Some TED videos do not download

[ZNemesis]

• I've verified and I assure that I'm running youtube-dl 2018.06.18
• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser
• 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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C:\Users\ZNemesis\Downloads\youtube-dl>youtube-dl.exe --verbose https://www.ted.com/talks/tom_thum_the_orchestra_in_my_mouth
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'https://www.ted.com/talks/tom_thum_the_orchestra_in_my_mouth']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2018.06.18
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.16299
[debug] exe versions: ffmpeg 3.4.1, ffprobe 3.4.1
[debug] Proxy map: {}
[ted] tom_thum_the_orchestra_in_my_mouth: Downloading webpage
ERROR: An extractor error has occurred. (caused by KeyError('nativeDownloads',)); 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\rg3\tmpu1zifx01\build\youtube_dl\extractor\common.py", line 500, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpu1zifx01\build\youtube_dl\extractor\ted.py", line 131, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpu1zifx01\build\youtube_dl\extractor\ted.py", line 184, in _talk_info
KeyError: 'nativeDownloads'
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpu1zifx01\build\youtube_dl\extractor\common.py", line 500, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpu1zifx01\build\youtube_dl\extractor\ted.py", line 131, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpu1zifx01\build\youtube_dl\extractor\ted.py", line 184, in _talk_info
KeyError: 'nativeDownloads'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpu1zifx01\build\youtube_dl\YoutubeDL.py", line 792, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpu1zifx01\build\youtube_dl\extractor\common.py", line 513, in extract
youtube_dl.utils.ExtractorError: An extractor error has occurred. (caused by KeyError('nativeDownloads',)); 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.

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Description of your issue, suggested solution and other information

This particular video does not download https://www.ted.com/talks/tom_thum_the_orchestra_in_my_mouth but other TED videos do work, for example https://www.ted.com/talks/nicole_paris_and_ed_cage_a_beatboxing_lesson_from_a_father_daughter_duo

[rajalakshmi-v15]

Hi, @ZNemesis. May I know whether this issue is suitable for a beginner? If yes, I would like to work on it.

[timendum]

Hi @rajalakshmi-v15
I think this is a great issue for a beginner, the error is quite clear from the description and it's repeatable.