Smartphones
iphone 6
Screen replacement
Using
magnifier glass
About
cell phone plans
Smartphones abroad
Related topics
© The scientific sentence. 2010
|
Technologie :
Smartphones
Streaming and downloading
Netflix
1. Streaming and downloading
Streaming and downloading are two
ways you can access digital media content (photos,
music, videos). These terms are not interchangeable,
they actually describe two different processes.
• Dowloading is connecting a device to the
source of the file, then copies and saves it
to your hard drive. The downloaded file can be
streamed to other devices once it has been saved.
• Streaming describes the act of
playing media on one device when the media
is saved on another.
A streamed file plays from other sources. The source
of the media must be connected and turned on, or
the streaming stops.
You watch and listen to streaming video and music as it
comes to your computer or network media player.
A streaming file is never saved on your device.
Streaming media can be either free, as it is on some
network channels; or to be charged a monthly
subscription to access the media, such as with
Netflix or you rent the video
for a certain length of time, after which it is no longer
available without renting it again.
Netflix is an online movie rental service.
Started in California in 1997, It allows members to
rent movies on DVD or Blu-ray. It
rent also watching movies and TV shows
online with a computer, game console, smartphone, or
Internet-connected TV.
2. DVD and Blu-ray Disc
1. DVD
DVD stands for Digital Versatile Disc, or Digital
Video Disc. They are read with a laser. There are two
kinds of DVD: Single layer and dual layer.
A DVD is an optical disc capable ofstoring up to 4.7 GB of
data, more than six times what a CD can hold.
DVDs are often used to store movies at better quality
than a VHS (Video Home System: casette).
The disc can have one or two sides, and one or two layers of
data per side; the number of sides and layers determines how much
it can hold. A 12 cm diameter disc may have a
storage capacities ranging from 4.7 gigabytes (GB)
for a DVD-5: single sided, single layer; to
17.1 GB for a DVD-18: double sided, double layer
on both sides.
2. Blu-ray Disc
Blu-ray Disc is a high-density optical disc format similar
to DVD. Blu-ray is the type of disc used for PlayStation 3
games and for playing high-definition (HD) movies.
A dual-layer Blu-ray disc can store up to 50GB
(gigabytes) of data. This is over five times the
capacity of a DVD, and over 70 times more than a CD or VCD.
A Video CD or VCD is a CD that contains a movie instead
of music or a computer program.
The disc was developed by the Blu-ray Disc
Association (BDA). a group of consumer electronics,
personal computer and media manufacturers.
The format was developed for recording, rewriting
and playback of high-definition video (HD), as well
as storing large amounts of data.
|
|
