The new site of the first channel leads to Unsupported URL error

[kvk-2015]

• I've verified and I assure that I'm running youtube-dl 2016.04.19

Before submitting an issue I have:

• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

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

---

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-f', 'best', '--verbose', 'http://www.1tv.ru/shows/chto-gde-kogda/vypuski/chetvertaya-igra-vesenney-serii-chto-gde-kogda-vypusk-ot-17042016']
[debug] Encodings: locale cp1251, fs mbcs, out cp1251, pref cp1251
[debug] youtube-dl version 2016.04.19
[debug] Python version 3.5.1 - Windows-10-10.0.10586-SP0
[debug] exe versions: ffmpeg N-79209-gb3eda69, ffprobe N-79209-gb3eda69
[debug] Proxy map: {}
[generic] chetvertaya-igra-vesenney-serii-chto-gde-kogda-vypusk-ot-17042016: Requesting header
WARNING: Falling back on generic information extractor.
[generic] chetvertaya-igra-vesenney-serii-chto-gde-kogda-vypusk-ot-17042016: Downloading webpage
[generic] chetvertaya-igra-vesenney-serii-chto-gde-kogda-vypusk-ot-17042016: Extracting information
ERROR: Unsupported URL: http://www.1tv.ru/shows/chto-gde-kogda/vypuski/chetvertaya-igra-vesenney-serii-chto-gde-kogda-vypusk-ot-17042016
Traceback (most recent call last):
  File "c:\users\*********\appdata\local\programs\python\python35-32\lib\site-packages\youtube_dl\YoutubeDL.py", line 671, in extract_info
    ie_result = ie.extract(url)
  File "c:\users\*********\appdata\local\programs\python\python35-32\lib\site-packages\youtube_dl\extractor\common.py", line 341, in extract
    return self._real_extract(url)
  File "c:\users\*********\appdata\local\programs\python\python35-32\lib\site-packages\youtube_dl\extractor\generic.py", line 2044, in _real_extract
    raise UnsupportedError(url)
youtube_dl.utils.UnsupportedError: Unsupported URL: http://www.1tv.ru/shows/chto-gde-kogda/vypuski/chetvertaya-igra-vesenney-serii-chto-gde-kogda-vypusk-ot-17042016

---

Description of issue, suggested solution and other information

About two weeks ago 1tv.ru introdused a new website where old extractor does not work.
Looks like this changes in firsttv.py fixes error:

import re
try:
    from html import unescape as html_unescape
except ImportError:
    html_unescape = lambda x: x.replace("&", "&")
...
    _VALID_URL = r'https?://(?:www\.)?1tv\.ru/(?:[^/]+/)*(?P<id>[a-z\d-]+)'
...
    def _real_extract(self, url):
        display_id = self._match_id(url)
        webpage = self._download_webpage(url, display_id)
        mobj = re.search(r'data-playlist-url="(?P<playlist_url>[^"]+)".+?data-start-id="(?P<id>[^"]+)"', webpage)
        if mobj:
            video_id = mobj.group('id')
            playlist_url = html_unescape(mobj.group('playlist_url'))
            video = self._download_json("http://www.1tv.ru{0}".format(playlist_url), video_id, fatal=False)
        else:
            video = None
        description, thumbnail, upload_date, duration = [None] * 4

[kotofond]

I get youtube_dl.utils.ExtractorError: Could not find XML element ./channel/item when downloading another 1tv video:

D:\>youtube-dl --verbose https://www.1tv.ru/news/2016/04/21/300796-evropeyskaya_sistema_bezopasnosti_v_ocherednoy_raz_dala_sboy
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'https://www.1tv.ru/news/2016/04/21/300796-evropeyskaya_sistema_bezopasnosti_v_ocherednoy_raz_dala_sboy']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2016.04.19
[debug] Python version 3.5.1 - Windows-10-10.0.10586-SP0
[debug] exe versions: ffmpeg N-78358-g674cc26, ffprobe N-78358-g674cc26
[debug] Proxy map: {}
[1tv] 300796: Downloading JSON metadata
[1tv] 300796: Downloading XML
ERROR: Could not find XML element ./channel/item; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "c:\python35\lib\site-packages\youtube_dl\YoutubeDL.py", line 671, in extract_info
    ie_result = ie.extract(url)
  File "c:\python35\lib\site-packages\youtube_dl\extractor\common.py", line 341, in extract
    return self._real_extract(url)
  File "c:\python35\lib\site-packages\youtube_dl\extractor\firsttv.py", line 99, in _real_extract
    item = xpath_element(video, './channel/item', fatal=True)
  File "c:\python35\lib\site-packages\youtube_dl\utils.py", line 210, in xpath_element
    raise ExtractorError('Could not find XML element %s' % name)
youtube_dl.utils.ExtractorError: Could not find XML element ./channel/item; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.