1*77c1e3ccSAndroid Build Coastguard Worker# IVF Signature + version (bytes 0-5) 2*77c1e3ccSAndroid Build Coastguard Workerkw1="DKIF\x00\x00" 3*77c1e3ccSAndroid Build Coastguard Worker 4*77c1e3ccSAndroid Build Coastguard Worker# AV1 codec fourCC (bytes 8-11) 5*77c1e3ccSAndroid Build Coastguard Workerkw2="AV01" 6