AV_PICTURE_STRUCTURE_BOTTOM_FIELD  477 libavcodec/h264_parser.c                     s->picture_structure = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
AV_PICTURE_STRUCTURE_BOTTOM_FIELD  112 libavcodec/hevc_refs.c         frame->frame->interlaced_frame = (s->picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD) || (s->picture_struct == AV_PICTURE_STRUCTURE_BOTTOM_FIELD);
AV_PICTURE_STRUCTURE_BOTTOM_FIELD  106 libavcodec/hevc_sei.c             s->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;