Video Streaming Information


Streaming Video on Your Website - Convert Visitors into Customers


Streaming video is a sequence of "moving images" that are sent in compressed form over the Internet and displayed by the viewer as they arrive. Streaming media is streaming video with sound. With streaming video or streaming media, a Web user does not have to wait to download a large file before seeing the video or hearing the sound. Instead, the media is sent in a continuous stream and is played as it arrives. The user needs a player, which is a special program that uncompresses and sends video data to the display and audio data to speakers. A player can be either an integral part of a browser or downloaded from the software maker's Web site.

Major streaming video and streaming media technologies include RealSystem G2 from RealNetwork, Microsoft Windows Media Technologies (including its NetShow Services and Theater Server), and VDO. Microsoft's approach uses the standard MPEG compression algorithm for video. The other approaches use proprietary algorithms. (The program that does the compression and decompression is sometimes called the codec.) Microsoft's technology offers streaming audio at up to 96 Kbps and streaming video at up to 8 Mbps (for the NetShow Theater Server). However, for most Web users, the streaming video will be limited to the data rates of the connection (for example, up to 128 Kbps with an ISDN connection). Microsoft's streaming media files are in its Advanced Streaming Format (ASF).

Streaming video is usually sent from prerecorded video files, but can be distributed as part of a live broadcast "feed." In a live broadcast, the video signal is converted into a compressed digital signal and transmitted from a special Web server that is able to do multicast, sending the same file to multiple users at the same time.

Streaming media is audio and video that are transmitted on the Internet in a streaming or continuous fashion, using data packets. The most effective reception of streaming media requires some form of broadband technology such as cable modem or DSL. A packet is the unit of data that is routed between an origin and a destination on the Internet or any other packet-switched network. When any file (e-mail message, HTML file, Graphics Interchange Format file, URL - Uniform Recourse Locater request, and so forth) is sent from one place to another on the Internet, the Transmission Control Protocol (TCP) layer of TCP/IP divides the file into "chunks" of an efficient size for routing. Each of these packets is separately numbered and includes the Internet address of the destination. The individual packets for a given file may travel different routes through the Internet. When they have all arrived, they are reassembled into the original file (by the TCP layer at the receiving end).

A packet-switching scheme is an efficient way to handle transmissions on a connectionless network such as the Internet. An alternative scheme, circuit-switched, is used for networks allocated for voice connections. In circuit-switching, lines in the network are shared among many users as with packet-switching, but each connection requires the dedication of a particular path for the duration of the connection. "Packet" and "datagram" are similar in meaning. A protocol similar to TCP, the User Datagram Protocol (UDP) uses the term datagram.

MPEG, the Moving Picture Experts Group, develops standards for digital video and digital audio compression. It operates under the auspices of the International Organization for Standardization (ISO). The MPEG standards are an evolving series, each designed for a different purpose. To use MPEG video files, you need a personal computer with sufficient processor speed, internal memory, and hard disk space to handle and play the typically large MPEG file (which has a file name suffix of .mpg). You also need an MPEG viewer or client software that plays MPEG files. (Note that .mp3 file suffixes indicate MP3 (MPEG-1 audio layer-3) files, not MPEG-3 standard files.) You can download shareware or commercial MPEG players from a number of sites on the Web.

The term codec is an acronym that stands for "compression/decompression." A codec is an algorithm, or specialized computer program, that reduces the number of bytes consumed by large files and programs. In order to minimize the amount of storage space required for a complicated file, such as a video, compression is used. Compression works by eliminating redundancies in data. Compression can be done for any kind of file, including text, programs, images, audio, video, and virtual reality (VR). Compression can reduce the size of a file by a factor of 100 or more in some cases. For example, a 15-megabyte video might be reduced to 150 kilobytes. The uncompressed file would be far too large to download from the Web in a reasonable length of time, but the compressed file could usually be downloaded in a few seconds. For viewing, a decompression algorithm, which "undoes" the compression, would have to be used.

There are numerous standard codec schemes. Some are used mainly to minimize file transfer time, and are employed on the Internet. Others are intended to maximize the data that can be stored in a given amount of disk space, or on a CD-ROM. Codec's are used in many popular Internet products, including QuickTime, Netmeeting, Cu-Seeme, and VDOphone.

