[orf] Subtitles are not detected

[hurda]

• I've verified and I assure that I'm running youtube-dl 2016.10.16

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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>youtube-dl.exe -F --list-subs -v http://tvthek.orf.at/profile/Thema/11523190/Thema/13886780
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-F', '--list-subs', '-v', 'http://tvthek.orf.at/profile/Thema/11523190/Thema/13886780']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2016.10.16
[debug] Python version 3.4.4 - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg N-73361-g03b2b40, ffprobe N-73361-g03b2b40, rtmpdump 2.4
[debug] Proxy map: {}
[orf:tvthek] 13886780: Downloading webpage
[orf:tvthek] 13886781: Checking hls-QXB-adaptiv video format URL
[orf:tvthek] 13886781: Checking hds-Q1A-niedrig video format URL
[orf:tvthek] 13886781: Checking hds-Q4A-mittel video format URL
[orf:tvthek] 13886781: Checking hds-Q6A-hoch video format URL
[orf:tvthek] 13886781: Checking hds-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886781: Checking hls-Q1A-niedrig video format URL
[orf:tvthek] 13886781: Checking hls-Q4A-mittel video format URL
[orf:tvthek] 13886781: Checking hls-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886781: Checking progressive-Q1A-niedrig video format URL
[orf:tvthek] 13886781: Checking progressive-Q4A-mittel video format URL
[orf:tvthek] 13886781: Checking progressive-Q6A-hoch video format URL
[orf:tvthek] 13886781: Checking progressive-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886782: Checking hls-QXB-adaptiv video format URL
[orf:tvthek] 13886782: Checking hds-Q1A-niedrig video format URL
[orf:tvthek] 13886782: Checking hds-Q4A-mittel video format URL
[orf:tvthek] 13886782: Checking hds-Q6A-hoch video format URL
[orf:tvthek] 13886782: Checking hds-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886782: Checking hls-Q1A-niedrig video format URL
[orf:tvthek] 13886782: Checking hls-Q4A-mittel video format URL
[orf:tvthek] 13886782: Checking hls-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886782: Checking progressive-Q1A-niedrig video format URL
[orf:tvthek] 13886782: Checking progressive-Q4A-mittel video format URL
[orf:tvthek] 13886782: Checking progressive-Q6A-hoch video format URL
[orf:tvthek] 13886782: Checking progressive-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886783: Checking hls-QXB-adaptiv video format URL
[orf:tvthek] 13886783: Checking hds-Q1A-niedrig video format URL
[orf:tvthek] 13886783: Checking hds-Q4A-mittel video format URL
[orf:tvthek] 13886783: Checking hds-Q6A-hoch video format URL
[orf:tvthek] 13886783: Checking hds-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886783: Checking hls-Q1A-niedrig video format URL
[orf:tvthek] 13886783: Checking hls-Q4A-mittel video format URL
[orf:tvthek] 13886783: Checking hls-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886783: Checking progressive-Q1A-niedrig video format URL
[orf:tvthek] 13886783: Checking progressive-Q4A-mittel video format URL
[orf:tvthek] 13886783: Checking progressive-Q6A-hoch video format URL
[orf:tvthek] 13886783: Checking progressive-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886784: Checking hls-QXB-adaptiv video format URL
[orf:tvthek] 13886784: Checking hds-Q1A-niedrig video format URL
[orf:tvthek] 13886784: Checking hds-Q4A-mittel video format URL
[orf:tvthek] 13886784: Checking hds-Q6A-hoch video format URL
[orf:tvthek] 13886784: Checking hds-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13890787: Checking progressive-Q1A-niedrig video format URL
[orf:tvthek] 13890787: Checking progressive-Q4A-mittel video format URL
[orf:tvthek] 13890787: Checking progressive-Q6A-hoch video format URL
[orf:tvthek] 13890787: Checking progressive-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886785: Checking hls-QXB-adaptiv video format URL
[orf:tvthek] 13886785: Checking hds-Q1A-niedrig video format URL
[orf:tvthek] 13886785: Checking hds-Q4A-mittel video format URL
[orf:tvthek] 13886785: Checking hds-Q6A-hoch video format URL
[orf:tvthek] 13886785: Checking hds-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886785: Checking hls-Q1A-niedrig video format URL
[orf:tvthek] 13886785: Checking hls-Q4A-mittel video format URL
[orf:tvthek] 13886785: Checking hls-Q8C-sehr hoch (HD) video format URL
[orf:tvthek] 13886785: Checking progressive-Q1A-niedrig video format URL
[orf:tvthek] 13886785: Checking progressive-Q4A-mittel video format URL
[orf:tvthek] 13886785: Checking progressive-Q6A-hoch video format URL
[orf:tvthek] 13886785: Checking progressive-Q8C-sehr hoch (HD) video format URL
[download] Downloading playlist: 13886780
[orf:tvthek] playlist 13886780: Collected 6 video ids (downloading 6 of them)
[download] Downloading video 1 of 6
13886781 has no subtitles
[download] Downloading video 2 of 6
13886782 has no subtitles
[download] Downloading video 3 of 6
13886783 has no subtitles
[download] Downloading video 4 of 6
13886784 has no subtitles
[download] Downloading video 5 of 6
13890787 has no subtitles
[download] Downloading video 6 of 6
13886785 has no subtitles
[download] Finished downloading playlist: 13886780

---

http://tvthek.orf.at/profile/Thema/11523190/Thema/13886780

---

youtube-dl says there are no subtitles for the videos, but they are offered per substream in VTT-, SMIL-, TTML- and SRT-format.

In the source-code it looks like this:

"subtitles":[{"src":"http:\/\/api-tvthek.orf.at\/uploads\/media\/subtitles\/0001\/13\/fcf5093f6fd023371a0b651c2c9bf3cb4b802854.srt","type":"srt","lang":"de-AT"},{"src":"http:\/\/api-tvthek.orf.at\/uploads\/media\/subtitles\/0001\/13\/e405be4f7849221dfa97f4d3233ce074feeb2710.vtt","type":"vtt","lang":"de-AT"},{"src":"http:\/\/api-tvthek.orf.at\/uploads\/media\/subtitles\/0001\/13\/0f4ebab847c4e14dd4a390674e56425745ca9c90.smi","type":"sami","lang":"de-AT"},{"src":"http:\/\/api-tvthek.orf.at\/uploads\/media\/subtitles\/0001\/13\/095b15363c3352b80c7ddd8c430dca9c4c8d9caf.ttml","type":"ttml","lang":"de-AT"}],"