How to do actually convert files?
This is not really a tutorial. It ends at "the command line will show a list of options and descriptions", but then doesn't tell me what to do to actually do something useful. I tried
java -cp server.jar net.minecraft.data.Main --input "/path/to/world/region/r.0.0.nbt" --output "/path/to/output/folder"
after renaming r.0.0.mca to r.0.0.nbt. The result is a folder called ".cache" with an empty "cache" file inside. Fabian42 (talk) 00:01, 29 February 2020 (UTC)
The link to the German wiki helped. I'm pretty sure now that just writing "--dev" before "--input" in my example command should work. But it doesn't. I created a bug report about it: bugs.mojang.com/browse/MC-173446 Fabian42 (talk) 16:00, 29 February 2020 (UTC)