{ ATOM_gnre, MP4_ReadBox_Metadata, MP4_FreeBox_Common, ATOM_ilst },
{ ATOM_rtng, MP4_ReadBox_Metadata, MP4_FreeBox_Common, ATOM_ilst },
{ ATOM_trkn, MP4_ReadBox_Metadata, MP4_FreeBox_Common, ATOM_ilst },
+ { ATOM_xid_, MP4_ReadBox_Metadata, MP4_FreeBox_Common, ATOM_ilst },
/* udta */
{ ATOM_0xa9ART, MP4_ReadBox_0xa9xxx, MP4_FreeBox_0xa9xxx, ATOM_udta },
#define ATOM_cnID VLC_FOURCC( 'c', 'n', 'I', 'D' )
#define ATOM_covr VLC_FOURCC( 'c', 'o', 'v', 'r' )
#define ATOM_rtng VLC_FOURCC( 'r', 't', 'n', 'g' )
+#define ATOM_xid_ VLC_FOURCC( 'x', 'i', 'd', ' ' )
#define ATOM_chap VLC_FOURCC( 'c', 'h', 'a', 'p' )
#define ATOM_SDLN VLC_FOURCC( 'S', 'D', 'L', 'N' )
{ ATOM_0xa9xpd, N_("Executive Producer") },
{ ATOM_aART, N_("Album Artist") },
{ ATOM_vndr, N_("Vendor") },
+ { ATOM_xid_, N_("Catalog Number") },
{ 0, "" },
};