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• How do I convert a webm file to a wav file [closed]

  5 janvier 2021, par Justin

  I'm using the pafy library to download a video from Youtube as a webm file. Now I'm trying to convert that webm file to a .wav file. I am aware of something simlar to this question being posted on here Coverting webm to wav with ffmpeg
However it's not giving me the answer I need. The error I keep getting is this.

  


  File "C:/Users/16156/PycharmProjects/youtubeaudiodownloader/audiodownload.py", line 29, in <module>&#xA;ad.fromMpToWav()&#xA;&#xA;&#xA;File "C:/Users/16156/PycharmProjects/youtubeaudiodownloader/audiodownload.py", line 20, in fromMpToWav&#xA;    command = &#x27;ffmpeg -i&#x27; &#x2B; self.vid.getbestaudio(), &#x2B; &#x27;&#x27; &#x2B; r&#x27;C:\Users\16156\PycharmProjects\youtubeaudiodownloader\test.wav&#x27;&#xA;TypeError: can only concatenate str (not "YtdlStream") to str&#xA;</module>

  


  Here's the code that is causing the error

  


      def fromMpToWav(self):
    time.sleep(5)
    command  = ['ffmpeg -i', self.vid.getbestaudio(),r'C:\Users\16156\PycharmProjects\youtubeaudiodownloader\test.wav']
    subprocess.run(command)


  


  I originally was placing the command variable into an array, however, I changed it.

  


  I've been stuck on this for a good hour now and have no idea how to fix it. Anyone has ever tried doing something likewise to this that can help me out.

  


• Including Youtube-dl in FFMPEG not working in Bash (OSX)

  14 juillet 2019, par user1029296

  I am trying to download 5 second samples for a list of youtube video. The traditional approach is to download the entire file with "youtube-dl" and then use "ffmpeg" to split it however you want it.

  I am trying to use the following method : https://github.com/ytdl-org/youtube-dl/issues/622#issuecomment-162337869

  It does work when I include the variables in the command, for example :

  ffmpeg -ss 0 -i $(youtube-dl -f best --get-url https://www.youtube.com/watch?v=ySVi-0RS5vI&t=5s) -t 10 -c:v copy -c:a copy title2.mp4

  However, I am having issues trying to automate the system. Specifically, I would like ffmpeg and youtube-dl to read a file and use the values. I created the file "youtube.txt" which includes the following codes :

  440.8,https://www.youtube.com/watch?v=0-4wOE_DNeA,661.2,881.6,0-4wOE_DNeA
  
  330,https://www.youtube.com/watch?v=0-AMWW6tHzw,495,660,0-AMWW6tHzw
  
  509.2,https://www.youtube.com/watch?v=0-Rmto2rgMw,763.8,1018.4,0-Rmto2rgMw
  
  427.6,https://www.youtube.com/watch?v=0-U53qm45cA,641.4,855.2,0-U53qm45cA
  
  320.4,https://www.youtube.com/watch?v=0-dja9Ys4Sg,480.6,640.8,0-dja9Ys4Sg
  
  343.6,https://www.youtube.com/watch?v=0-g_PulsqtM,515.4,687.2,0-g_PulsqtM
  
  415.6,https://www.youtube.com/watch?v=0-nniRyn7dU,623.4,831.2,0-nniRyn7dU
  
  431.2,https://www.youtube.com/watch?v=006BQU3BFxw,646.8,862.4,006BQU3BFxw

  I am using the following command :

  parallel -j 6 --colsep ',' ffmpeg -ss {1} -i $(youtube-dl -f best --get-url {2}) --t 5 -c:v copy -c:a copy {5} :::: youtube.txt

  However, I get the following errors :

  ERROR: '{2}' is not a valid URL. Set --default-search "ytsearch" (or run  youtube-dl "ytsearch:{2}" ) to search YouTube
  
  --t: No such file or directory

  Would you mind helping me ?

  Thanks !

• disable muxing in YOUTUBE-DL

  3 février 2020, par user3515562

  I want to disbale post process in youtube-dl(2020.01.24).
  My batch file contains

  set /p ytlink=Enter the link of Youtube Video:-    
  
  youtube-dl -x -o D:\%%(title)s.%%(ext)s %ytlink%  
  
  pause  

  The youtube-dl first downloads webm file or any other file than use post process ffmpeg.exe to convert it.
  I want to disable post process.Their must be no post process happening after youtube-dl download.
  
   x is the option to only download audio file of the YouTube video in webm format .There is no post processing involved.But youtube-dl by default tries to convert the webm file to some other format, which is post processing.Post processing of audio file by default is one that i want to disable
  OS=Windows 10