The main argument against blocking ads on YouTube is that some content creators rely on ad revenues to support the creation of more content. When viewers block ads on YouTube, the creators don't get paid, which may result in less enjoyable content down the road. However, there is no law that says you absolutely have to sit through an unskippable three-minute pre-roll ad before every video you watch.
How To Make A Video Ads
PropellerAds is best for your app if you don’t have the audience size to get into one of the bigger video ad networks yet. It’s also great if you don’t have the resources to go through a long sign-up process or optimize ads right away. It may be less appealing if you do have a huge audience, however, as you won’t get the preferential treatment you may feel entitled to at your app’s size.