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• 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 !

• Piping file to user after ffmpeg has finished

  9 août 2019, par Azrupt Clan

  Im making a youtube downloader and dont know how i can pipe the files to the user after FFMPEG has downloaded them and compressed the files

  app.get('/download', (req,res) => {
  
  var URL = req.query.URL;
  
  var stream = ytdl(URL);
  
  stream.on('info', (info) => {
  
  const readline = require('readline');
  
  const path   = require('path');
  
  const fs     = require('fs');
  
  const ffmpeg = require('fluent-ffmpeg');
  
  const audioOutput = path.resolve(__dirname,    info.title + 'sound.mp4')
  
  const mainOutput = path.resolve(__dirname,   info.title + '.mp4')
  
  console.log('downloading audio track');
  
  ytdl(URL, {
  
    filter: format => format.container === 'm4a' && !format.encoding
  
  }).on('error', console.error)
  
    .on('progress', (chunkLength, downloaded, total) => {
  
      const percent = downloaded / total;
  
      readline.cursorTo(process.stdout, 0);
  
      process.stdout.write(`${(percent * 100).toFixed(2)}% downloaded `);
  
      process.stdout.write(`(${(downloaded / 1024 / 1024).toFixed(2)}MB of ${(total / 1024 / 1024).toFixed(2)}MB)`);
  
    })
  
  
  
  
  
    .pipe(fs.createWriteStream(audioOutput))
  
    .on('finish', () => {
  
      console.log('\ndownloading video');
  
      ffmpeg()
  
        .input(ytdl(URL, { filter: format => {
  
          return format.container === 'mp4' && !format.audioEncoding; } }))
  
        .videoCodec('copy')
  
        .input(audioOutput)
  
        .audioCodec('copy')
  
        .save(mainOutput)
  
        .on('error', console.error)
  
        .on('progress', progress => {
  
          readline.cursorTo(process.stdout, 0);
  
          readline.clearLine(process.stdout, 1);
  
          process.stdout.write(progress.timemark);
  
        }).on('end', () => {
  
          fs.unlink(audioOutput, err => {
  
            if(err) console.error(err);
  
            else console.log('\nfinished downloading');
  
            res.header('Content-Disposition', 'attachment; filename=' + info.title + '.mp4');
  
          });
  
        });
  
    });
  
    })});

  Expected result File should be sent to the users downloads

• Calling one CLU(command line utility) with argument from another CLU in cmd ( youtube-dl from ffmpeg with additional arguments)

  3 septembre 2019, par beastboy

  I am able to run youtube-dl using command prompt , I have already kept youtube-dl.exe in the ffmpeg main folder and the ffmpeg bin folder and also I have kept ffmpeg.exe in the youtube_dl folder,

  now I am trying to call ffmpeg.exe in command prompt from youtube-dl with some additional arguments in ffmpeg and vice versa with the below commands
  and getting the following erros.

  Command

  C:\ffmpeg>youtube-dl -f 160 https://www.youtube.com/watch?v=u3APNJYMrLo --hls-prefer-ffmpeg --external-downloader ffmpeg --external-downloader-args -ss 00:00:20 -to 00:00:30

  Command

  C:\youtube_dl>youtube-dl -f 160 https://www.youtube.com/watch?v=u3APNJYMrLo --hls-prefer-ffmpeg --external-downloader ffmpeg --external-downloader-args -ss 00:00:20 -to 00:00:30

  Error

  Usage: youtube-dl [OPTIONS] URL [URL...]
  
  
  
  youtube-dl: error: using output template conflicts with using title, video ID or auto number

  and

  Command

  ffmpeg -ss 00:00:20 -to 00:00:30 -i "$(youtube-dl -f 160 -g https://www.youtube.com/watch?v=u3APNJYMrLo)" -c copy youtube.mp4

  Error

  $(youtube-dl: No such file or directory

  Command

  ffmpeg -ss 00:00:20 -to 00:00:30 -i $(youtube-dl -f 160 -g https://www.youtube.com/watch?v=u3APNJYMrLo) -c copy youtube.mp4

  Error

  $(youtube-dl -f 160 -g https://www.youtube.com/watch?v=u3APNJYMrLo): Invalid argument

  as per my understanding and the documentation pages of youtube-dl and ffmpeg the commands should work and should download the videos in the specified resolution but its not working.
  Can someone guide me on this , what is wrong with the code and how to rectify it if any.