NAL_SEI          7561 libavcodec/h264.c         case NAL_SEI:
NAL_SEI           157 libavcodec/h264_parser.c         case NAL_SEI:
NAL_SEI            70 libavcodec/libx264.c         if (skip_sei && nals[i].i_type == NAL_SEI) {
NAL_SEI            98 libavcodec/libx264.c         if (skip_sei && nals[i].i_type == NAL_SEI) {