If anyone here still use Avanti (ffmpeg GUI), how to make a square video ?

[reko]

I realize that Avanti is an old app and no more updated.
I just want to use it as the 2nd option after Handbrake because in Avanti I have the option to brighten and sharpen the video.

My situation is like this:
The video source is mp4 1920x1080.
When I shoot the video, I always keep in mind that I am going to make the encoded video as 720x720...
so the things which are happening I always keep in the center of the rectangular grid helper on the camera.

I use the crop-pad-scale option in Avanti like this :


[Attachment 61419 - Click to enlarge]

With that kind of setting, I am able to get just the "middle" section of the video in a size 720x720.
I thought the setting is something that the encoder did not encode 600 px from the left-right and 180 px from top-bottom from the video source, just encode the middle 720x720 portion.
But when I play the video in MPC-HC, it show a black bar on the left and right :

[Attachment 61420 - Click to enlarge]

The media info say that the video is 720*720 (16:9).

On the other hand, with Handbrake (I do the crop setting also in Handbrake),
MPC-HC doesn't show the left/right black bar :

[Attachment 61422 - Click to enlarge]
And the media info say the video is 720*720 (1.000).

So my question is :
how do I make the encoded video is a "real" 720x720 size in Avanti, just like the Handbrake encoded video?

Any kind of help would be greatly appreciated.
Thank you in advanced.

[Alwyn]

What does that "Source" dropdown menu say (the one just below) to the 720x720 = 1:1?

It might be a display aspect ratio setting.