Flash, is a popular authoring software developed by Macromedia, and is used to create vector graphics-based animation programs with full-screen navigation interfaces, graphic illustrations, and simple interactivity in an antialiased, resizable file format that is small enough to stream across a normal modem connection. The software is ubiquitous on the Web, both because of its speed (vector-based animations, which can adapt to different display sizes and resolutions, play as they download) and for the smooth way it renders graphics. Flash files, unlike animated but rasterized GIF and JPEG, are compact, efficient, and designed for optimized delivery. Known as a do-it-yourself animation package, Flash 4 gives Web designers the ability to import artwork using whatever bitmap or illustration tool they prefer, and to create animation and special effects, and add sound and interactivity. The content is then saved as file with a .SWF file name extension.

Web users with Intel Pentium or Power Macintosh processors can download Flash Player to view Flash content, which performs across multiple browsers and platforms. Flash is lauded for being one of the Web's most accessible plug-in. According to an independent study cited by Macromedia, over 90 percent of Web users already have Flash Player installed. Macromedia was recently acquired by Adobe in a 3.4 billion dollar deal.

About the Author: Ole Arndt is President of Global Media LLC, in Branchburg NJ.

Correspondence to: oarndt@streamingmediabiz.com


MORE RESOURCES:
This RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news


Gizmodo

This Video Streaming Breakthrough Could Lead to Smart Glasses ...
Gizmodo
One of the many inconveniences that doomed wearable products like Google Glass and Snap's Spectacles was the need to charge them every night. Streaming video and data requires a lot of power, and that takes a tremendous toll on a tiny battery. But ...

and more »


UW Today

Researchers achieve HD video streaming at 10000 times lower power
UW Today
Wearable cameras such as Snap Spectacles promise to share videos of live concerts or surgeries instantaneously with the world. But because these cameras must use smaller batteries to stay lightweight and functional, these devices can't perform high ...

and more »


Siliconrepublic.com

Snap will be dying to get its hands on this new HD streaming ...
Siliconrepublic.com
A new breakthrough could mean that battery-draining streaming of HD video will become a thing of the past.
Wireless camera streams HD video with way less power - FuturityFuturity: Research News

all 4 news articles »


Twitter's bet on video streaming starts to pay off
SFGate
Two years ago, even as its stock plummeted and takeover rumors swirled, Twitter was hatching a plan to become a force in live video. The San Francisco company's goal was to help users discover “what's happening now.” There were plenty of skeptics. Yet ...



Quartz

AT&T Has $15 Video Streaming Bundle Planned - Midland Reporter ...
Midland Reporter-Telegram
AT&T Has $15 Video Streaming Bundle Planned CEO Randall Stephenson revealed AT&T Watch on Thursday. 'Watch' will be a low-cost option to complement cable and promote mobile TV viewing. It will carry a small selection of channels, none of which include ...
AT&T will launch $15/month streaming service with cable channelsMashable
AT&T's cheap monthly streaming service is for cord-cutters who don't care about sportsYahoo Finance UK

all 27 news articles »


CNET

Cannabis Club TV streams marijuana videos to dispensaries
CNET
CCTV could be on the TV in your local dispensary. Cannabis Club TV. Walking into a pot dispensary could be an entirely new experience for you. But if you visit a place like Kannabis Works, located in Santa Ana, Calif., you're bound to lock in on a ...



Techaeris

University of Washington is working on battery-free HD video ...
Techaeris
The University of Washington is working on a project that would allow for battery-free HD video streaming to security cameras and wearables.
[H]ardOCP: Towards Battery-Free HD Video StreamingHardOCP

all 2 news articles »


SiliconANGLE (blog)

Researchers' low-power video streaming breakthrough could boost ...
SiliconANGLE (blog)
University of Washington researchers have developed a method of transmitting video using up to 10,000 times less power than existing techniques that could enable the development of much more capable connected devices. To demonstrate the breakthrough ...
New Technique for Low Power HD Video Streaming Could Lead to ...R & D Magazine

all 3 news articles »



Fin24

Twitter's bet on video streaming is starting to pay off
Fin24
San Francisco - Two years ago, even as its stock plummeted, and takeover rumours swirled, Twitter was hatching a plan to become a force in live video. The company's goal was to help users discover “what's happening now”. There were plenty of sceptics ...


Google News

home | site map
© 2007