FF_QSCALE_TYPE_MPEG2 2070 libavcodec/mpeg12dec.c             ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG2);
FF_QSCALE_TYPE_MPEG2 2081 libavcodec/mpeg12dec.c                 ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG2);
FF_QSCALE_TYPE_MPEG2  381 libavfilter/internal.h     case FF_QSCALE_TYPE_MPEG2: return qscale >> 1;