有女孩的摄像头直播视频应该有多长？

视频的长度是多少？

The length of a YouTube video depends on a number of factors, such as the platform, the audience, and the way that the content is presented. For example, it's best to keep Facebook videos short - the maximum is 10 seconds and the average is 7 - with the important information frontloaded in the first couple of seconds. On Twitter, videos up to 2 minutes and 20 seconds (140 - the old limit allowed in a Tweet!) work well. If they are well-presented and hold the audience's interest, longer videos can be very effective. It is best to test and see what works for you.