Losing background after seek in using compositor

Application Development
5

Glad if it helped, but unsure as this may just be the default value… see below

Just see:

gst-inspect-1.0 compositor
...
Pad Templates:
  SINK template: 'sink_%u'
  ...
  Type: GstCompositorPad
  Pad Properties:
  ...
    max-last-buffer-repeat: Repeat last buffer for time (in ns, -1=until EOS), behaviour on EOS is not affected
                            flags: readable, writable, changeable in NULL, READY, PAUSED or PLAYING state
                            Unsigned Integer64. Range: 0 - 18446744073709551615 Default: 18446744073709551615