I found the video but it is volume in general -
Volume and Open Interest
This module is about Volume and Open Interest. When we're trading we look at the price action but we also look at the volume of trading and the open interest which is something we come across in futures and options.
Not sure what is not to be understood. In MT4, volume represents tick volume https://docs.mql4.com/predefined/volume .
IMO pretty useless. The only useful thing i can think of to use tick volume is to measure the difference between brokers, because it shows the tick volume only from broker, not the market as whole (impossible, decentralized market).
In MT5 it also represents tick volumes for forex. It can show traded volume on other non-forex assets.
The only useful thing i can think of to use tick volume is to measure the difference between brokers
You can also identify the hottest instruments.
Who wants to trade a dead instrument that is barely ticking at all ?
The factors involved are quite large.
But i also agree it could be used to analyze data between brokers.
A tick in spot ForEx is just a single price change.
When you think in terms of matching a buyer with a seller, transactions, contracts, etc. — that's related to futures.
Supposedly you can trade futures with MT, but I haven't tried that.
This is the best use for tick volume I have seen thus far. I will give this further consideration. Thanks for the tip.