https://webrtc.googlesource.com/src/webrtc/+/9e17f56429ec340e347fc232708d6484f59fadac/modules/media_file/media_file_utility.h
modules/media_file/media_file_utility.h - src/webrtc - Git at Google
modules mediafileutilityhsrc
https://www.dlink.com/hr/hr/support/faq/antennas-cables-and-accessories/accessories/dmc-series/what-do-the-lights-indicate-on-the-media-converter-modules
What do the lights indicate on the media converter modules? | D-Link
on mediaconverter moduleslightsindicate