67a49be61f
This encoder advertises alignment=au as output format, which means each output frame should contain a full decodable access unit. The video encoder base class is not aware of our output alignment and will output spurious buffers with just the SPS/PPS inside when we call gst_video_encoder_set_headers(), which is broken because each buffer is supposed to contain a full decodable access unit in our case. Just don't tell the base class about our headers, they will be sent at the beginning of each IDR frame anyway. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2178>