MOTION PICTURE QUALITY
of common Multimedia-Systems
at different Network Speeds
VID@ - Video Internet Demonstration Aid
|VID@ is an HTML based user interface operating for standard Internet browsers like Microsoft Internet Explorer and Netscape Communicator. Digital video broadcasting and delivering is a growing market over the Internet and expanding possibilities through actual Technologies. VID@ offers you the ability to view different video sequences and comparethe picture quality of different Technologies. Audio is also provided for completion, but should not be judged in addition to the video because of unequal testing parameters.|
|To do special audiostreaming tests, refer to @IDA, the Audio Internet Demonstration Aid. A preselection of the original videosources was done by the European Broadcasting Union (EBU). In addition to comparing videostreams VID@ offers information on encoding, sources and developing. To simulate realistic conditions for todays desktop computers and networks, the producing of video content (encoding) was optimized for a special set of parameters. On the following pages you can compare the most popular video coding systems used with desktop computers.||
Supported Technologies are*:
*refer to the profiles-sheet for a parameter-overview
Whether or not you can achieve these data rates depends on the cable configuration, your Internet Service Provider (ISP), and the current network traffic. To play the desired video on your platform, a so called Multimedia Architecture is needed. Common Architectures are Real System (Real Video), Microsoft Windows Media (Net Show), and Apple Quicktime as shown below. Architectures are often misinterpreted as “fileformats," but they are more than just formats. Each Architecture is able to handle multiple fileformats for playout, import and export. They offer a variety of additional multimedial features such as image filtering, text tickers, teleprompters, slideshow, banner advertising, and much more.
The two most important aspects are:
To achieve transport of data intensive Media such as movies over a network
in realtime, you have to compress the content. This is the purpose of a compressor/decompressor
component, called "codec". Codecs handle the issue of making movies small enough,
playing properly, and being stored in a realistic amount of space. They include
the actual compression and decompression algorithms. A codec may be installed
as a part of the operation system, accessable by different video applications
or encapsulated in its own encoder application.
For example, Sorenson Video is a QuickTime web codec, Cinepak is a crossarchitecture
codec commonly used for CD-ROM projects and the Realsystem is mostly employed
for lifestreaming. QuickTime, RealG2, and the Windows Media architecture can
deliver files over a network via - either progressive download or by true time
There are three ways for Internet Broadcasting
Life streaming is not used by VID@. Allthough all files - except AVI - are prepared to be streamed over a network, the transfermode is decided by your network configuration, codec capabilities, and player installation. With VID@ you can now form a personal opinion about the quality of different multimedia systems. Before you start, you have to ensure that the players and additional codecs are installed on your System. To reach full operability you have to install all the following programs, but feel free to try first without any installation. Many systems such as Windows or MacOS already have default media players and integrated codecs. All install files purchased with VID@ are freely distributed by the authors
and designed for Windows 95, 98 and 2000.
I. Multimedia Architectures:
Click on a Icon for direct install from CD. If you want to check the current version, get linked to the provider by clicking on the products name. Please install carefully and be sure to finish all instal-lation dialogs (especially RealSystem). You may have to restart this page once more after installing and resetting the computer, especially with a codec. For detailed instructions on Codecs refer to section II.
Please install Macintosh versions manually by using the INSTALL directory.
Some systems want to connect to internet for registering or additional plug-in download. You can suppress many accesses by selecting your preferences carefully. See help section for detailed information. Please refer to the help-section "known-problems" if having trouble in playback. You can also access help out of the demonstrator, clicking on the questionmark.
II. Additional Codecs and Players
|This package contains the NetShow Encoder Application, Microsoft Codecs a VDO Wave Codec and various ASF Tools. It is no longer supported by Microsoft.|
MPEG2 Video Decoder provides MPEG-1 and MPEG-2 software decoding. It is
implemented as a Microsoft DirectShow filter.
Please unzip and start "register.bat", using the Explorer.
the Clipplayer to view Frauenhofer H.263 Video and MP3 Audio.
Note: The Frauenhofer Clipplayer may not work on all Systems.
You may use the Multiplayer instead.
|DivX (3.x) formerly was an illegaly ported and optimised Microsoft codec. The current version (5.x) is based on an ISO-MPEG4 implementation and distributed legally. It is installed as a Microsoft DirectShow filter.|
III. Multimedia related Documents
IV. External Studies
The following section provides links to external companies and institutes who studied the characteristics of different streaming technologies. You may read some papers, watch the producers samples, or evaluate other exhibiting rooms.
V. Codec Comparisons
VI. official test samples
Microsoft | Envivio | Phillips | Sorenson
VII. Streaming Linkdirectory
. Streaming Sites and Links
TODAY - and what about Internet video ?
TEST NOW - decide for yourself !
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