@FinesseTopBins@benhancox3@mcfcIeo_ He is correct about the refresh rate. The purpose is to show different ads in different countries. This may be the answer tot he OP because the original footage may have been a certain refresh rate, but the replay might have been a different refresh rate.
@miti1924@A6788C Units. Usually a unit is percentage of your total betting balance that you are willing to stake on a bet. Quite often people use 1% as 1u. So if you had £1k, then 1u would be £10.
If you found a bet with a lot of value you might go 2 or 3u. If its lower value maybe only 1u.