The store PlayStation Network appeared media player Plex, allows you to watch movies and TV series on the PlayStation 4.
Plex - a media player that consists of client and server. The server part is installed on a computer with movies or NAS, and is responsible for drawing the user's library. The client part is placed on the console, another computer or mobile device, and displays the movies from the server user. As consoles and many other devices is not supported by all modern video formats and codecs, it is desirable to use as a server computer, powerful enough for video transcoding "on the fly".
Until now, PlayStation 4 has been rather limited media features: unlike the PS3 the new console does not support movie playback from external media, and even a music player and a full YouTube client appeared on the console about a year after launch .
Plex previously appeared on the platform Xbox One, but for its use requires a subscription Plex Pass. Do I need a subscription to PlayStation 4 is not reported.
UPD: As suggested in the comments by Millia Rage , PlayStation-version requires a subscription for five dollars a month. However, after the launch of versions for Xbox One, developers have reported that after some time the application will not require a subscription and will be available after a one-time payment. Most likely, so will the version for the PS4.