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• Streaming a WebPage to YouTube using FFMpeg

  30 mars 2020, par Pedro Lobito

  I’m trying to stream a webpage to YouTube using phantomjs and ffmpeg.
  Long question short :

  This works. The video is saved to test.flv :

  phantomjs runner.js|ffmpeg -y -f image2pipe -r 10 -s 1280x720 -i - -deinterlace -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 10 -g 20 -vb 400k -maxrate 400k -minrate 400k -bufsize 800k -threads 6 -q:v 0 -t 10 -f flv test.flv

  This doesn’t. Despite no errors, nothing is streamed to YouTube.

  phantomjs runner.js|ffmpeg -f image2pipe -r 10 -s 1280x720 -i - -deinterlace -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 10 -g 2 -vb 400k -maxrate 400k -minrate 400k -bufsize 800k -threads 6 -q:v 0 -f flv rtmp://a.rtmp.youtube.com/live2/xxxxxxx

  ---

  Remarks :

  1. I’m aware phantomjs isn’t actively developed anymore, but this doesn’t seem
     relevant since the phantomjs script works as intended ;
  2. phantomjs script : runner.js ;
  3. I’ve tried different ffmpeg settings, like frame-rates, bit-rates and bufsize to no avail.
  4. Both commands are similar, but the 1st outputs to local-file test.flv while 2nd to YouTube ;
  5. I’ve used the YouTube streaming key on OBS Studio and it works normally ;
  6. ffmpeg output while streaming to YouTube :

  frame=   13 fps=0.0 q=42.0 size=      94kB time=00:00:00.50 bitrate=1531.0kbits/                                                                   frame=   18 fps= 16 q=40.0 size=     130kB time=00:00:01.00 bitrate=1063.6kbits/                                                                   frame=   23 fps= 14 q=44.0 size=     149kB time=00:00:01.50 bitrate= 810.8kbits/

  7. ffmpeg version 4.2.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers running on Ubuntu-1804

  Any idea of what can be wrong ?

• youtube-dl python script postprocessing error : FFMPEG codecs aren't being recognized

  23 septembre 2016, par stackPusher

  My python script is trying to download youtube videos with youtube-dl.py. Works fine unless postprocessing is required. The code :

  import youtube_dl
  
  
  
  options = {
  
      'format':'bestaudio/best',
  
      'extractaudio':True,
  
      'audioformat':'mp3',
  
      'outtmpl':'%(id)s',     #name the file the ID of the video
  
      'noplaylist':True,
  
      'nocheckcertificate':True,
  
      'postprocessors': [{
  
          'key': 'FFmpegExtractAudio',
  
          'preferredcodec': 'mp3',
  
          'preferredquality': '192',
  
      }]
  
  }
  
  
  
  with youtube_dl.YoutubeDL(options) as ydl:
  
      ydl.download(['http://www.youtube.com/watch?v=BaW_jenozKc'])

  Below is the output I receive :

  I get a similar error if I try setting ’preferredcodec’ to ’opus’ or ’best’.
  I’m not sure if this is relevant, but I can run the command line counterpart fine :

  youtube-dl -o 'test2.%(ext)s' --extract-audio --audio-format mp3 --no-check-certificate https://www.youtube.com/watch?v=BaW_jenozKc

  I’ve gotten a few clues from the internet and other questions and from what i understand this is most likely an issue with my ffmpeg, which isn’t a python module right ? Here is my ffmpeg version and configuration :
  

  If the answer to my problem is to add some configuration setting to my ffmpeg please explain how i go about doing that.

• How can I generate a hls.m3u8 file using a youtube URL ?

  8 avril 2021, par User0011

  I used ffmpeg in python and I was able to generate a hls file from a local mp4 file that i had on my computer, but now I want to know if there is a way to generate the hls file using a youtube URL and give this url to the input() function of ffmpeg in python ?
Here is the code I used for the first time, I want to replace test.mp4 with a youtube URL, is it possible ?
Thanks for the help

  


  import ffmpeg_streaming
from ffmpeg_streaming import Formats, Bitrate, Representation, Size


video = ffmpeg_streaming.input('/Users/test.mp4')

_480p = Representation(Size(854, 480), Bitrate(750 * 1024, 192 * 1024))
_720p = Representation(Size(1280, 720), Bitrate(2048 * 1024, 320 * 1024))

hls = video.hls(Formats.h264(), hls_list_size=10, hls_time=5)
hls.representations(_480p, _720p)
hls.fragmented_mp4()
hls.output('/Users//hls.m3u8')