It’s based on your watch time and the video quality. For example, If you have a 480p video that’s 10MB, and you want to watch it entirely, about 10MB will be used for each view. By unblocking Ads, The traffic from the Ads will be also counted. Since version 1.2.0, you can reduce the traffic usage by setting playback speed and playback quality.
Full guide: Dalga IPs: saving bandwidth on docs.dalga.dev