No video formats found

[jd1008]

Checklist

• [x ] I'm reporting a broken site support
• [x ] I've verified that I'm running youtube-dl version 2019.06.21
• [x ] I've checked that all provided URLs are alive and playable in a browser
• [x ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
• [x ] I've searched the bugtracker for similar issues including closed ones

Verbose log

[debug] System config: [u'-ci', u'-f', u'best', u'-v', u'--sub-lang', u'en', u'--convert-subs', u'srt', u'--embed-subs', u'--fixup', u'warn', u'--audio-quality', u'320k']
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'-F', u'https://www.youtube.com/watch?v=nN0zA48bifc']
[debug] Encodings: locale UTF-8, fs UTF-8, out None, pref UTF-8
[debug] youtube-dl version 2019.06.21
[debug] Python version 2.7.5 (CPython) - Linux-3.19.8-100.fc20.x86_64-x86_64-with-fedora-20-Heisenbug
[debug] exe versions: avconv 11.7, avprobe 11.7, ffmpeg 3.1.3-static, ffprobe N-51556-ge278500
[debug] Proxy map: {}
[youtube] nN0zA48bifc: Downloading webpage
[youtube] nN0zA48bifc: Downloading embed webpage
[youtube] nN0zA48bifc: Refetching age-gated info webpage
ERROR: No video formats found; 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 "/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 796, in extract_info
ie_result = ie.extract(url)
File "/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
ie_result = self._real_extract(url)
File "/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 2349, in _real_extract
self._sort_formats(formats)
File "/bin/youtube-dl/youtube_dl/extractor/common.py", line 1327, in _sort_formats
raise ExtractorError('No video formats found')
ExtractorError: No video formats found; 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

Well, I wanted to download the video, and youtube-dl said no formats.
and yet, some other videos do download. Not sure what the difference is between
videos that are downloadable vs videos that are not.