youtube-dl is slow in downloading playlist

[thesalah1212]

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• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
[debug] youtube-dl version 2018.01.14
[debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
[debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
[debug] Proxy map: {}
...
<end of log>

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If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

• Single video: https://www.youtube.com/watch?v=BaW_jenozKc
• Single video: https://youtu.be/BaW_jenozKc
• Playlist: https://www.youtube.com/playlist?list=PL4lCao7KL_QFVb7Iudeipvc2BCavECqzc

Note that youtube-dl does not support sites dedicated to copyright infringement. In order for site support request to be accepted all provided example URLs should not violate any copyrights.

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Description of your issue, suggested solution and other information

I try to downoad from playlist on you tube with this command
youtube-dl --write-auto-sub --playlist-start 61 --force-ipv4 -o "/home/thesalah1212/videos/logic/%(playlist_index)s. %(title)s.%(ext)s" https://www.youtube.com/playlist?list=PLBlnK6fEyqRjMH3mWf6kwqiTbT798eAOm
the problem is the speed start decreasing from the 250 kiBs to 50 kiBs for every video

[barisyesilcimen]

i tried diffrent commands. the image : youtube-dl -v -4 -f 140 https://www.youtube.com/watch?v=Bsi5uvBtd3Q --output naber.mp3

[KarthikChandy]

Same problem, the whole thing is so slow.
I gather that the problem is with YouTube slowing it on their end. Hope something can be done.
My output is here:

Desktop:~ $: youtube-dl -v -4 -f 140 https://www.youtube.com/watch?v=U3zVzP2fa-8 --output brown_noise.mp3
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '-4', '-f', '140', 'https://www.youtube.com/watch?v=U3zVzP2fa-8', '--output', 'brown_noise.mp3']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.01.14
[debug] Python version 3.6.3 (CPython) - Darwin-16.7.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 3.4.1, ffprobe 3.4.1
[debug] Proxy map: {}
[youtube] U3zVzP2fa-8: Downloading webpage
[youtube] U3zVzP2fa-8: Downloading video info webpage
[youtube] U3zVzP2fa-8: Extracting video information
[debug] Invoking downloader on 'https://r2---sn-ntq7yned.googlevideo.com/videoplayback?signature=1ADC1C56CE887CC54A4EBF22F04E1DEC6B578C57.DFD20E9314FB5134D1A4582C7DFF755094A92D71&mm=31&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&ipbits=0&keepalive=yes&mime=audio%2Fmp4&itag=140&pl=22&mt=1516246242&mv=m&ei=QBVgWo6EIZ3CgAPj05iYDA&ms=au&requiressl=yes&gir=yes&clen=57177342&mn=sn-ntq7yned&source=youtube&initcwndbps=3560000&id=o-AEoLLtDqtRB25rpgsKLuN4GsQs1rXKE4o2fGb_cqwNvM&ip=54.240.193.129&key=yt6&lmt=1443761384428387&dur=3600.068&expire=1516267937&ratebypass=yes'
[download] Destination: brown_noise.mp3
[download]  11.0% of 54.53MiB at 55.70KiB/s ETA 14:52

[lainredsonic]

I have the same issue, It's very slow to download any ytb video.

[dstftw]

Youtube shapes download speed, use external downloader.

[barisyesilcimen]

i used axel and aria2c. Same issue. i tested with 20-30 diffrent commands and 3 vps.

[thesalah1212]

the problem is still on , further I use external downloader

[farazpartoei]

try to use -f 'best' which gives you .webm file and you can convert it to whatever using ffmpeg