Those constant zooms change the field size/image_width by the same proportion each frame. To find an unknown value you need to know the other 3. The equations are; For calculating the x and y move… equations

scripts by directory

You want to make objects with transparency you can add to something else. I don’t know if you are supposed to do it this way but seems like it might work. Photograph object on green… Green screen

iterating over the image can change the alpha then.

Change the co-ordinates of an overlay FROM its centre relative to canvas centre TO its top left corner relative to canvas top left corner (0,0)W= canvas widthH= canvas heightw= overlay widthh = overlay heightcx =… Centres

Palette slider. This makes a 16×16 pixel .PNG in directory “palettes” of the selected colour, varying in intensity, plus one transparent pixel. Is for use by ffmpeg to make single colour image. There’s nothing fancy… palette_slider