FF8/FileFormat FMT - Revision history

BukTop: 8 revisions imported

2019-05-23T02:24:52Z

8 revisions imported

my_wiki>BukTop: 6 revisions imported

2018-04-04T09:36:49Z

6 revisions imported

my_wiki>Albeoris: Created page with "Final Fantasy 8's sound effects are stored within two files. The '''audio.dat''' contains the actual wav files, compressed as 4-bit ADPCM. The '''audio.fmt''' file is a locato..."

2018-03-24T00:11:13Z

Created page with "Final Fantasy 8's sound effects are stored within two files. The '''audio.dat''' contains the actual wav files, compressed as 4-bit ADPCM. The '''audio.fmt''' file is a locato..."

my_wiki>Shard at 20:39, 3 June 2014

2014-06-03T20:39:15Z

my_wiki>Shard: derp, this is hex

2014-06-03T20:38:33Z

derp, this is hex

my_wiki>Shard: forgot about the rest of the header

2014-06-03T19:22:35Z

forgot about the rest of the header

my_wiki>Shard: /* FMT File Structure */

2014-06-03T19:01:05Z

‎FMT File Structure

my_wiki>Shard at 19:00, 3 June 2014

2014-06-03T19:00:32Z

my_wiki>Shard: Created page with "Final Fantasy 8's sound effects are stored within two files. The '''audio.dat''' contains the actual wav files, compressed as 4-bit ADPCM. The '''audio.fmt''' file is a locato..."

2014-06-03T19:00:10Z

Created page with "Final Fantasy 8's sound effects are stored within two files. The '''audio.dat''' contains the actual wav files, compressed as 4-bit ADPCM. The '''audio.fmt''' file is a locato..."

New page

Final Fantasy 8's sound effects are stored within two files. The '''audio.dat''' contains the actual wav files, compressed as 4-bit ADPCM. The '''audio.fmt''' file is a locator for sounds in the dat.

==FMT File Structure==
The FMT is headed by 2 bytes representing the number of sound file headers in the rest of the FMT file.

Each sound header either contains 70 bytes if it represents a valid sound file, or 38 bytes if it's a blank entry (those 38 bytes are all 0x0)

Each sound header contains the following structure:

{| border="1" cellspacing="1" cellpadding="3" align="center" style="border: 1px solid black; border-collapse: collapse;"
! style="background:rgb(204,204,204)" | Offset
! style="background:rgb(204,204,204)" | Size
! style="background:rgb(204,204,204)" | Data
|-
| 0x0000
| 4 bytes
| Size of wav file in the dat.
|-
| 0x0004
| 4 bytes
| Offset of wav file in the dat.
|-
| 0x0008
| 12 bytes
| Unknown. If first byte is 0, the other 11 are always 0. Probably some kind of looping metadata.
|-
| 0x0020
| 18 bytes
| Microsoft WAVFORMATEX header for the wav file.
|-
| 0x0038
| 2 bytes
| Samples per block
|-
| 0x0040
| 2 bytes
| Number of ADPCM coefficients (used for compression, should always be 7).
|-
| 0x0042
| 28 bytes (7 pairs of two 2-byte coefficients)
| Standard Microsoft ADPCMCoefSets.
|-
|}

@@ Line 2: / Line 2: @@
 ==FMT File Structure==
-The FMT is headed by 2 bytes representing the number of sound file headers in the rest of the FMT file.
+The FMT is headed by 4 bytes representing the number of sound file headers in the rest of the FMT file, then by a 32 byte header that isn't interesting.
-Each sound header either contains 70 bytes if it represents a valid sound file, or 38 bytes if it's a blank entry (those 38 bytes are all 0x0)
+Each sound header (beginning with the first at 0x40) either contains 70 bytes if it represents a valid sound file, or 38 bytes if it's a blank entry (those 38 bytes are all 0x0)
 Each sound header representing a valid sound file contains the following structure:

← Older revision	Revision as of 02:24, 23 May 2019
(No difference)

← Older revision	Revision as of 09:36, 4 April 2018
(No difference)

@@ Line 8: / Line 8: @@
 Each sound header representing a valid sound file contains the following structure:
-{| border="1" cellspacing="1" cellpadding="3" align="center" style="border: 1px solid black; border-collapse: collapse;"
+{| class="wikitable"
-! style="background:rgb(204,204,204)" | Offset
+! Offset
-! style="background:rgb(204,204,204)" | Size
+! Size
-! style="background:rgb(204,204,204)" | Data
+! Data
 |-
 | 0x00

@@ Line 33: / Line 33: @@
 | Samples per block
 |-
-| 0x22
+| 0x28
 | 2 bytes
 | Number of ADPCM coefficients (used for compression, should always be 7).
 |-
-| 0x24
+| 0x2A
 | 28 bytes
 | Standard Microsoft ADPCMCoefSets.
 |-
 |}

@@ Line 2: / Line 2: @@
 ==FMT File Structure==
-The FMT is headed by 4 bytes representing the number of sound file headers in the rest of the FMT file, then by a 32 byte header that isn't interesting.
+The FMT is headed by 4 bytes representing the number of sound file headers in the rest of the FMT file, then by a 36 byte header that isn't interesting.
-Each sound header (beginning with the first at 0x40) either contains 70 bytes if it represents a valid sound file, or 38 bytes if it's a blank entry (those 38 bytes are all 0x0)
+Each sound header (beginning with the first at 0x28) either contains 70 bytes if it represents a valid sound file, or 38 bytes if it's a blank entry (those 38 bytes are all 0x0)
 Each sound header representing a valid sound file contains the following structure:
@@ Line 13: / Line 13: @@
 ! style="background:rgb(204,204,204)" | Data
 |-
-| 0x0000
+| 0x00
 | 4 bytes
 | Size of wav file in the dat.
 |-
-| 0x0004
+| 0x04
 | 4 bytes
 | Offset of wav file in the dat.
 |-
-| 0x0008
+| 0x08
 | 12 bytes
 | Unknown. If first byte is 0, the other 11 are always 0. Probably some kind of looping metadata.
 |-
-| 0x0020
+| 0x14
 | 18 bytes
 | Microsoft WAVFORMATEX header for the wav file.
 |-
-| 0x0038
+| 0x26
 | 2 bytes
 | Samples per block
 |-
-| 0x0040
+| 0x22
 | 2 bytes
 | Number of ADPCM coefficients (used for compression, should always be 7).
 |-
-| 0x0042
+| 0x24
 | 28 bytes
 | Standard Microsoft ADPCMCoefSets.
 |-
 |}