My AMV is just too short/long.

The experiences of the last years have shown that the attention span of the viewers is about 3 minutes on average. Therefore, we don’t recommend that videos are nearly 5 minutes long. Especially highly edited videos are usually a lot shorter than even just 3 minutes, since the work you have to put into those projects is often a lot for just one person. We recommend that you find a good mix in length and content for your AMV from the beginning.