For http://www.rtve.es/alacarta/videos/documentos-tv/documentos-tv-revolucion-del-movil/3069778/ using 'auth/resources' fails, and other URLs seem to work fine.
https://github.com/rg3/youtube-dl/commit/0385aa6199206e4ba7745efec73be26c5826286a#commitcomment-18233275 manifests with higher birate require more time to check formats
SOCKS tests never run on Travis CI due to unknown reasons, and downloading them broke some tests (e.g. https://travis-ci.org/rg3/youtube-dl/builds/144306425)
Blocks https://travis-ci.org/rg3/youtube-dl/jobs/143809100
Used in biobiochile.tv
Depends on #8876
[extractor/common] add helper method to extract html5 media entries
[ffmpeg] Fix embedding subtitles (#9063)
Until agreed with some solution