MPEG Audio: compare duration with Olympus voice recorder metadata

[JeromeMartinez]

Example:

Format                                   : MPEG Audio
File size                                : 8.23 KiB
Duration                                 : 287 ms
Overall bit rate mode                    : Constant
Overall bit rate                         : 192 kb/s
Writing hardware                         : Olympus 811_
Conformance errors                       : 1
 MPEG-Audio                              : Yes
  Duration                               : Duration is less than expected duration (actual 00:00:00.287 3%, expected 00:00:10, conf, offset 0x20F0)