Stefan, you are awesome. Nailed it!! I hope this shows up in searches for other people. The default location (for me) was:
This PC > Videos > iCamSource Motion Events >
In the above folder you should see a folder with a string of random characters as a subfolder name, the ".webm" files are in there. The ".webm" file extension also explains why I couldn't find the files doing a search for any file recently modified, because I was filtering for video files but didn't include that extension in my search.
Thank you Stefan!!!