Sets or Gets the end point of a sub-clip of a continuous media object.
the end point of a media object as an offset from the start time. The time must be specified as described in Time Formats.
If the CLIPEND attribute exceeds the duration of the media object, the value is ignored; and CLIPEND is set equal to the end of the media object.
For the CLIPEND attribute to work, the time2 behavior must be able to seek into the media. Some streaming formats do not support seeking. The canSeek property should indicate whether a media type supports seeking. Some formats, such as streaming media, do not report the correct information regarding their ability to seek.