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• Use bash script with yt-download and ffmpeg to extract OR covert depending on format

  7 juin 2018, par Keyslinger

  I have a batch of files I uploaded to YouTube which I now wish to backup on my MacBook. When I download and extract the audio, I get either *.m4a or *. opus :

  #!/bin/sh
  
  ID="$1"
  
  
  
  youtube-dl -f bestaudio -x -i --audio-format best -o '%(playlist)s/%(playlist_index)s %(uploader)s - %(title)s.%(ext)s' https://www.youtube.com/playlist?list="$ID"

  When the file extension is m4a, I need to leave it that way and perform no conversion, when the extension is opus, I need to convert it to m4a.

  If I want to convert every file, I can do something like this :

  youtube-dl -f bestaudio -x -i --audio-format m4a -o '%(playlist)s/%(playlist_index)s %(uploader)s - %(title)s.%(ext)s' https://www.youtube.com/playlist?list="$ID"

  But then the conversion is performed no matter what.

  How can I extract and only convert when the file extension is not m4a ?

• Download Video from m3u8 with ffmpeg and multibitrate

  24 avril 2013, par AbrahamSustaita

  I need to download the videos from a streaming site (Akamai) once they are recorded. I can do it with ffmpeg without troubles, but only if the manifest file has only one video stream. If it has multibitrate then I got into problems. Is there anyway I can tell ffmpeg to download one or other video ?

  This is the line I'm using :

  ffmpeg -i http://akamai.link.com/master.m3u8 -acodec copy -vcodec copy  -y -loglevel info -f mp4 destiny.mp4

  EDIT : Adding response :

  This is the file I'm using :

  #EXTM3U
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=714000,RESOLUTION=640x480,CODECS="avc1.77.30, mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_av-p.m3u8?sd=10&rebase=on
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=714000,RESOLUTION=640x480,CODECS="avc1.77.30, mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_av-b.m3u8?sd=10&rebase=on
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=64000,CODECS="mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_a-p.m3u8?sd=10&rebase=on
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=64000,CODECS="mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_a-b.m3u8?sd=10&rebase=on

  ffmpeg response correctly, but the file is not complete.

  ADDING OUTPUT WITH -map PARAMTER

  dev:/var/www/localhost/htdocs# ffmpeg -map -i simple.m3u8 -acodec copy -vcodec copy  -y -loglevel info -f mp4 simple.mp4
  
  ffmpeg version 1.0 Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Oct 25 2012 08:01:45 with gcc 4.7.2 (Alpine 4.7.2-r0)
  
    configuration: --prefix=/usr --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libfaac --enable-libvpx --enable-libxvid --enable-libx264 --enable-libtheora --enable-nonfree --enable-postproc --enable-pic --enable-pthreads --enable-shared --enable-x11grab --disable-asm --disable-stripping --disable-static --disable-debug
  
    libavutil      51. 73.101 / 51. 73.101
  
    libavcodec     54. 59.100 / 54. 59.100
  
    libavformat    54. 29.104 / 54. 29.104
  
    libavdevice    54.  2.101 / 54.  2.101
  
    libavfilter     3. 17.100 /  3. 17.100
  
    libswscale      2.  1.101 /  2.  1.101
  
    libswresample   0. 15.100 /  0. 15.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  Invalid input file index: 0.

• Download youtube video duration using youtube-dl PHP and ffmpeg

  20 juillet 2016, par user3285828

  Is there any more efficient way to download youtube videos at a specific start and end time using youtube-dl and ffmpeg in PHP.

  I currently have this, which does work, it first downloads the whole video to an mp3 file, and then crops that file to the range I set using ffmpeg, but when I only want 30 seconds or so of a 20 minute video, waiting for the full video to download doesn’t seem the best way to do it.

  <?php
  
  require __DIR__ . '/vendor/autoload.php';
  
  
  
  use YoutubeDl\YoutubeDl;
  
  
  
  $dl = new YoutubeDl([
  
      'extract-audio' => true,
  
      'audio-format' => 'mp3',
  
      'audio-quality' => 0, // best
  
      'output' => 'videoname.%(ext)s',
  
  ]);
  
  $dl->setDownloadPath('C:\youtubevideos');
  
  $video = $dl->download('https://www.youtube.com/watch?v=oDAw7vW7H0c');
  
  
  
  $start = 60; // Start 60 seconds in to the video
  
  $duration = 30; // Get 30 seconds after $start
  
  $fullVideo = "C:\youtubevideos\videoname.mp3";
  
  $shortVideo = "C:\youtubevideos\short\shortversion.mp3"; // create 30 seconds
  
  exec("ffmpeg -ss $start -i $fullVideo -t $duration -c copy $shortVideo");
  
  exec("DEL $fullVideo");

  I am using youtube dl PHP https://github.com/norkunas/youtube-dl-php