1. Go to https://somewes.com/frame-count/

2. Scroll down to Remote Video & paste our YouTube link

3. Go to the start of the run and click Set Start Frame

4. Go to the end of the run (Use , & . on the keyboard and fine tune) and click Set End Frame

5. On the right side under Results -> Video time is the run time

Thanks repuSoiraM for finding this

Hope this helps