WARNING: unable to extract series [Crunchyroll]

[awgiedawgie]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.07.15. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.07.15

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

C>youtube-dl -v -f hls-653-2 --sub-format ass --sub-lang enUS --write-sub http://www.crunchyroll.com/saekano-how-to-raise-a-boring-girlfriend-/episode-0-fan-service-of-love-and-youth-668047
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '-f', 'hls-653-2', '--sub-format', 'ass', '--sub-lang', 'enUS', '--write-sub', 'http://www.crunchyroll.com/saekano-how-to-raise-a-boring-girlfriend-/episode-0-fan-service-of-love-and-youth-668047']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2017.07.15
[debug] Python version 3.4.4 - Windows-10-10.0.15063
[debug] exe versions: ffmpeg 3.2.4, ffprobe 3.2.4, rtmpdump 2.4
[debug] Proxy map: {}
[Crunchyroll] 668047: Downloading webpage
[Crunchyroll] 668047: Downloading media info for 360p
[Crunchyroll] 668047: Downloading m3u8 information
[Crunchyroll] 668047: Downloading media info for 480p
[Crunchyroll] 668047: Downloading m3u8 information
[Crunchyroll] 668047: Downloading media info
[Crunchyroll] 668047: Downloading subtitles for English (US)
[Crunchyroll] 668047: Downloading subtitles for Español
[Crunchyroll] 668047: Downloading subtitles for Español (España)
[Crunchyroll] 668047: Downloading subtitles for Français (France)
[Crunchyroll] 668047: Downloading subtitles for Português (Brasil)
[Crunchyroll] 668047: Downloading subtitles for Italiano
[Crunchyroll] 668047: Downloading subtitles for Deutsch
WARNING: unable to extract series; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[info] Writing video subtitles to: Saekano -How to Raise a Boring Girlfriend- – Fan Service of Love and Youth-668047.enUS.ass
[debug] Invoking downloader on 'https://v.vrv.co/evs/assets/05npdgez8frsxu9_1025245.mp4/index-v1-a1.m3u8?Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly92LnZydi5jby9ldnMvYXNzZXRzLyoiLCJDb25kaXRpb24iOnsiRGF0ZUxlc3NUaGFuIjp7IkFXUzpFcG9jaFRpbWUiOjE1MDAzNTM4OTl9fX1dfQ__&Signature=HdBTyp068MX7FWPriSnruomjb2D865GERaweYthX2XRphSfyDnf6wHmpfV47A2t1ad8xi8xOkDO6QMKwaR9v8gnUQUYv-7ytYJrOOthjWuDb70CxZskv5IzOielzlkPKSmOKFCX1MvmeY-hKDEsZvLHQOaj74-NBde1VssOb0-PeZm6dfKySU6SqCMcbIeABx6GXWdTazKoOyIj-EON5TsF20faNTfO37fHahg9R96tZA76wy9-ObeRyD6LPizsrR0dJgI~W9TEZaOHvi-cvWWacdAVZLFPPdnaYNNgDLt6qVBYBkL6rem2m6ONqKdc0u7mBpQDYQIJkSc39eyBXwA__&Key-Pair-Id=APKAJKQQ2INNHTYFB44A'
[hlsnative] Downloading m3u8 manifest
[hlsnative] Total fragments: 138
[download] Destination: Saekano -How to Raise a Boring Girlfriend- – Fan Service of Love and Youth-668047.mp4
[download] 100% of 114.65MiB in 03:55
[debug] ffmpeg command line: ffprobe -show_streams "file:Saekano -How to Raise a Boring Girlfriend- – Fan Service of Love and Youth-668047.mp4"
[ffmpeg] Fixing malformed AAC bitstream in "Saekano -How to Raise a Boring Girlfriend- – Fan Service of Love and Youth-668047.mp4"
[debug] ffmpeg command line: ffmpeg -y -i "file:Saekano -How to Raise a Boring Girlfriend- – Fan Service of Love and Youth-668047.mp4" -c copy -f mp4 "-bsf:a" aac_adtstoasc "file:Saekano -How to Raise a Boring Girlfriend- – Fan Service of Love and Youth-668047.temp.mp4"

C>

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WARNING: unable to extract series
I'm assuming that the problem is that this is Episode 0, but I don't know if Crunchyroll failed to provide any episode number to the downloader, or if the downloader simply didn't know what to do with a zero. All of the other episodes in the series included the episode number in the output file, for example "Saekano -How to Raise a Boring Girlfriend- Episode 1 – An Error-Ridden Prologue-668049.enUS.ass", but this one omitted the word "Episode" and the number. Apart from that, it seems to have downloaded the files just fine.