According to their policy, Udemy requires at least 30 minutes of content and no more than 120 minutes for free content. However, not all of us have the ability to equipment to record videos. Therefore, we might have to either upload videos from Khan Academy or any other educational site that gives us the permission to do so and I am actually one of the ones who doesn't have the ability or equipment to record. On the other hand, those who do have the ability and equipment can record as much as they need to in order to account for the content that is a half hour or more.
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