Upload a .txt file with lines in the format "451:00 - black", where "451:00" is the DDreamstudio beat time format, and "black" is the image name. choose the image type in the dropdown, and this tool will convert each line to "451.00=black.png=1.000=0=0=1=====".
It is written with Ddreamstudio's "beat time format" in mind, so it will subtract 1 from whatever timestamp you give it - this is because Ddreamstudio is always 1 beat forward compared to the game's own bgchange timing for beats.
DDream starts on beat 1, and Etterna starts on beat 0. Image example here
I would recommend using Zeta's background changes tool for any specific changes. This tool is just a converter. Check it out: Zeta's bgchanges tool
