SRC template: 'vidsrc'
    Availability: Always
    Capabilities:
      video/x-raw(memory:DroidVideoMetaData)
                 format: { YV12 }
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]