A system identifies video data to be encoded as well as multiple display
regions associated with a particular video display type. Each of the
multiple display regions is associated with a different portion of an
image associated with the video data. The video data is encoded such that
the encoded video data includes information regarding the multiple
display regions. Each of the multiple display regions has an associated
display region identifier. Additionally, the system may identify an
active region of the video data. The active region may be located
anywhere within an image associated with the video data. The video data
is encoded such that the encoded video data includes information
regarding the active region.