










<!--








            Copyright: Copyright 1998-2001 W3C (MIT, INRIA, Keio), All Rights Reserved.
See http://www.w3.org/Consortium/Legal/.
Author: Aaron Cohen (Intel), Jeff Boston (IBM)








           Version: May 1, 2001








            Module: Timing and Synchronization








           Feature: Interval logic and pruning








         File Name: interval_logic_pruning.smil








  Media Components: 1 QT, 2 JPG








 Expected Behavior: at 5s video1 and video2 appear.








                          at 10s frown begins, 5s into its duration.








                        the smile image ends as the par2 begins and so is not shown.








                          at 15s frown, video1 and video2 all end and








disappear.








-->








<smil xmlns="http://www.w3.org/2001/SMIL20/Language">








<body>








        <par>








                <par id="par1" begin="10s" dur="10s">








                        <par id="par2" begin="-5s" dur="10s">








                                <img id="smile" begin="0s" dur="5s"








src="../images/smile.jpg"/>








                                <img id="frown" begin="0s" dur="10s"








src="../images/frown.jpg"/>








                        </par>








                </par>








                <video id="video1" begin="smile.begin" dur="10s"








src="../videos/nasa.qt"/>








                <video id="video2" begin="frown.begin" dur="10s"








src="../videos/nasa.qt"/>








        </par>








</body>








</smil>