PS4 has relatively no support for local files. PLEX Media Server is the perfect way to access all of your personal media content on the PS4, right in the browser via HTML5. :
Twitch is stepping up its game with a PlayStation app, HTML5 player, and video playlists - HardwareZone.com.sg
PlayStation 4 (PS4) : le HTML5 est-il bien supporté ? - GAMERGEN.COM
Сессии о PS4, HTML5, Project Shield и Oculus Rift добавлены в программу GDC 2013
Exploring and Developing for the PS4 browser
クラウドゲームはコンソールを殺さない - by 吉田拓史 Yoshi - Axion Newsletter