In the Windows Media Playlist Editor, expand the playlist, and
then expand the smil element to show the elements in the
Click the element after which you want to add a media
Click the seq, switch, excl, or
priorityClass element inside which you want to add a
On the toolbar, click the Add element button.
The Add Media Elements dialog box
In Location of content, type the path to the
media element you want to include in the playlist.
The Content type examples area displays list
of valid content types.
If you want to put this element inside an existing seq,
switch, excl, or priorityClass element in the
list, select the Add as a child element check box.
To add the selected media element to the playlist, click
Add. When you are finished adding media elements to
the playlist, click OK.
The Windows Media Playlist Editor is only
available in the Windows Media Services snap-in.
Content streamed by Windows Media Services must
meet the minimum supported content length of the player to ensure
reliable playback. The minimum supported content length for Windows
Media Player 9 Series or later is 5 seconds. The minimum supported
content length for previous versions of Windows Media Player is 30
If your playlist includes JPEG image files, do
not include any syntax in your playlist that causes the image to
pause while being rendered by the player. Pausing a JPEG image in
this manner can cause the player to enter a permanent wait state.
If you must show a still image under these circumstances, create a
video file of that image and then use the video file in the
If your playlist includes JPEG image files and
you are using the playlist file with a broadcast publishing point,
be aware that users who connect to the broadcast while the JPEG
image is being streamed will not receive the image. They will
instead see a black screen. Once the playlist continues on to the
next item, playback will continue as expected. If you want a JPEG
image to be displayed for a certain period of time, you should use
the repeatCount attribute to repeat the image for short
durations that together equal the amount of time that the image is
to be displayed. That way, players that connect while the image is
being streamed can receive the image when it repeats. For example,
if a JPEG image is to be displayed for 60 seconds, you could set a
dur attribute value of five seconds and a repeatCount
attribute value of 12. If a user connects two seconds into the
broadcast, the image would be displayed after three seconds. If the
repeatCount and dur attribute values were not used,
the user would see a black screen for 58 seconds.