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• How can I play an audio file while converting it with ffmpeg in Node.js ?

  18 août 2017, par Blake Allen

  I created a simple video-to-audio converter with ffmpeg for my discord.js bot :

  let stream = //an mp4 stream
  
  ffmpeg(stream)
  
    .toFormat("mp3")
  
    .stream(fs.createWriteStream("./audio.mp3"))
  
    .on("end", () => {
  
      connection.playStream(fs.createReadStream("./audio.mp3"))
  
    });

  This all works fine, but using .on() to play the file - only after it completely finishes converting - can take a while.

  Is there an efficient way to use connection.playStream to play the audio file or stream as the ffmpeg conversion is still happening ?

• android - how to play two audio file at same time

  29 janvier 2016, par Sajad Norouzi

  I wanna create an karaoke android app. so far, user can listen to the song and record his voice. now I want to let user some editing like setting volume of his voice or setting Reverb effect. I have some library like ffmpeg and sox on android and don’t have problem for mixing two audio, but for setting volume or Reverb wanna play two audio file simultaneously using mediaplayer, however it’s not possible because android doesn’t let us play two audio file with mediaplayer at same time even with two different object of mediaplayer. so, what is the solution ?

• How to play, pause and stop a video in the buttons of GUI created in Python ?

  24 juillet 2016, par Purvaj

  I have created a GUI in Python. In the GUI I have three buttons, Play, Pause and Stop. On the click of the respective buttons, i want the respective tasks to be done, that is, play, pause and stop a video. Any body have any idea please help me. This is what i have tried to do so far :

  from tkinter import *
  
  import subprocess
  
  import os
  
  import vlc
  
  
  
  root=Tk()
  
  root.title("ARP")
  
  root.geometry("200x100")
  
  
  
  
  
  def play():
  
  left_video = subprocess.Popen(["C:/Program Files (x86)/VideoLAN/VLC/vlc.exe","\\C:\FFmpegTool\\bin\\samplevideo.mp4"])
  
  
  
  right_video = subprocess.Popen(["C:/Program Files (x86)/VideoLAN/VLC/vlc.exe","\\C:\FFmpegTool\\bin\\rotate1.mp4"])
  
  
  
  
  
  app=Frame(root)
  
  app.grid()
  
  button1=Button(app, text="Play", command=play)
  
  button1.grid()
  
  
  
  button2=Button(app)
  
  button2.grid()
  
  button2.configure(text="Pause")
  
  
  
  button3=Button(app)
  
  button3.grid()
  
  button3.configure(text="Stop")
  
  
  
  root.mainloop()

  Please help me.