Reception of digital multimedia data signals from multiple sources in a
stream over a fixed bandwidth communications path may be accomplished by
subscribing to a base layer of a first source and a base layer of a second
source, and subscribing to an enhancement layer of the first source. Data
signals corresponding to the subscribed layers of the first and second
sources may be received in a stream over the fixed bandwidth
communications path, output signals may be produced which correspond to
the received data signals for the first source, and output signals may be
produced corresponding to the received data signals for the second source.
The output signals for the first source may be displayed in a first
portion or window of a display, and output signals for the second source
may be simultaneously displayed in a second portion or window of the
display, thereby providing a picture-in-picture (PIP) display for
streaming digital video.