nicovideo.jp issue

Checklist

• I’m reporting a broken site support
• I’ve verified that I’m running youtube-dl version 2021.06.06
• I’ve checked that all provided URLs are alive and playable in a browser
• I’ve checked that all URLs and arguments with special characters are properly quoted or escaped
• I’ve searched the bugtracker for similar issues including closed ones

Verbose log

C:\Users\XXXXX>"C:\Users\XXXXX\Desktop\Video Tools\Youtube DL\youtube-dl.exe" --verbose  https://www.nicovideo.jp/watch/sm12134023
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'https://www.nicovideo.jp/watch/sm12134023']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.19041
[debug] exe versions: ffmpeg 4.4-full_build-www.gyan.dev, ffprobe 4.4-full_build-www.gyan.dev
[debug] Proxy map: {}
[niconico] sm12134023: Downloading webpage
[niconico] sm12134023: Downloading flv info
ERROR: Unable to find video URL; 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.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\extractor\niconico.py", line 291, in _real_extract
KeyError: 'smileInfo'
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\extractor\niconico.py", line 291, in _real_extract
KeyError: 'smileInfo'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\YoutubeDL.py", line 815, in wrapper
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\YoutubeDL.py", line 836, in __extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\extractor\common.py", line 534, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\extractor\niconico.py", line 310, in _real_extract
youtube_dl.utils.ExtractorError: Unable to find video URL; 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.

Description

Unable to download from the above website. Related bugs suggest problems with downloading speeds or requiring a login. Neither of those issues appear to be related to the problem I am having.

[CXwudi]

For downloading nicovideo.jp, I recommend using one of the following alternatives (this list is copied from my another abandoned project readme file):

• yt-dlp, which contains tsukumijima’s niconico fix
• nndownload, a python command line downloader for niconico only
• nao20010128nao’s yt-dlp fork
• animelover1984’s youtube-dl

[no1d]

Thanks for the patch! Required a bit more fixing though. See here https://github.com/no1d/youtube-dl/commit/e493896925f99c5781f5e490ecec109a46213869