All four images should hang around onscreen until the end of the audio
1.5
Media object
elements (ref, animation, audio, img, text, textstream, video) "All of these
media elements are semantically identical. When playing back a media object,
the player must not derive the exact type of the media object from the name
of the media object element."
(smil,
source)
(xhtml+smil,
source)
Two images in parallel for 7 seconds. The bitrate parameter is specific to
RealPlayer.
----- alternative for Oratrix -----
Two texts on a red background.
The first text is displayed in the default text color, the second is displayed
in blue.
1.8
Type attribute
"This value takes precedence over other possible sources of the media type
(for instance, the "Content-type" field in an HTTP or RTSP exchange, or the
file extension)"
(smil,
source)
(xhtml+smil,
source)
Two images should play side-by-side, even off a properly configured web server
where the "html" extension is marked as "text/html" MIME type.