QuickTime, Version 6,
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Click here to read special information for DSL users
or those behind a network firewall.
Outstanding Professor - Paul Dixon
Video is displayed in QuickTime Player.
Viewing Our Video Streams
Clicking on a video link downloads a small QuickTime Link (.qtl) file (approx. 4K) to your computer to access the video. Internet Explorer usually downloads and runs the file, automatically playing the video. Firefox, and other browsers, may bring up a dialog box asking you what to do with the file. Some Safari users may have disabled the default preference "Open safe files after downloading" so that the file doesn't play automatically. Those users must find the downloaded " .qtl" file, usually located on the Desktop, and double-click on it to view the video. Accepting the default "Open with ... QuickTime.qtl (default)" will download the file and start playing the video. After viewing the video, you may delete the QuickTime Link file. Note: Since that file is a reference to the video, similar to a ".ram" file for RealPlayer, double-clicking on the link file will access the video without having to use a Web browser.
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About Data Rates
Data rate refers to the speed of the data stream between the server and your computer. It is expressed in bits per second or bps. Video streams are optimized for specific data rates to allow for various types of Internet connectivity.
Special software is used for encoding and compressing the video for streaming at a specified data rate. The data rate for broadband access is generally 256 Kbps and above. The data rate for dial-up modem is 42 Kbps.
DSL and cable modems usually have download data rates in excess of 300 Kbps, they can range as high as 768 Kbps to 1 Mbps, but that rate can drop to 300 Kbps due to various factors. For that reason, we provide a video stream for the 300-350 Kbps range.
Modem data rates are determined not only by the speed of the modem but also by the connection speed provided by the Internet Service Provider (ISP). A modem may be rated at 56 Kbps but the connection speed may only be 28.8 Kbps. The following URL is for a Web site that provides information that may help you to obtain the highest connection speed possible with your modem and ISP: http://www.56k.com/
Special Info About DSL Access and Network Firewalls
Some DSL configurations, some home network installations, or network firewalls may block the standard method used for accessing the video streams. If you have Quicktime version "6.3" or newer, you shouldn't have do anything for it will automatically configure the transport settings for the appropriate communications protocol for your situation. Older versions of QuickTime will require you to manually configure the transport settings. The following information will help you to determine if you need to change the transport settings and how to do so.
Go here to test your computer system's ability to access a video stream. That stream is optimized for low speed modem access but will serve as an access test for any connection speed.
If the video doesn't start playing after 8-10 seconds, you may have to configure QuickTime for HTTP access to the video stream. Please follow these instructions to enable HTTP access:
If you have QuickTime version "6.3" or newer, you can also manually configure the transport settings.
For a MS Windows computer, access "QuickTime Settings" (as described above) and check to see if "Automatically determine the best protocol and port ID." (the default setting) is selected. If not, enable that configuration and try to play the test video. Manually configuring the transport settings is the same as with previous versions of QuickTime.
For MacOS X computer, perform the following steps:
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Last update of this page : May 24, 2006
URL : http://media.csusb.edu/video/ga2006.html