This is a FLOSS hardware dongle + software combo to:
The merging of video with synced audio is done with the accompanying software before importing into your video editor. Yes, other well established solutions exist but this one is cheaper (45$ for each synced device VS 150$ ) and simpler on many aspects.
This is a cheap hardware/software combo to aid in automatically syncing audio and video you’re shooting. The post-production software can sync multicam too. It will appeal to videographers who have encountered some limitations of their editing software “waveform analysis syncing” and should also interest scientists who need to timestamp data recordings within sub-millisecond precision.