| Platform SDK: Broadcast Architecture |
The version of Broadcast Architecture shipped in Windows 98 did not use ATVEF enhancements. Instead, it used a format proprietary to Windows 98. These two formats are incompatible. It is recommended that your authoring tool author enhancements only for the new, ATVEF, standard.
If you must support both platforms, you will need to generate two different enhancements — one for each format — and broadcast both with the video.
When broadcasting both formats of enhancements, you should always broadcast the ATVEF announcement first. Otherwise, the ATVEF client may start to display the Windows 98 enhancement and then switch abruptly to the ATVEF enhancement when it becomes available. If the ATVEF announcement is broadcast first, ATVEF clients will only display the ATVEF enhancement.
Windows 98 clients ignore all ATVEF announcements and display only Windows 98 enhancements.