Video for Prezi / Create Flash Video (FLV)

  1. Open a Terminal/Command Prompt window
  2. Change to the directory with your source video
  3. Use the following command:

ffmpeg -i INVIDEO.MP4 -vcodec flv -vf -b 6000k -an -y OUTVIDEO.FLV

You must leave the outpt format as FLV, this is the best format to upload to Prezi. The INVIDEO.MP4 can be any format, any extention (eg INVIDEO.MOV, INVIDEO.AVI, INVIDEO.MPG). You can increase or decrease the - b 6000k number if you want to improve quality or decrease size. You can combine this with cropping by adding the cropping flag, read more here.