Originally Posted by KerryIrons

Assuming the tire in the video is NOT yours, unless you can show us the cut we have no idea whether it can/should be repaired. Small cuts that don't cut through the casing can be fixed with super glue or shoe goo. Small casing cuts can be booted and as long as there is no significant bulge in the tire, can be ridden safely assuming the boot job is done properly. When it comes to sewing the cut with thread, then you are on your own. I'm currently riding on a booted tire with over 3,000 miles on it.