It is very important for my video marketing work so please answer if anyone knows this answer: What is the average min. length of videos for major video uploading sites (such as youtube, dailymotion, veoh, etc.) has to be in order to be approved for video being accepted?
Youtube it's only 10 minutes (20 with Dailymotion), unless you manage to become a partner Take a look at the sizes of your files also, maximum is 2 GB in size at both sites. Edit: wait minimal??! Don't think there is a minimal length, seeing all these less than 10 seconds trolls' videos in the last months...
Ten minutes in my opinion is the average lenth, and I also would say it is the perfect lenth also. The more videos one "unit" as, the more videos, pages, and link backs to your websites you develop.