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• Hide ffmpeg's console window when running YoutubeDL in GUI application

  23 juin 2016, par Slayther

  I’m developing a basic application which can download YouTube videos. Throughout the development, I had several quirks, including issues with formats.

  I decided to use a hopefully foolproof format syntax that youtube-dl will happily download for me in almost any case.

  Part of my YoutubeDL options look like this :

  self.ydl_opts = {
  
      'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',
  
      'quiet': True,
  
      'progress_hooks': [self.ydl_progress],
  
      'outtmpl': None
  
  }

  The outtmpl is inserted later on when output folder is chosen by the user.

  Since I’m using this format string, youtube-dl uses ffmpeg to merge(?) the audio and video if they are downloaded separately.

  When it does that, it opens very annoying console windows that capture the focus and interrupt other things I might be doing while the videos are downloading.

  My question is, how can I prevent ffmpeg or youtube-dl from creating those console windows from appearing, aka. how can I hide them ?

  EDIT :

  I’ll provide bare bones script that reproduces the problem :

  from __future__ import unicode_literals
  
  from PyQt4 import QtGui, QtCore
  
  import youtube_dl, sys
  
  
  
  def on_progress(info):
  
      print info.get("_percent_str", "Finished")
  
  
  
  ydl_opts = {
  
      'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',
  
      'progress_hooks': [on_progress],
  
      'quiet': True,
  
      'outtmpl': "C:/Users/Raketa/Desktop/%(title)s.%(ext)s"
  
  }
  
  
  
  ydl = youtube_dl.YoutubeDL(ydl_opts)
  
  
  
  class DownloadThread(QtCore.QThread):
  
      def __init__(self):
  
          super(DownloadThread, self).__init__()
  
          self.start()
  
  
  
      def __del__(self):
  
          self.wait()
  
  
  
      def run(self):
  
          print "Download start"
  
          ydl.download(["https://www.youtube.com/watch?v=uy7BiiOI_No"])
  
          print "Download end"
  
  
  
  class Application(QtGui.QMainWindow):
  
      def __init__(self):
  
          super(Application, self).__init__()
  
          self.dl_thread = DownloadThread()
  
  
  
      def run(self):
  
          self.show()
  
  
  
  def main():
  
      master = QtGui.QApplication(sys.argv)
  
  
  
      app = Application()
  
      app.run()
  
  
  
      sys.exit(master.exec_())
  
  
  
  if __name__ == '__main__':
  
      main()

  2(?) consoles appear at start of each download and 1 longer lasting console appears when both video and audio are downloaded. When downloading longer videos, the last console becomes unbearable.

  Is it possible to get rid of those ?

• Hide ffmpeg's console window when running YoutubeDL in GUI application

  27 février 2021, par Božo Stojković

  I'm developing a basic application which can download YouTube videos. Throughout the development, I had several quirks, including issues with formats.

  



  I decided to use a hopefully foolproof format syntax that youtube-dl will happily download for me in almost any case.

  



  Part of my YoutubeDL options look like this :

  



  self.ydl_opts = {
    'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',
    'quiet': True,
    'progress_hooks': [self.ydl_progress],
    'outtmpl': None
}


  



  The outtmpl is inserted later on when output folder is chosen by the user.

  



  Since I'm using this format string, youtube-dl uses ffmpeg to merge(?) the audio and video if they are downloaded separately.

  



  When it does that, it opens very annoying console windows that capture the focus and interrupt other things I might be doing while the videos are downloading.

  



  My question is, how can I prevent ffmpeg or youtube-dl from creating those console windows from appearing, aka. how can I hide them ?

  



  EDIT :

  



  I'll provide bare bones script that reproduces the problem :

  



  from __future__ import unicode_literals
from PyQt4 import QtGui, QtCore
import youtube_dl, sys

def on_progress(info):
    print info.get("_percent_str", "Finished")

ydl_opts = {
    'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',
    'progress_hooks': [on_progress],
    'quiet': True,
    'outtmpl': "C:/Users/Raketa/Desktop/%(title)s.%(ext)s"
}

ydl = youtube_dl.YoutubeDL(ydl_opts)

class DownloadThread(QtCore.QThread):
    def __init__(self):
        super(DownloadThread, self).__init__()
        self.start()

    def __del__(self):
        self.wait()

    def run(self):
        print "Download start"
        ydl.download(["https://www.youtube.com/watch?v=uy7BiiOI_No"])
        print "Download end"

class Application(QtGui.QMainWindow):
    def __init__(self):
        super(Application, self).__init__()
        self.dl_thread = DownloadThread()

    def run(self):
        self.show()

def main():
    master = QtGui.QApplication(sys.argv)

    app = Application()
    app.run()

    sys.exit(master.exec_())

if __name__ == '__main__':
    main()


  



  2(?) consoles appear at start of each download and 1 longer lasting console appears when both video and audio are downloaded. When downloading longer videos, the last console becomes unbearable.

  



  Is it possible to get rid of those ?

  


• Python Print Continuous output of Popen when reset character is used

  23 août 2022, par cclloyd

  I have a snippet of code that runs a video conversion using ffmpeg.

  


  I read the output to analyze it later in the application, and also want to print it to console, for user feedback.

  


  So I have

  


  p = Popen(cmd, stderr=STDOUT, stdout=PIPE)
while True:
    line = p.stdout.readline()
    if not line: 
        break
    print(line.decode('utf-8'), end='')

p.wait()
if p.returncode == 0:
    pass



  


  Which works, somewhat. It prints the initial output of the ffmpeg command, as those are simple print statements.

  


  But once the conversion starts, all the output is updated on one line, presumably using some reset character to move the cursor position back to the start of the line.

  


  Is there a way to continue to print that output ?