pub unsafe extern "C" fn gst_video_encoder_finish_subframe(
encoder: *mut GstVideoEncoder,
frame: *mut GstVideoCodecFrame,
) -> GstFlowReturn
pub unsafe extern "C" fn gst_video_encoder_finish_subframe(
encoder: *mut GstVideoEncoder,
frame: *mut GstVideoCodecFrame,
) -> GstFlowReturn