'No video formats found' when access dash manifest

[srstrong]

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

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'-F', u'http://127.0.0.1:3001/vod/stream/dash/high/manifest.mpd']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.04.25
[debug] Python version 2.7.10 (CPython) - Darwin-17.5.0-x86_64-i386-64bit
[debug] exe versions: none
[debug] Proxy map: {}
[generic] manifest: Requesting header
WARNING: Falling back on generic information extractor.
[generic] manifest: Downloading webpage
[generic] manifest: Extracting information
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 "./youtube-dl/youtube_dl/YoutubeDL.py", line 789, in extract_info
    ie_result = ie.extract(url)
  File "./youtube-dl/youtube_dl/extractor/common.py", line 440, in extract
    ie_result = self._real_extract(url)
  File "./youtube-dl/youtube_dl/extractor/generic.py", line 2254, in _real_extract
    self._sort_formats(info_dict['formats'])
  File "./youtube-dl/youtube_dl/extractor/common.py", line 1083, 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.

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Description of your issue, suggested solution and other information

Attempting to download a dash stream from a local server - mpd is working, stream plays in various players, there's no DRM or other security measure in place. youtube-dl always just fails with 'No video formats found'

Given it's a local server, I can't provide access - but a just picking a random sample manifest such as http://vm2.dashif.org/livesim/testpic_2s/Manifest.mpd gives the same error.

[dstftw]

DASH live streams are not supported.