What is the broadcast time of wildaid public service advertisement video?

According to the query of the wildlife public service advertising station, it is stipulated that the video playing time of wildlife public service advertising is 60 seconds. Too long frequency will occupy public resources and affect the advertising effect. The purpose of wildaid public service advertisement is to appeal to everyone to protect wild animals and resist illegal wildlife trade, so the video content should be short, eye-catching and impactful to achieve the publicity effect.