The average video length on YouTube is about 1.5 minutes while the average session time on YouTube is about 30 minutes.
YouTube上视频的平均长度是1.5分钟，YouTube网站用户的平均访问时间是大概30分钟。
If you choose to make a video, length should not exceed 2 minutes total.
如果你选择制作一个视频，总长度在2分钟以内。
If you choose to make a video, length should not exceed 2 minutes total.
如果你选择制作一个视频，总长度在2分钟以内。
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