Custom Campaign Background in Wc3patch 1.32+

[tulee]

Patch 1.32+ now requires custom campaign backgrounds to be .webm (moving backgrounds). I was wondering if there was a way to get campaigns made on previous patches (using MDX files for background) into 1.32+. Right now the best (still suboptimal) solution is to take the campaign thumbnail and use it as the background too, since BLB files can be converted to .webm (just not animated, which is fine).
But I was curious if anyone has a solution for getting the moving MDX files that many custom campaigns use as the background transferred across to 1.32+ custom campaigns.

 

[Luashine]

I am not knowledgeable on this, do you mean "moving MDX" are animated? In this case it boils down to extracting separate frames as images (like PNG or JPEG) and then reassembling this as animation into a silent video with ffmpeg. You would control the animation speed through video framerate.