I have an image of the height 1200px. I want to create a video from this single image.

My final video will be height 450px.

At 0seconds I want to show a 2xZoomed version of the image. Then it in 2 seconds it should zoom out to it’s original width. And then it start scrolling to the bottom and then at the end it starts scrolling back. This should be on loop until the end of the video.

Also I am want the this whole image to be faded to 50% since I will overlay another video on top of it.

I am trying to use the zoompan filter but it seems to be not working. Especially I tried using t variable in it to change zoom based on duration but it doesn’t accept.