External Downloader option is ignored when downloading from ok.ru

[lem0n4de]

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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] Custom config: []
[debug] Command-line args: ['https://ok.ru/video/952583587217', '--external-downloader', 'aria2c', '-v']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.06.14
[debug] Python version 3.6.5 (CPython) - Linux-4.17.2-1-ARCH-x86_64-with-arch
[debug] exe versions: ffmpeg 4.0.1, ffprobe 4.0.1
[debug] Proxy map: {}
[Odnoklassniki] 952583587217: Downloading webpage
[Odnoklassniki] 952583587217: Downloading m3u8 information
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on 'https://vd42.mycdn.me/expires/1529520520275/srcIp/212.174.135.240/srcAg/GECKO/type/1/sig/0b06369d063e0b8d3cdb8b31976a2c7412381dc5/ct/8/urls/217.20.157.201%3B217.20.153.80%3B217.20.152.73/clientType/0/id/307735759586/video/'
[hlsnative] Downloading m3u8 manifest
[hlsnative] Total fragments: 13
[download] Destination: Девочка довела до слез!!!!!!!!-952583587217.mp4
[download] 100% of 8.88MiB in 01:13
[debug] ffmpeg command line: ffprobe -show_streams 'file:Девочка довела до слез!!!!!!!!-952583587217.mp4'
[ffmpeg] Fixing malformed AAC bitstream in "Девочка довела до слез!!!!!!!!-952583587217.mp4"
[debug] ffmpeg command line: ffmpeg -y -i 'file:Девочка довела до слез!!!!!!!!-952583587217.mp4' -c copy -f mp4 -bsf:a aac_adtstoasc 'file:Девочка довела до слез!!!!!!!!-952583587217.temp.mp4'

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Description of your issue, suggested solution and other information

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When I try to download a video from ok.ru with any external downloader option, they are ignored and download goes directly to youtube-dl's downloader which is slow.
This is an example video link : https://ok.ru/video/952583587217

[dstftw]

aria2c does not support HLS.