Parallel playlist (par)
The SMIL parallel playlist is a list of media objects that start playback simultaneously.
Illustration of using the parallel playlist for multi-zone effects are located in the section on Layout.
Children of the parallel playlist can be specified to start at a specific "wallclock" time defined by the player's real-time clock. See section on Wallclock for details.
Slide Show with Background Music
<par> <seq repeatCount="indefinite"> <img src="pic1.jpg" dur="5s" /> <img src="pic2.jpg" dur="5s" /> <img src="pic3.jpg" dur="5s" /> </seq> <audio src="music.mp3" repeatCount="indefinite" /> </par>
The parallel schedule has two children: a sequential playlist containing 3 still images, and a single audio media object. The sequential playlist and the audio object start simultaneously, achieving the effect of a slide show of 3 photos while music plays in the background.
An extensive application using parallel time containers:
- Prefetch seamlessly
- SMIL Screen Layout: multi-zone, multi-layer layout
- SMIL Wallclock Scheduling: ISO-8601 date/time, repeats