[prosiebensat1] terminates at "Downloading webpage" without error

[barsnick]

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 2017.02.17. 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 Issues with outdated version will be rejected.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 2017.02.17

Before submitting an issue make sure you 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

---

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:

[barsnick@goodtimes SAT1]$ ../youtube-dl -v http://www.sat1.de/tv/einstein/episoden/h2o
[debug] System config: [u'--prefer-free-formats']
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'http://www.sat1.de/tv/einstein/episoden/h2o']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.02.17
[debug] Python version 2.7.13 - Linux-4.9.9-100.fc24.x86_64-x86_64-with-fedora-24-Twenty_Four
[debug] exe versions: ffmpeg 3.2.4, ffprobe 3.2.4, rtmpdump 2.4
[debug] Proxy map: {}
[prosiebensat1] tv/einstein/episoden/h2o: Downloading webpage
[barsnick@goodtimes SAT1]$ echo $?
0

---

Description of your issue, suggested solution and other information

Downloading from a given URL from Germany's SAT.1 video service, youtube-dl terminates after the message "Downloading webpage" without any sign of error - no message, no return code != 0.

It is probably okay not to download a video, because it seems to have expired and is no longer available on the site. The URL is even misleading, and wouldn't be the correct one for the extractor to process. A URL for a formerly accessable episode is actually something like:
http://www.sat1.de/tv/einstein/video/11-staffel-1-episode-1-ballistik-ganze-folge

Yet there needs to be some indication from youtube-dl that nothing was downloaded or an incorrect URL was given (even if the extractor's regular expression matches it) - a warning or error message, a return code.