Batman: Arkham City *.usm

[Hulk]

Hi everyone,

I've been searching through many forums and websites, but I haven't been able to find any reliable tools for extracting subtitles from .usm files.

So far, I’ve had some success using VGMToolbox, which can extract the audio and video streams correctly, but unfortunately, it doesn’t  subtitle extraction.

Here’s an example of a .usm file I’ve analyzed:

[CRIUSF_DIR_STREAM_1]
filename = 0_CW_Intro.usm
filesize = 55610208
datasize = 0
stmid = 0
chno = -1
minchk = 1
minbuf = 254720
avbps = 9347269

[CRIUSF_DIR_STREAM_2]
filename = MovieFrame00000.bmp
filesize = 35095340
datasize = 0
stmid = 1079199318
chno = 0
minchk = 3
minbuf = 155522
avbps = 5959254

[CRIUSF_DIR_STREAM_3]
filename = :0_CW_Intro_ME.L.wav
filesize = 7627374
datasize = 0
stmid = 1079199297
chno = 0
minchk = 1
minbuf = 27860
avbps = 1296060

[CRIUSF_DIR_STREAM_4]
filename = :0_CW_Intro_Eng.L.wav
filesize = 7627374
datasize = 0
stmid = 1079199297
chno = 1
minchk = 1
minbuf = 27860
avbps = 1296060

[CRIUSF_DIR_STREAM_5]
filename = 0_CW_Intro_Fra.LR.wav
filesize = 1168218
datasize = 0
stmid = 1079199297
chno = 2
minchk = 1
minbuf = 27860
avbps = 198506

[CRIUSF_DIR_STREAM_6]
filename = 0_CW_Intro_Ita.LR.wav
filesize = 1168218
datasize = 0
stmid = 1079199297
chno = 3
minchk = 1
minbuf = 27860
avbps = 198506

[CRIUSF_DIR_STREAM_7]
filename = 0_CW_Intro_Ger.LR.wav
filesize = 1168218
datasize = 0
stmid = 1079199297
chno = 4
minchk = 1
minbuf = 27860
avbps = 198506

[CRIUSF_DIR_STREAM_8]
filename = 0_CW_Intro_Spa.LR.wav
filesize = 1168218
datasize = 0
stmid = 1079199297
chno = 5
minchk = 1
minbuf = 27860
avbps = 198506

[CRIUSF_DIR_STREAM_9]
filename = :Subtitle_Eng.txt
filesize = 6249
datasize = 0
stmid = 1079198292
chno = 0
minchk = 1
minbuf = 116
avbps = 1871

[CRIUSF_DIR_STREAM_10]
filename = 
filesize = 0
datasize = 0
stmid = 1078154565
chno = 0
minchk = 0
minbuf = 0
avbps = 0

As you can see, there’s clearly a subtitle stream embedded, but I haven’t found a way to extract or edit it.

Has anyone here managed to extract or modify subtitles from .usm files, especially for games like Batman: Arkham City GOTY? I would really appreciate any advice or tools you could recommend.