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Audio Playback/Conversion

Relink uses AudioKinetic's Wwise as its Audio Middleware for playback and file formats. It is generally a pain to deal with both for extraction and creation of new audio.

There are two distinct proprietary formats:

  • .bnk - These contain instructions on how to play audio, but does not necessarily contain audio by themsleves (except for _m banks). You can most of these in the data/sound folder of the game.
  • .pck - Contains actual sounds. You can not simply and play them. You will need to extract them first, and will specifically be located in the sound folder.

Requirements

  • Game files extracted beforehand.
  • foobar2000, Music player.
  • vgmstream, Get .fb2k-component file. This is a plugin for foobar2000.
  • Python 3, Required for Wwiser.
  • Wwiser, Used to process .bnk files.
  • QuickBms + wwise_pck_extractor.bms + BnkExtr, Used to extract .pck files and .bnk containing audio if you need it.
  • wwnames.txt (Right-click Save), Names for each Wwise 'event', to tell sound files apart. This file has been manually created after reverse-engineering.

Install foobar2000 + plugin, extract the rest in the same folder, make sure to place wwnames.txt next to Wwiser.

Playing Audio

You should make a copy of the data/sound folder away from the game for backup purposes & to centralize all sound assets, so create one and merge the extracted sound folder with it so that you have both .pck and .bnk files.

  1. Drag and drop one or more .pck files to extract_pck.bat. This should create a new folder with wem files inside.
  2. Open wwiser.pyz. Hit Load banks to load .bnk files (or Load dirs to load ALL .bnk in a folder). Load Init.bnk before any other banks. Wait until the files have loaded.
  3. Hit Generate TXTP. This will create a txtp folder with each file containing instruction on how to play every Wwise event.
  4. Drag the folder or individual txtp files to foobar2000.

Tip

You should mark .txtp files to always open with foobar2000.

Additional Information

All this wouldn't have been possible without bnnm's tools and time spent on audio reverse-engineering!

Wwise Information

  • Every character that speaks has an associated sound & lipsync file found in the sound/lipsync folder. These were used to reverse the Wwise event names.
  • For some reason, YellowTown = Folca, RedTown = Seedhollow.
  • Character emotes/motions and their linked files are defined in their <entity>_<id1>_<number>_seq_edit_se.xml file i.e np/np0300/np0300_3040_0_seq_edit_se.xml.
  • Audio playback through FSM happens using SoundTriggerAction, SoundOneVelAutoTriggerAction (and potentially more).
  • The .wem files contain a file name (except for certain packs), but aren't necessarily the event's.