I am currently trying to extract bnk files from the demo for Ninjala known as Ninjala Exclusive Ninja Club, that's on the Nintendo Switch running UE4 4.24. I try the traditional method of extracting the bnk files, putting all the wem extracted files into one area, and using ww2ogg.exe and revorb.exe to output into a ogg file. Unfortunately, I have this error be the output for all of the wem files:
Parse error: RIFF truncated
Here is also what the header looks like for most of the wem files extracted:
If anyone wants the bnk files to test with, here is a sample of one of the files here:
Chara_Create.bnk
If there is any further information needed, let me know.
Going from this rip, it looks like this demo doesn't use Vorbis anyway (it uses Opus and "Platinum" ADPCM), so ww2ogg won't be of much use. You should be able to decode/play the files in the rip with vgmstream.
edited 9:15 PM EDT May 3, 2020
Thank you for responding. The other wem files within the directory seem to be independent of this bnk archive. However, there are some other bnk files of interest, mainly init.bnk. Though when extracting it, there's nothing that's outputted, being of around 1 kb. Should be in that rip provided by yourself.