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• ffmpeg - transcode stream to play on flowplayer [on hold]

  7 janvier 2016, par arlind

  i have a streaming link and im restreaming it via ffmpeg

  -vcodec copy -c:a libmp3lame -ab 48k -ar 22050

  so if i play in flowplayer (web PLayer) i just listen audio perfect and video has problems
  "so i just see images instand of video" its slow and it block

  When i play that video on vlc is working perfect and in video codec i see

    H264 - MPEG-4 AVC (avc1)     MPEG Audyo layer 3 (mp3)

  so how to convert this stream so i can watch on web players like flowplayer or jw player

• Python yt-dlp and ffmpeg error "merging of multiple formats but ffmpeg is not installed"

  16 octobre 2024, par T Tea Tie

  I am using the latest version of yt-dlp with Python 3.9.

  


  I am trying to download a youtube video in mp4 format with outputname as the youtubeid.mp4 and with best resolution not more than 4K.

  


  This is my Python code :

  


  ytid = '4cDqaLxrt6Q'
url = 'https://www.youtube.com/watch?v='+ytid
output_filename = ytid+".mp4"
    
with YoutubeDL({'format': 'bestvideo[height<=?4K]+bestaudio/best', 'output': output_filename}) as ydl:
    ydl.download(url)`#TODO debug FFmpeg and check if outputname is ok


  


  I expected to have an .mp4 file in my current working directory.

  


  Then I installed the latest version of FFmpeg from ffmpeg-master-latest-win64-gpl.zip and put ffmpeg.exe, ffplay.exe and ffprobe.exe in Scripts python folder (where yt-dlp.exe is). I also installed ffmpeg using pip install.

  


  The Traceback is :

  


  


  [youtube] Extracting URL : https://www.youtube.com/watch?v=4cDqaLxrt6Q
[youtube] 4cDqaLxrt6Q : Downloading webpage
[youtube] 4cDqaLxrt6Q : Downloading android player API JSON
[youtube] 4cDqaLxrt6Q : Downloading MPD manifest
[youtube] 4cDqaLxrt6Q : Downloading MPD manifest
[info] 4cDqaLxrt6Q : Downloading 1 format(s) : 243+251
ERROR : You have requested merging of multiple formats but ffmpeg is not installed. Aborting due to —abort-on-error
Traceback (most recent call last) :

  


  File "C :\Users\t\OneDrive\Documents\Python Scripts\project\main.py", line 88, in 
ydl.download(url)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 3353, in download
self.__download_wrapper(self.extract_info)(

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 3328, in wrapper
res = func(*args, **kwargs)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1486, in extract_info
return self.__extract_info(url, self.get_info_extractor(key), download, extra_info, process)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1497, in wrapper
return func(self, *args, **kwargs)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1594, in __extract_info
return self.process_ie_result(ie_result, download, extra_info)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1653, in process_ie_result
ie_result = self.process_video_result(ie_result, download=download)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 2767, in process_video_result
self.process_info(new_info)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 3189, in process_info
self.report_error(f'msg. Aborting due to —abort-on-error')

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 1007, in report_error
self.trouble(f'self._format_err("ERROR :", self.Styles.ERROR) message', *args, **kwargs)

  


  File "C :\Users\t\anaconda3\lib\site-packages\yt_dlp\YoutubeDL.py", line 947, in trouble
raise DownloadError(message, exc_info)

  


  DownloadError : ERROR : You have requested merging of multiple formats but ffmpeg is not installed. Aborting due to —abort-on-error

  


  


• Learning Shell - creating a script with parameters that runs two separate cli apps

  16 mai 2013, par GuilhermeNagatomo

  I want to learn shell script, so I'm trying to download a youtube video using youtube-dl then convert it to mp3 using ffmpeg.

  I do it manually running youtube-dl http://youtube.com/watch?v=...
  then
  ffmpeg -i downloadedFile -ab 256000 -ar 44100 audioFile.mp3.

  I know that I need to pass two arguments to my script, one for the video url and another for the audio file to keep things as simple as possible, but I don't know how to start. Maybe grep the video id in the url and using it to know which file to use to convert into mp3 ? (since youtube-dl saves the video named by it's id)

  Can someone recommend me an article or documentation that can help me ?