Converting Video to MP4

I converted a MOV video to an mp4 format. It is only 20 MB and has the mp4 extension, but Prezi will still not accept it. Is there anything else I can do to upload the video?

Hi @Yoav_Wachsman, do you mean that you are trying to insert an MP4 video into Prezi Next?
Please note that only MP4 videos with AAC audio codec are supported.
You can find further information about this here.