Using FFMPEG to create animated GIF from series of images and insert text for each image

Question

I am generating an animated gif from a series of png's labeled img_00.png, img_01.png, etc. I want to insert text to the top right corner of the animated gif for each frame that is generated from the png to display some specific information. For example say I have 3 pngs, img_00, img_01, and img_02...what I want from the gif is:

For frame generated from img_00, display "This is from img_00". For frame generated from img_01, display "This is from img_01". For frame generated from img_02, display "This is the last image generated from img_02!".

So far I have been messing around with drawtext option (assuming framerate=1):

ffmpeg -f image2 -framerate 1 -i img_%02d.png -filter_complex "drawtext=enable='between(t,0,1)':text='word1':fontsize=24:fontcolor=white:x=w-tw:y=0,drawtext=enable='between(t,1,2)':text='word2':fontsize=24:fontcolor=white:x=w-tw:y=0" out.gif

But I am getting "word1" and "word2" overlapped on top of each other. Is there a better way of doing this or someway to fix drawtext so the overlap doesn't happen?

Answer 1

between(t,0,1) and between(t,1,2) will overlap for t=1. Either the end time for the first range or the start time for the second range should be adjusted e.g. you can make the first range between(t,0,0.9).