Repository: youtube-dl
Issue: Download all episodes from stream.cz
Labels: request

- [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*?
- [ ] Bug report (encountered problems with youtube-dl)
- [x] Site support request (request for adding support for a new site)
- [x] Feature request (request for a new functionality)
- [ ] Question
- [ ] Other

---

### If the purpose of this *issue* is a *site support request* please provide all kinds of example URLs support for which should be included (replace following example URLs by **yours**):
- Show: https://www.stream.cz/pohadky/krtek

Note that **youtube-dl does not support sites dedicated to [copyright infringement](https://github.com/rg3/youtube-dl#can-you-add-support-for-this-anime-video-site-or-site-which-shows-current-movies-for-free)**. In order for site support request to be accepted all provided example URLs should not violate any copyrights.

---

### Description of your *issue*, suggested solution and other information

Just as the title says. It would be really nice to be able to download all episodes of given show.

```
youtube-dl https://www.stream.cz/pohadky/krtek 
[debug] System config: []
[debug] User config: [u'-v', u'--console-title']
[debug] Custom config: []
[debug] Command-line args: [u'https://www.stream.cz/pohadky/krtek']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.02.24.1
[debug] Python version 2.7.12+ - Linux-4.8.0-40-generic-x86_64-with-Ubuntu-16.10-yakkety
[debug] exe versions: ffmpeg 3.0.7-0ubuntu0.16.10.1, ffprobe 3.0.7-0ubuntu0.16.10.1
[debug] Proxy map: {}
[generic] krtek: Requesting header
WARNING: Falling back on generic information extractor.
[generic] krtek: Downloading webpage
[generic] krtek: Extracting information
ERROR: Unsupported URL: https://www.stream.cz/pohadky/krtek
Traceback (most recent call last):
  File "/home/pitel/bin/youtube-dl/youtube_dl/extractor/generic.py", line 1744, in _real_extract
    doc = compat_etree_fromstring(webpage.encode('utf-8'))
  File "/home/pitel/bin/youtube-dl/youtube_dl/compat.py", line 2526, in compat_etree_fromstring
    doc = _XML(text, parser=etree.XMLParser(target=_TreeBuilder(element_factory=_element_factory)))
  File "/home/pitel/bin/youtube-dl/youtube_dl/compat.py", line 2515, 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: mismatched tag: line 86, column 3
Traceback (most recent call last):
  File "/home/pitel/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 761, in extract_info
    ie_result = ie.extract(url)
  File "/home/pitel/bin/youtube-dl/youtube_dl/extractor/common.py", line 427, in extract
    ie_result = self._real_extract(url)
  File "/home/pitel/bin/youtube-dl/youtube_dl/extractor/generic.py", line 2604, in _real_extract
    raise UnsupportedError(url)
UnsupportedError: Unsupported URL: https://www.stream.cz/pohadky/krtek
```