FOURCC_NULL="\x00\x00\x00\x00" FOURCC_AC3 ="\x61\x63\x2d\x33" FOURCC_EAC3="\x65\x63\x2d\x33" FOURCC_AV01="\x61\x76\x30\x31" FOURCC_AV1C="\x61\x76\x31\x43" FOURCC_AVC1="\x61\x76\x63\x31" FOURCC_AVC3="\x61\x76\x63\x33" FOURCC_AVCC="\x61\x76\x63\x43" FOURCC_BLOC="\x62\x6C\x6F\x63" FOURCC_CENC="\x63\x65\x6e\x63" FOURCC_CO64="\x63\x6f\x36\x34" FOURCC_CTTS="\x63\x74\x74\x73" FOURCC_DINF="\x64\x69\x6e\x66" FOURCC_EDTS="\x65\x64\x74\x73" FOURCC_EMSG="\x65\x6d\x73\x67" FOURCC_ELST="\x65\x6c\x73\x74" FOURCC_ENCA="\x65\x6e\x63\x61" FOURCC_ENCV="\x65\x6e\x63\x76" FOURCC_ESDS="\x65\x73\x64\x73" FOURCC_FREE="\x66\x72\x65\x65" FOURCC_FRMA="\x66\x72\x6d\x61" FOURCC_FTYP="\x66\x74\x79\x70" FOURCC_HDLR="\x68\x64\x6c\x72" FOURCC_HINT="\x68\x69\x6e\x74" FOURCC_HVC1="\x68\x76\x63\x31" FOURCC_HVCC="\x68\x76\x63\x43" FOURCC_IODS="\x69\x6f\x64\x73" FOURCC_MDAT="\x6d\x64\x61\x74" FOURCC_MDHD="\x6d\x64\x68\x64" FOURCC_MDIA="\x6d\x64\x69\x61" FOURCC_MECO="\x6d\x65\x63\x6f" FOURCC_MEHD="\x6d\x65\x68\x64" FOURCC_META="\x6d\x65\x74\x61" FOURCC_MFHD="\x6d\x66\x68\x64" FOURCC_MFRA="\x6d\x66\x72\x61" FOURCC_MINF="\x6d\x69\x6e\x66" FOURCC_MOOF="\x6d\x6f\x6f\x66" FOURCC_MOOV="\x6d\x6f\x6f\x76" FOURCC_MP4A="\x6d\x70\x34\x61" FOURCC_MP4V="\x6d\x70\x34\x76" FOURCC_MVEX="\x6d\x76\x65\x78" FOURCC_MVHD="\x6d\x76\x68\x64" FOURCC_PASP="\x70\x61\x73\x70" FOURCC_PDIN="\x70\x64\x69\x6e" FOURCC_PRFT="\x70\x72\x66\x74" FOURCC_PSSH="\x70\x73\x73\x68" FOURCC_SAIO="\x73\x61\x69\x6f" FOURCC_SAIZ="\x73\x61\x69\x7a" FOURCC_SBGP="\x73\x62\x67\x70" FOURCC_SCHI="\x73\x63\x68\x69" FOURCC_SCHM="\x73\x63\x68\x6d" FOURCC_SDTP="\x73\x64\x74\x70" FOURCC_SEIG="\x73\x65\x69\x67" FOURCC_SENC="\x73\x65\x6e\x63" FOURCC_SGPD="\x73\x67\x70\x64" FOURCC_SIDX="\x73\x69\x64\x78" FOURCC_SINF="\x73\x69\x6e\x66" FOURCC_SKIP="\x73\x6b\x69\x70" FOURCC_SMHD="\x73\x6d\x68\x64" FOURCC_SOUN="\x73\x6f\x75\x6e" FOURCC_SSIX="\x73\x73\x69\x78" FOURCC_STBL="\x73\x74\x62\x6c" FOURCC_STCO="\x73\x74\x63\x6f" FOURCC_STSC="\x73\x74\x73\x63" FOURCC_STSD="\x73\x74\x73\x64" FOURCC_STSS="\x73\x74\x73\x73" FOURCC_STSZ="\x73\x74\x73\x7a" FOURCC_STTS="\x73\x74\x74\x73" FOURCC_STYP="\x73\x74\x79\x70" FOURCC_TENC="\x74\x65\x6e\x63" FOURCC_TFDT="\x74\x66\x64\x74" FOURCC_TFHD="\x74\x66\x68\x64" FOURCC_TKHD="\x74\x6b\x68\x64" FOURCC_TRAF="\x74\x72\x61\x66" FOURCC_TRAK="\x74\x72\x61\x6b" FOURCC_TREX="\x74\x72\x65\x78" FOURCC_TRUN="\x74\x72\x75\x6e" FOURCC_UDTA="\x75\x64\x74\x61" FOURCC_UUID="\x75\x75\x69\x64" FOURCC_VIDE="\x76\x69\x64\x65" FOURCC_VMHD="\x76\x6d\x68\x64" FOURCC_WIDE="\x77\x69\x64\x65"