BS_4x4            209 libavcodec/vp9_mc_template.c             av_assert2(b->bs == BS_4x4);
BS_4x4             65 libavcodec/vp9mvs.c         [BS_4x4]   = { {  0, -1 }, { -1,  0 }, { -1, -1 }, {  0, -2 },