I couldn't find a SMIL sample in the repository, but your example looks like it has an error. Sub clips use there two attributes clipBegin and clipEnd. They also don't have the 's' at the end, all values are assumed to be seconds. The other issue is the video url is relative, which means it may not work if your clips isn't stored in the same directory as your player. I'm also not sure if regions are supported yet.
The SMIL plugin can be loaded using the MediaFactory, for an example on how to use a plugin, see the MASTSample in the trunk/apps/plugins folder of the source tree. Optionally, if you don't need SMIL, you can create a subclip by specifying start and end times to the StreamingURLResource's constructor.
1 person found this helpful
The AkamaiPluginSample is the SMIL plugin sample
And yes, the SMIL plugin does support sub-clips.
Ryan and Charles, appreciate your response!