AudioPreRoll usacExtElementDefaultLengthPresent is 1 but only 0 is allowed
ISO IEC 23003-3 (USAC):usacExtElementDefaultLengthPresent: "In order to use AudioPreRoll() for both random access and bitrate adaptation the following restrictions apply: [...] Setup of UsacExtElementConfig() for AudioPreRoll() [...] usacExtElementDefaultLengthPresent [...] 0"
ISO IEC 23003-3:
Fix the encoder in order to set usacExtElementDefaultLengthPresent value to 0 when used for AudioPreRoll, then reencode the content.