For those who know Adobe Flash / Animate, when you export an animation, it can automatically create a packed tilesheet with a xml coordinates file such as
frames.xml
<frames>
<frame x="0" y="0" w="256" h="512">
<frame x="256" y="0" w="256" h="512">
....
How can I export a packed isometric spritesheet such as the one below in blender?