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Help on Rhythm Heaven Megamix's unplayable sound files by JacintaB19 at 9:45 AM EST on November 10, 2020

In a folder I downloaded, I noticed that there are .AAC (MPEG-2 AAC), .BCGROUP, and .BCSTM files, as well as .BCSAR, .BCWAV and .CDC files. They also couldn't be played in foobar 2000.

How can I make these music files playable?

edited 9:49 AM EST November 10, 2020

by JacintaB19 at 10:23 AM EST on November 13, 2020

Any help on how to make all the .AAC (MPEG-2 AAC), .BCGROUP, and .BCSTM files playable will be of use. Please, anyone?

edited 10:23 AM EST November 13, 2020

by almendaz at 10:46 PM EST on November 17, 2020

Hello.
Using any hex editor, you will FIRSTLY make sure that the data in those files really contains those formats (as filename extension is meaningless from the data extraction standpoint).
ACC is an audio format, but it needs a container (i.e. mp4, m4a, ogg, mkv, etc) in order to make this file "playable" in audio players.
This and the other formats could be make playable with VGMstream and txtp/txth files, with the adequate parameters.

by JacintaB19 at 7:33 AM EST on November 18, 2020

I just downloaded an hex editor. Now what can i do first to make the files work with the right parameters? Any help?

edited 7:38 AM EST November 18, 2020

by almendaz at 4:38 AM EST on November 19, 2020

Figuring the sound parameters is the hard part of all this effort. You can take a look at VGMPF wiki pages for knowledge base.

by JacintaB19 at 5:48 PM EST on November 27, 2020

The files that i'm trying to make playable are GROUP_WSD_TUTORIAL_AGB_KARATE.bgroup and GROUP_WSD_TUTORIAL_AGB_PACHI_PACHI.bgroup.

Any help for making these playable in foobar2000 with the right parameters.

Even on the VGMPF wiki, i can't find any help or knowledge on this game's sound formats.

edited 5:52 PM EST November 27, 2020

by almendaz at 2:38 AM EST on November 28, 2020

Hello.
Please do not forget to upload the samples-files so that anyone can take a look and help you.

I see VGMPF is more focused on chip sound formats than streamed, so their wikis could not help you with your task.

edited 2:39 AM EST November 28, 2020

by JacintaB19 at 2:48 AM EST on November 28, 2020

Here is the Link.

edited 2:49 AM EST November 28, 2020

by almendaz at 1:20 AM EST on November 29, 2020

Data struct: ( "string", [dword], {arrayofbytes} ; LE-byteorder)

"CGRP"
{ 0x3C bytes }
"INFO"
{ another 0x3C bytes } //different both sample files
"FILE"
[ 0xE0 ]
{ 0x18 "0x0" bytes }
"CWSD"
{ 0x1C bytes of <useful> parameters, unknow purpose / insufficient with provided files }
"INFO"
[0x20] [0x100] [0x10] [0x101] [0x14] [0x0] [0x0]
"CWAR"
{ 0x3C bytes }
"INFO"
[0x20] { 0x18 bytes }
"FILE"
[0x20] { 0x18 bytes }
"INFX"
{ 0x18 bytes } //different both sample files


My appreciation is that those files are NOT data files, just "header" files for some "body"/container, with parameters in them. So they cannot be playable.
But I might be mistaken (I do not know other sample .bcgrp files).


EDIT: re-reading your posts, if those two are your only .BCGRP files, then my stated appreciation is a sure bet - it's a common occurrence for contained streams.

edited 1:25 AM EST November 29, 2020

by JacintaB19 at 12:31 AM EST on December 2, 2020

Is there a way to make the unused files playable, as these are never used in-game.

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