This script is nothing new. However, I feel that traders do not know the full potential it can provide if they just increase the lookback periods.
Tradingview's default Vol Osc uses a fast setting of 5 and a slow setting of 10. It just paints pointless scribbling. Slow all your indicators down and wake up to a whole new world of Technical Analysis.
To create consistency with variables I typically use Fib numbers for lookback periods. (3,5,8,13,21,34,55,89,144,233,377,610,987)
As noted in chart. An increase in volume can be either bullish or bearish. It's up to you to decide which way price action will move. If you use with other indicators you can create more confirmations.
More confirmations = peace of mind
My favorite indicators are (Detrended Price Oscillator, Momentum, MACD, Chaikin Money Flow, Ultimate Oscillator, and this Volume Oscillator)
Here is just one example of MACD strategy indicator that can be used with this Vol Oscillator