Technology and Requirements
Webcasts require Microsoft's Media Player to be viewed:

•Windows Media Player 4.0 and higher for PC
•Media Player 6.3 and higher for Macintoshes OS 9
•Flip4Mac (Windows Media® Components for QuickTime) for Macintoshes OS X Tiger (v.10.3.9) and higher

Further information about system requirements and how to install Media Player can be found on Microsoft's Media website.

Formats and Availability
Webcasts are available to audiences based on copyright agreements signed by speakers:

• Everyone (no limitations mentioned) -- The world can view the webcast

• NASA -- Webcasts are limited to NASA facilities

• GSFC -- Webcasts are limited to Goddard Space Flight Center Facilities

Troubleshooting
Even though you have the latest version of Media Player, your system may still need to download the latest codec. This coder/decoder determines precisely what format the video is converted to when digitized. It also converts the digital signal to video on your computer. This component may need to be routinely upgraded - Media Player may attempt to install an updated codec automatically if you're connected to the web. The upgrade should take a few minutes, and you should see a note somewhere on the Media Player indicating that it is installing a new codec.

If you can hear audio, but not see video your connection may not be fast enough or consistant enough to view high speed, high resolution video. Please attempt to view a lower resolution version, if available.

If you continue to experience problems, please contact the webcast curator with a note explaining as much of the following as possible:

• which webcast(s) you cannot view

• how you arrived at that webcast (webpage you clicked the webcast link on)

• which version of Media Player you're using

• what operating system you're using

• where you are trying to view the video from (e.g. at home via modem or at work via LAN)

• a way to contact you

• a screenshot of the error message