First off, that conveyor belt did stop....But that not what bothers me.
All I see here is a way to reuse spilled condiments....While cool, this video provided no other practical applications...I've been to an M&M packing plant, and I see no way that packing them horizontally would be beneficial.....They would just roll out.
And yes, I know M&Ms aren't a gel....Just saying I'm not sure how anything, gel or otherwise wouldn't spill out when full.