format and duration issues with *tube sites

[przemyslawpluta]

• I've verified and I assure that I'm running youtube-dl 2016.05.01
• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Bug report (encountered problems with youtube-dl)

przemyslawpluta/node-youtube-dl#101

MacBook-Air:~ will$ youtube-dl -v http://www.redtube.com/1538723 --dump-json
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.redtube.com/1538723', u'--dump-json']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.05.01
[debug] Python version 2.7.9 - Darwin-14.0.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 2.5.2, ffprobe 2.5.2, rtmpdump 2.4
[debug] Proxy map: {}
{"display_id": "1538723", "extractor": "RedTube", "protocol": "http", "format": "0 - unknown", "requested_subtitles": null, "format_id": "0", "id": "1538723", "playlist": null, "thumbnails": [{"url": "http://thumbs.cdn.redtube.com/media/videos/0001538/1538723/thumbs/1538723_012m.jpg", "id": "0"}], "http_headers": {"Accept-Charset": "ISO-8859-1,utf-8;q=0.7,*;q=0.7", "Accept-Language": "en-us,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/44.0 (Chrome)"}, "url": "http://vida.lsw.hd.redtubefiles.com/videos/0001538/_hd/1538723.mp4?st=2jZjklRojLyRPGs6PKMlew&e=1462395265&rs=151&ri=1400", "extractor_key": "RedTube", "title": "Sensual hardcore seduction very young teen", "playlist_index": null, "ext": "mp4", "webpage_url": "http://www.redtube.com/1538723", "_filename": "Sensual hardcore seduction very young teen-1538723.mp4", "fulltitle": "Sensual hardcore seduction very young teen", "age_limit": 18, "thumbnail": "http://thumbs.cdn.redtube.com/media/videos/0001538/1538723/thumbs/1538723_012m.jpg", "webpage_url_basename": "1538723"}

[yan12125]

Redtube does not provide duration information in their webpages. If you find a way to get duration without actual downloading the video, feel free to propose it here.

[kidol]

@yan12125

If you find a way to get duration

Any possible way? There is this: http://api.redtube.com/?data=redtube.Videos.getVideoById&video_id=15485&output=json&thumbsize=big

// Oh sorry I didn't see commit..