Problem with the black bars in video

Hi, I don't know why the recorded videos 720 x 480 with ffdshow Video Codec have top and bottom black bars, which is very unpleasant.

I use CyberLink Power Director and Movavi Video Editor and 2 they have them. It comes for AVI video files.

I tried with different codecs, you still have them. I want the processed clips to write them down with ffdshow Video Codec with the encoder MJPEJ.

I'm sure of the settings and options of the ffdshow Video Decoder can be set so that you are gone, but I don't know exactly how to do it.

Can anyone help me?

Thank You!