Repository: youtube-dl
Issue: MSNBC Livestream errors
Labels: bug

## Please follow the guide below

- You will be asked some questions and requested to provide some information, please read them **carefully** and answer honestly
- Put an `x` into all the boxes [ ] relevant to your *issue* (like that [x])
- Use *Preview* tab to see how your issue will actually look like

---

### Make sure you are using the *latest* version: run `youtube-dl --version` and ensure your version is *2017.02.24.1*. If it's not read [this FAQ entry](https://github.com/rg3/youtube-dl/blob/master/README.md#how-do-i-update-youtube-dl) and update. Issues with outdated version will be rejected.
- [x] I've **verified** and **I assure** that I'm running youtube-dl **2017.02.24.1**

### Before submitting an *issue* make sure you have:
- [x] At least skimmed through [README](https://github.com/rg3/youtube-dl/blob/master/README.md) and **most notably** [FAQ](https://github.com/rg3/youtube-dl#faq) and [BUGS](https://github.com/rg3/youtube-dl#bugs) sections
- [x] [Searched](https://github.com/rg3/youtube-dl/search?type=Issues) the bugtracker for similar issues including closed ones

### What is the purpose of your *issue*?
- [x] 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)
- [ ] Question
- [ ] Other

---

### 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:\Users\Michelle\Videos>youtube-dl --verbose -- http://www.msnbc.com/live-online/watch/live-streaming-will-resume-shortly-871842883738
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--', 'http://www.msnbc.com/live-online/watch/live-streaming-will-resume-shortly-871842883738']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2017.02.24.1
[debug] Python version 3.4.4 - Windows-10-10.0.14393
[debug] exe versions: ffmpeg N-79000-g66edd86, ffprobe N-79000-g66edd86
[debug] Proxy map: {}
[NBCNews] 871842883738: Downloading webpage
[ThePlatformFeed] n_shift_livesho_170207: Downloading JSON metadata
Traceback (most recent call last):
  File "__main__.py", line 19, in <module>
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\__init__.py", line 457, in main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\__init__.py", line 447, in _real_main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\YoutubeDL.py", line 1883, in download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\YoutubeDL.py", line 772, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\YoutubeDL.py", line 838, in process_ie_result
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\YoutubeDL.py", line 761, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\extractor\common.py", line 427, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\extractor\theplatform.py", line 378, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\extractor\theplatform.py", line 313, in _extract_feed_info
IndexError: list index out of range
```

```
C:\Users\Michelle\Videos>youtube-dl --verbose -- http://www.msnbc.com/msnbc-live
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--', 'http://www.msnbc.com/msnbc-live']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2017.02.24.1
[debug] Python version 3.4.4 - Windows-10-10.0.14393
[debug] exe versions: ffmpeg N-79000-g66edd86, ffprobe N-79000-g66edd86
[debug] Proxy map: {}
[NBCNews] live: Downloading webpage
ERROR: An extractor error has occurred. (caused by KeyError('meta',)); 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\tmpl89hv5ts\build\youtube_dl\extractor\common.py", line 427, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\extractor\nbc.py", line 371, in _real_extract
KeyError: 'meta'
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\extractor\common.py", line 427, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\extractor\nbc.py", line 371, in _real_extract
KeyError: 'meta'

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\tmpl89hv5ts\build\youtube_dl\YoutubeDL.py", line 761, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpl89hv5ts\build\youtube_dl\extractor\common.py", line 440, in extract
youtube_dl.utils.ExtractorError: An extractor error has occurred. (caused by KeyError('meta',)); 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 of your *issue*, suggested solution and other information

These were found whilst seeing if youtube-dl would work with MSNBC's live stream of their own content. I know normally youtube-dl does not spit out a trace when a URL is not found, though it seems the MSNNews extractor caught it and attempted to download it as a pre-recorded video (not a stream), hence the first error above. Both of the URLs that I try above should lead to the same page (the second URL lead to the first URL in a web browser).

I am fairly certain, regardless of whether this is an extractor catching a URL it can't actually handle or not, the errors should not have been thrown, however. If it is indeed an extractor catching a URL it cannot handle, I would recommend having it error out in a more proper way, instead of throwing a trace.