Description of the issue

AudioPreRoll usacExtElementConfigLength is 1 but only 0 is allowed


ISO IEC 23003-3 (USAC):
usacExtElementConfigLength: "In order to use AudioPreRoll() for both random access and bitrate adaptation the following restrictions apply: [...] Setup of UsacExtElementConfig() for AudioPreRoll() [...] usacExtElementConfigLength [...] 0"

Possible solution/action

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



QC.EBU.IO Test Items

Audio Coding Syntax