If someone makes a video statement saying that they are going to give me x% of a award is that legally binding?
First of all, you claim to be posting about a matter in NY state.
In reality, you're posting from Jonesboro, AR.
Locations usually matter, mate.
However, in your example, what you've asked about MIGHT be a promise.
What it isn't is a contract.
If it isn't a contract, the person owes you nothing.
Why?
Contracts GENERALLY require two elements to be legally valid:
1 = All parties must be in agreement (after an offer has been made by one party and acknowledged by the other).
2 = Something of value must be exchanged -- such as cash, services, or goods (or a promise to exchange such an item) -- for something else of value.
Your example is simply a promise (at best).
Upon greater scrutiny, it might NOT even be a promise, just a spontaneous utterance.
Whatever it is, even if it is a promise, garden variety promises, are unenforceable at law.