GT4 Replay manager, A plea from the OLR guys

[Small_Fryz]

does anybody know where one is, or can anybody make one.

Its extremly ridiculous how the system is atm.

 

[Werner Winkels]

does anybody know where one is, or can anybody make one.

Its extremly ridiculous how the system is atm.

I think Arwin is working on it

http://forums.gttimes.com/viewtopic.php?t=5171

 

[Small_Fryz]

Hm, that is a GT3 and GTC version, not sure if his doin a GT4 version

 

[CFM]

Yea, that thread's from 2003. No good for GT4.

 

[Tedehur]

I just stumbled across this thread and started to edit my replay files in a hexadecimal editor.
The beginning of the file is easy (and since I don't have my PS2 to do extra tests I can only do easy things right now) and I now know more or less where are useful information between addresses 0x00000000 and 0x000000AA.
Ok, that's only the first 171 bytes, but from the look of the file, I expect all information we need to be stored in the first kilobyte. (Knowing nothing of how GT3 replays were stored, I might be completely wrong, of course, that wouldn't be the first time).
I'll post any further info in this thread, and if you think you already have all information on what I'm busy looking for, just tell me

Edit 1: I just did addresses 0x000000AB to 0x00000254 now (almost 600 bytes). I wish I could know what's in the replay I'm reading and not do this blindly. I'm now afraid that these 255 first bytes only concern the Sharkport software and that the actual replay might only start at address 0x00000255.
I'll download a replay on GTP for which I'll know the final time. Perhaps that'll help to find it.

Edit 2: I compared 3 saves posted in WRS week 3 results, and that confirm some of what I suggest below but not all.
Adresses 0x00000070 to 0x00000073 in all 3 files were exactly the same, so they could represent the car and track (I would need replays at Autumn Ring without another car to make sure).


Here is what I have so far :
00000000 - 00000014 = file signature + "SharkPortSave"
00000015 - 00000018 = hex length of file title (L1) + filler
00000019 - 00000034 = file title on L1 bytes (L1=28 in this example)
00000035 - 00000038 = hex length of file description (L2) + filler
00000039 - 00000058 = file description on L2 bytes (L2 = 32 in this example)
00000059 - 0000005C = hex length of file notes (L3) + filler
- = file notes on L3 bytes (L3 = zero in this example)
0000005D - 0000005E = not identified but specific to replay
0000005F - 0000006E = GT4 game ID "BESCES-51719"
0000006F = 42 for ghost saves ; 52 for race saves
00000070 - 00000073 = not identified but specific to replay ------> this could be the car and track IDs
00000074 = fixed hex value "59"
00000075 = not identified but specific to replay
00000076 = fixed hex value "59"
00000077 - 000000A2 = always empty "00 00 ..."
000000A3 - 000000A6 = fixed value "06 00 00 00"
000000A7 - 000000AA = not identified but specific to replay +filler "00 00"
000000AB - 000000AC = not identified but specific to replay
000000AD = empty "00"
000000AE = 00 or 80, specific to replay
000000AF - 000000B3 = fixed value "84 27 00 00 00"
000000B4 - 000000B7 = not identified but specific to replay
000000B8 - 000000BB = (almost) fixed value "03" or "04" and "D5 07 00"
000000BC = not identified, could be linked to 000000B4 and 000000AE
000000BD - 000000BF = identical to 000000B5 - 000000B7
000000C0 - 000000C3 = identical to 000000B8 - 000000BB
000000C4 - 000000CB = fixed value "00 00 00 04 00 00 00 00"
000000CC - 000000CF = identical to 000000B4 - 000000B7
000000D0 - 000000D2 = identical to 000000C0 - 000000C2
000000D3 - 00000112 = name of the replay ? (not affected by SharkPort name changed by user)
00000113 - 00000147 = fixed value depending on 'ghost save' or 'race save'
00000148 = not identified but specific to replay
00000149 - 000001A0 = fixed value "thumbnail" + garbage
000001A1 - 000001A2 = not identified but specific to replay
000001A3 - 000001A4 = filler
000001A5 - 000001A6 = not identified but specific to replay
000001A7 - 000001AD = fixed value "00 00 84 97 00 00 00"
000001AE = not identified but specific to replay
000001AF - 000001B1 = identical to 000000B5 - 000000B7
000001B2 - 000001B5 = identical to 000000B8 - 000000BB
000001B6 - 000001B9 = identical to 000001AE - 000001B1
000001BA - 000001BD = identical to 000000B8 - 000000BB
000001BE - 000001C5 = fixed value "00 00 00 01 00 00 00 00"
000001C6 - 000001C9 = identical to 000001AE - 000001B1
000001CA - 000001CC = identical to 000000C0 - 000000C2
000001CD - 00000254 = fixed value + filler

 

[Tedehur]

Bold valued in the post above seem to be the most interesting parts of a replay's first 600kb since they are the only discrepancies when comparing 2 different replays.
Here are the corresponding values for each one of 3 replays from WRS week3 (replays posted by RSCosworth, NielsG, sjaak68).


Replay : RSCosworth --- NielsG --- sjaak68
Lap time : 1'21.506 --- 1'22.860 --- 1'23.059
075 : 55 --- 59 --- 59
148 : 52 --- 50 --- 50
1AE : 3A --- 05 --- 18
0AE : 00 --- 80 --- 80
0AB-0AC : FA 11 --- 09 05 --- 65 05
0A7-0A8 : FB 11 --- BC 0D --- 170B
1A5-1A6 : FC 11 --- BD 0D --- 180B
1A1-1A2 : FD 11 --- BE 0D --- 7C 0B
05D-05E : 62 82 --- 6E 71 --- 37 7D
070-073 : 33 4D 57 69 --- 33 4D 57 69 --- 33 4D 57 69 (all identical, which is the reason why I think it can represent both car and track)
0B4-0B7 : 0D 2A 02 1A --- 04 3B 05 1A --- 17 00 07 19 (this could be the lap time)


Don't know if this is gonna help, but at least I can lose my papers and there'll still be a track of it somewhere

 

[Tedehur]

Finally back home, I tested 2 replays for which I know what has been saved.
It seems to confirms what I was expecting : some of the first bytes represent the track used in the replay.
Actually they are bytes presents in the PS2 file name.
When you read on the X-port software : BESCES-51719BiMWiY4Y

BESCES- means PAL
51719 means Gran Turismo 4 PAL
B stands for 'B'est lap
iMWi seems to mean 'Deep Forest forward, arcade Mode
Y4Y : both 'Y' are always there, the '4' seems to be here so that 2 different files cannot have the same name (linked to timestamp or lap time) ?

If someone has replays can you check that the file name contains :

Best lap / Arcade Mode [B....]
3MWi = Autumn Ring (3)
SMWi = Cathedral Trail I (1)
iMWi = Deep Forest (2)
1tWi = El Capitan reverse (4)
zMWi = Fuji Speedway 90's (6)
ECSi = New York (3)
UMWi = Tsukuba (1)

Best lap / GT Mode [B....]
ZHSi = Citta di Aria reverse (1)
jHSi = Infineon (2)

Best lap / License [B....]
i5C5 = B3 (1)
zWC5 = B4 (1)
5nM5 = IB2 (1)
+Kn5 = IB6 (1)
i555 = IA3 (1)
iSY+ = IA16 (1)

Race replay [R....]
CjWi = Deep Forest (2)