumedetect" -vn -sn -dn -f null - &> analysis.vol

# Extract mean_volume and save to mean.vol
grep "mean_volume" analysis.vol > mean.vol

# Extract numerical value and save to val.vol
sed -n 's/^.*mean_volume: \([-0-9.]*\) dB.*/\1/p' < mean.vol > val.vol

# Read the value from val.vol into the variable volume
volume=$(code>

  


  Expected output when line by line

  


  Actual output in bash script

  


  I expected the shell output to be saved in a file.