VP9_NUM_REF_FRAMES  209 libavcodec/cbs_vp9.h     VP9ReferenceFrameState ref[VP9_NUM_REF_FRAMES];
VP9_NUM_REF_FRAMES  362 libavcodec/cbs_vp9_syntax_template.c     for (i = 0; i < VP9_NUM_REF_FRAMES; i++) {