numPreRollFrames
The number of pre-roll access units (AUs) transmitted as audio pre-roll data
ISO IEC 23003-3 (USAC):AudioPreRoll
(preroll count field) is (value) but (expected value) is recommended due to (reason) numPreRollFrames is (numPreRollFrames value) but <= 3 is required roll_distance is (roll_distance value) but <= 3 is required
(preroll count field)
(value)
(expected value)
(reason)
(numPreRollFrames value)
<= 3
roll_distance
(roll_distance value)