itsIfJ2kAudioSampleSize 1.3.6.1.4.1.2928.6.2.16.1.1.10.1.9

The number of bits used for the audio samples: default 20-bit audio or extended 24-bit audio. This value is applicable only for SD-SDI signal format (PAL/NTSC), and only on source interfaces. The value zero (0) indicates that it is not applicable.