What is a good length for a promo video?
宣传视频的长度以多少为宜？
The recommended length for a promotional video can vary depending on the platform, audience, and content of the video. In general, aim to create a promo video that is no longer than 2 minutes, taking into account the declining attention span and content overload of viewers.
宣传视频的建议长度因平台、受众和视频内容而异。一般来说，考虑到观众的注意力下降和内容过载，制作的宣传视频应不超过 2 分钟。