Description of the issue

AudioPreRoll usacExtElementDefaultLengthPresent is 1 but only 0 is allowed

References

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"

Possible solution/action

ISO IEC 23003-3:
Fix the encoder in order to set usacExtElementDefaultLengthPresent value to 0 when used for AudioPreRoll, then reencode the content.

Severity

Error

QC.EBU.IO Test Items

Audio Coding Syntax