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Google Video

Streaming bandwidth and storage

Streaming media storage size (in the common file system measurements megabytes, gigabytes, terabytes, and so on) is calculated from streaming bandwidth and length of the media with the following formula (for a single user and file):
storage size (in megabytes) = length (in seconds) ? bit rate (in kbit/s) / 8,388.608 
(since 1 megabyte = 8 * 1,048,576 bits = 8,388.608 kilobits)

Real world example:One hour of video encoded at 300 kbit/s (this is a typical broadband video for 2005 and it's usually encoded in a 320?240 pixels window size) will be: (3,600 s ? 300 kbit/s) / 8,388.608 = 128.7 MiB of storage 
If the file is stored on a server for on-demand streaming and this stream is viewed by 1,000 people using a Unicast protocol, you would need
300 kbit/s ? 1,000 = 300,000 kbit/s = 300 Mbit/s of bandwidth
This is equivalent to 125.73 GiB per hour. Of course, using a Multicast protocol the server sends out only a single stream that is common to all users. Hence, such a stream would only use 300 kbit/s of bandwidth. See below for more information on these protocols.

From Wikipedia, the free encyclopedia

Google Video logoGoogle Video is a free video sharing and video search engine service from Google that allows anyone to upload video clips to Google's web servers as well as make their own media available free of charge; some videos are also offered for sale through the Google Video Store. Users can search and play these uploaded videos directly from the Google Video website, as well as download video files and remotely embed them on their web pages.

Uploaded videos were saved as a .gvi files under the "Google Videos" folder in "My Videos" and reports of the video(s) details are logged and stored in the user account. The report sorts and lists the number of times that each of the users videos have been viewed and downloaded within a specific time frame. These range from the previous day, week, month or the entire time that the videos have been there for. Totals are calculated and displayed and the information can be downloaded into a spreadsheet format or printed out.

Competing services include iFilm, Metacafe, Veoh, blip.tv and Outloud.tv. On October 9, 2006 Google agreed to buy former competitor YouTube for $1.65 billion in stock, but YouTube will remain a separate service under its own identity for the near future, though Google video searches include YouTube results as well.

Google announced on June 13, 2007 that the Google Video search results would begin to include videos discovered by their search crawlers on other hosting services, in addition to YouTube's and their own uploads. Search result links now open a frameset with a Google Video header at the top, and the original player page below it, similar to the way the Google Images search results are presented.

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