uptostream.com/iframe not working

[Ara0n]

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• 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 this: [x])
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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2019.02.18. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2019.02.18

Before submitting an issue make sure you have:

• 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

What is the purpose of your issue?

• 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

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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

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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 ```):

youtube-dl -v https://uptostream.com/iframe/qj1z477e0ntm -o test.mp4
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'https://uptostream.com/iframe/qj1z477e0ntm', u'-o', u'test.mp4']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.02.18
[debug] Python version 2.7.15+ (CPython) - Linux-4.18.0-2-amd64-x86_64-with-debian-buster-sid
[debug] exe versions: ffmpeg 4.1-1, ffprobe 4.1-1
[debug] Proxy map: {}
[generic] qj1z477e0ntm: Requesting header
WARNING: Falling back on generic information extractor.
[generic] qj1z477e0ntm: Downloading webpage
[generic] qj1z477e0ntm: Extracting information
ERROR: Unsupported URL: https://uptostream.com/iframe/qj1z477e0ntm
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/generic.py", line 2337, in _real_extract
    doc = compat_etree_fromstring(webpage.encode('utf-8'))
  File "/usr/local/bin/youtube-dl/youtube_dl/compat.py", line 2542, in compat_etree_fromstring
    doc = _XML(text, parser=etree.XMLParser(target=_TreeBuilder(element_factory=_element_factory)))
  File "/usr/local/bin/youtube-dl/youtube_dl/compat.py", line 2531, in _XML
    parser.feed(text)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1659, in feed
    self._raiseerror(v)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1523, in _raiseerror
    raise err
ParseError: mismatched tag: line 36, column 2
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 794, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 508, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/generic.py", line 3320, in _real_extract
    raise UnsupportedError(url)
UnsupportedError: Unsupported URL: https://uptostream.com/iframe/qj1z477e0ntm
...
<end of log>

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Description of your issue, suggested solution and other information

Explanation of your issue in arbitrary form goes here. Please make sure the description is worded well enough to be understood. Provide as much context and examples as possible.
If work on your issue requires account credentials please provide them or explain how one can obtain them.

I tried multiple different urls but all of them resulted in that same error.

[DiagonalArg]

I appear to be having similar problems with version 2019.06.08. (None of the online downloaders I can find are working, either.)

$ youtube-dl --verbose --prefer-ffmpeg "https://uptostream.com/iframe/ucz8elinfcp6"
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'--prefer-ffmpeg', u'https://uptostream.com/iframe/ucz8elinfcp6']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.06.08
[debug] Python version 2.7.12 (CPython) - Linux-4.4.0-150-generic-x86_64-with-Ubuntu-16.04-xenial
[debug] exe versions: avconv 3.4.4-1, avprobe 3.4.4-1, ffmpeg 3.4.4-1, ffprobe 3.4.4-1, rtmpdump 2.4
[debug] Proxy map: {'socks': 'socks://localhost:9999/'}
[generic] ucz8elinfcp6: Requesting header
WARNING: Falling back on generic information extractor.
[generic] ucz8elinfcp6: Downloading webpage
[generic] ucz8elinfcp6: 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 "/home/dev/bin/youtube-dl.new/youtube_dl/extractor/generic.py", line 2340, in _real_extract
    doc = compat_etree_fromstring(webpage.encode('utf-8'))
  File "/home/dev/bin/youtube-dl.new/youtube_dl/compat.py", line 2551, in compat_etree_fromstring
    doc = _XML(text, parser=etree.XMLParser(target=_TreeBuilder(element_factory=_element_factory)))
  File "/home/dev/bin/youtube-dl.new/youtube_dl/compat.py", line 2540, in _XML
    parser.feed(text)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1653, in feed
    self._raiseerror(v)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1517, in _raiseerror
    raise err
ParseError: junk after document element: line 2, column 0
Traceback (most recent call last):
  File "/home/dev/bin/youtube-dl.new/youtube_dl/YoutubeDL.py", line 796, in extract_info
    ie_result = ie.extract(url)
  File "/home/dev/bin/youtube-dl.new/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/home/dev/bin/youtube-dl.new/youtube_dl/extractor/generic.py", line 3165, in _real_extract
    self._sort_formats(entry['formats'])
  File "/home/dev/bin/youtube-dl.new/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.

[DiagonalArg]

Looking at the source of the uptostream.com page, I find that this URL is working, though it's quite slow:

https://www46.uptostream.com/igw2hk2809/360/0/video.mp4

In that source there is also a link for subtitles, but I'm unable to retreive them:

https://www46.uptostream.com/subtitles/1e27e4a2bd0a01f233a6dd67a1b75c06_.vtt