In the libvpx-VP8 implementation, we can tell the encoder to not reference, force update, or don't update last, altr, or gold frames by using the flags defined in vp8cx.h.The VP9 decoder supports 8 reference slots, but I don't see an API in libvpx-VP9 to control which slot to update to / reference from. Is there some way for the application to configure these slots, or are the slots internal to the encoder?
Thanks,Yang