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• ffmpeg streams with low framerate to Youtube

  20 février 2019, par FJ-web

  I try to stream audio and a set of jpegs via ffmpeg to youtube. Youtube has requirements on the framerate and the bitstream size.

  My ffmpeg command is :

  ffmpeg -ar 44100 -f alsa -thread_queue_size 512 -ac 1 -i hw:1,0 -f concat -r 20 -i list.txt -vf "scale=iw*min(1920/iw\,1080/ih):ih*min(1920/iw\,1080/ih), pad=1920:1080:(1920-iw*min(1920/iw\,1080/ih))/2:(1080-ih*min(1920/iw\,1080/ih))/2,fps=30,format=yuv420p" -crf 20 -f flv "rtmp://a.rtmp.youtube.com/{}/{}"

  Here hw:1,0 is my audio interface and list.txt is a list of jpeg images with 1920x1080 pixels.

  So, basically I tell ffmpeg explicitly to read 20 frames per second and stream in 30 frames per second, nevertheless youtube receives only between 0 and 3 frames per second. When performing this task my CPU usage is about 43%.

  What did I do wrong ?

• I'm having an issue with my discord bot playing audio from a youtube url

  19 avril 2022, par Alex Graeca

  sync def hog():
channel = bot.get_channel(964971002289356893)
url = 'https://www.youtube.com/watch?v=GyRmkAfpCOM'
await asyncio.sleep(1)
voice_channel = bot.get_channel(int(964971002289356893))
vc = await voice_channel.connect()
#vc.play(discord.FFmpegPCMAudio('C:/Users/alexa/Downloads/hogrider.mp3'))
vc.play(discord.FFmpegPCMAudio(source='https://www.youtube.com/watch?v=GyRmkAfpCOM', executable='ffmpeg.exe'))
while vc.is_playing():
    await asyncio.sleep(5)
await vc.disconnect()


  


  It works fine with the audio file from my laptop, but I want to play it from a youtube link.
It gives me an error :
https://www.youtube.com/watch?v=GyRmkAfpCOM : Invalid data found when processing input

  


  Thank you in advance

  


• Is there a way to stream download a mp3 file that is being converted on a nodejs server ?

  19 février 2019, par Thriskel

  I am looking for a way to send the url to the nodejs server and respond the user with the mp3 file download.

  I searched some examples, and read about requests and responses, but I am not sure what the problem really is.

  This is the Javascript for the HTML :

      var downloadBtn = document.querySelector('.download_button');
  
      var URLinput = document.querySelector('#myUrl');
  
  
  
      downloadBtn.addEventListener('click', () => {
  
          console.log(`URL: ${URLinput.value}`);
  
          sendURL(URLinput.value);
  
      });
  
  
  
      function sendURL(URL) {
  
          window.location.href = `http://localhost:4000/download?URL=${URL}`;
  
      }

  This is the Javascript for the Nodejs server :

  const express = require('express');
  
  const cors = require('cors');
  
  const ytdl = require('ytdl-core');
  
  const app = express();
  
  const ffmpeg = require('fluent-ffmpeg')
  
  app.use(cors());
  
  
  
  app.listen(4000, () => {
  
      console.log('Server Works !!! At port 4000');
  
  });
  
  
  
  app.get('/download', (req,res) => {
  
  var URL = req.query.URL;
  
  
  
  res.header('Content-Disposition', 'attachment; filename="file.mp3"');
  
  let stream = ytdl(URL, { 
  
    quality: 'highestaudio',
  
  }); //HERE THE STREAM FILE IS SELECTED TO BE CONVERTED TO MP3
  
  
  
  ffmpeg(stream)
  
    .audioBitrate(128)
  
    .pipe(res); // HERE IS CONVERTED AND WHERE I WANT IT TO SEND IT AS A DOWNLOAD TO THE USER.
  
  });

  I expected it to stream download the file but instead it gets me to the nodejs server page to /download/url_to_vid