AV_PICTURE_STRUCTURE_UNKNOWN   69 libavcodec/av1_parser.c     ctx->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN;
AV_PICTURE_STRUCTURE_UNKNOWN  262 libavcodec/h264_parser.c     s->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN;
AV_PICTURE_STRUCTURE_UNKNOWN  540 libavcodec/h264_parser.c                     p->last_picture_structure != AV_PICTURE_STRUCTURE_UNKNOWN &&
AV_PICTURE_STRUCTURE_UNKNOWN  195 libavcodec/hevc_parser.c     s->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN;
AV_PICTURE_STRUCTURE_UNKNOWN  140 libavcodec/hevc_sei.c         h->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;