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。

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That one word can turn into a full-length video in her head.

这个词在她脑子里可以变成一段完整的视频。

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Try various formats and styles, test length, test if there is no video at all, do you still get the same results?

尝试不同的格式和题材，测试一下长度，看看有没有这方面的视频，你能得到同样的结果吗？

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When you are planning a YouTube video, your first concern should not be length of the video.

FORBES: How long should an Internet video be? -media training

The erstwhile superstar has returned to the spotlight with a full-length music video diss (see below) that features a man in a devil mask chasing a mock Jay-Z around the woods, Blair Witch-style.

FORBES: MC Hammer's Devilish Business With Jay-Z

Therefore, when we launched Vimeo, there were a number of strict rules we placed around the upload process (size and length of video), which were intended primarily to prevent people from uploading copyrighted material to the site.

FORBES: Why Did YouTube Succeed Where Vimeo Failed?