rebuilding .OBB files? - Android Q&A, Help & Troubleshooting

I'm trying to change the Language on Half Life 2 for the Nvidia Shield.
So I put the VO folder from the PC version with all the .wav files into the .OBB file of the Android Version with Winrar.
It doesn't seem to work though, when I try to run it, the game attempts to redownload the .obb file ..
Is there anything I have to regard, like a signature of the .obb file or something?
Or do I need any special tools to build those files?

I have the same problem with Eternity Warriors 3. the game download the original obb file when the game detect that the obb is modded.

yea I'm guessing there is some kind of signature or even checksum check.

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Extracting Certain Files from APK's

hey all, i was just wondering if anyone knew how to extract some files from an apk?
specifically, i like riptide gp's background music and was wondering if anyone knew how to extract those music files from the apk or something. let me know! thanks!
I already tried opening the apk on both my computer and NT and couldn't find any music files anywhere... starting to think its not possible, but it can't be because in order for a game to have music its gotta have music files somewhere in the installation file just like any other game on any platform...
Just to get the most basic question out of the way, so sorry if I seem pedantic, but did you just change the extension of the .apk to .zip or did you use APKTool to unpack the .apk?
SG Pillar said:
Just to get the most basic question out of the way, so sorry if I seem pedantic, but did you just change the extension of the .apk to .zip or did you use APKTool to unpack the .apk?
Click to expand...
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i've already tried extracting the apk by conventional means, aka using winrar to extract the contents, but no luck in finding any files resembling that of a music file type. i've also tried apktool but after decompiling the apk, i couldn't find any music files either...
after decompiling through apktool i just saw a lot of .smali files. there was one files called base.apf but not sure how to decompile that....
Check out apktool to extract apks. I've used it on system files to open them up and edit what's inside.
https://code.google.com/p/android-apktool/

[Q] Language settings, JP audio w/EN subs and text, Final Fantasy IV

Hello all. I recently bought Final Fantasy IV and was disappointed to find there was no language setting in the game that I could find. Ideally, I would like to play with Japanese audio and English subtitles. Launching normally under USA locale plays English vocals and subtitles. I was afraid that the Play store variant would only come with English audio, but I found by changing my Nexus 7 language settings to Japanese, that it would in fact contain and play with JP audio and JP subtitles. I can't understand why , this being the case that there isn't an easy in application language switching option that I can see.
All the components are there. Does anyone know how I could somehow edit the files to play JP audio and English subs? Copy the JP audio track to the English version of the game seems the most straightforward , if I could figure a way to do it. Anyone have ideas for this process? Programs I will need to unpack the apk or game data and edit what needs to be etc...? Thanks.
To th ebest of my knowledge, it appears that I'll probably need to unpack the .obb file somehow. The .apk is small. Does anyone know of an suitable utilities to unpack and repack/sign if need be .obb an/o .apk firles?
I've seen a few posts on the forum suggesting that I simply rename the .obb to .zip, .rar etc... and it will simply be able to be extracted. Sadly, this doesn't seem to be the case. I've been attempting to use 7zip to extract the archive with a number of renamed file types and every time it claims that it doesn't seem to be a valid archive etc.... Others have suggested 7zip works for this in other cases, but I'm not sure why it is failing now. Do I need to use a specific program to see if it is a valid archive?
Edit: I also tried with WinRAR and to no effect - the same problem where it reports that there is no archive present etc...
At the moment I'm trying this with an edited/sideload ready version of FFIV 1.2.3 (which has both the .apk file of a few megabytes and the .obb of a few hundred megabytes), at least until I can pull the exact copy off my device. I'd really appreciate any insight. What do I need to open/extract the .obb and why is it not appearing with 7zip? Thanks.
I'm going to try and get another copy of the files from another source (pulled directly from my Nexus 7 or Nexus 4) onto my Windows PC etc...
RanceJustice said:
I've seen a few posts on the forum suggesting that I simply rename the .obb to .zip, .rar etc... and it will simply be able to be extracted. Sadly, this doesn't seem to be the case. I've been attempting to use 7zip to extract the archive with a number of renamed file types and every time it claims that it doesn't seem to be a valid archive etc.... Others have suggested 7zip works for this in other cases, but I'm not sure why it is failing now. Do I need to use a specific program to see if it is a valid archive?
Edit: I also tried with WinRAR and to no effect - the same problem where it reports that there is no archive present etc...
At the moment I'm trying this with an edited/sideload ready version of FFIV 1.2.3 (which has both the .apk file of a few megabytes and the .obb of a few hundred megabytes), at least until I can pull the exact copy off my device. I'd really appreciate any insight. What do I need to open/extract the .obb and why is it not appearing with 7zip? Thanks.
I'm going to try and get another copy of the files from another source (pulled directly from my Nexus 7 or Nexus 4) onto my Windows PC etc...
Click to expand...
Click to collapse
Huh... I'm not sure how to help you too. Just a simple beginner. But using .zip or .rar worked for me. Just that the file names were all long and weird. Also, every file appears as a .file extension
open obb file
Hi,
did you tried to open *.obb using "jobb" application from Android SDK?

[Q] Extracting certain files from .obb

Hello. Noobie here.
I really wanted to get the artworks from the game Deemo. It seems that they're not in the .apk file, so I tried the .obb file. I changed the extension to .zip, but when I opened it up, there wasn't any image files. All I see is the "file" extension name. I was just wondering if there are any ways to extract image files from an .obb file? Thanks in advance.

[Q] Extracting AUDIO from large applications?

Hello, the newly released Android game developed by Avenged Sevenfold, Hail to the King: Deathbat, has some cool soundtrack.
I'm trying to extract the audio from the game, so I can listen to it personally on my computer, or android device with all my other music.
I've searched around, found out how to extract from APK's, but that was it.
I coped the APK to my computer from /data/app, and opened it with WinRar. I searched around all folders, and couldn't find the audio files. I knew this would happen, because the store page said the game was 500MB.
I went into my device, and into /android/obb/gamefolder and /android/data/gamefolder. The data folder contained nothing and didn't have any big files. The obb folder had a .obb file that was 500mb. I copied that to my computer and opened it with WinRar. I found some .MP4's wthiout openeing any folders which were some cutscenes from the game. The only folder there was is the bin folder. Inside there was only a DATA folder. And then in that folder, just a bunch of ASSETS, RESS, SPLIT files, and just files with no extensions. I tried opening a couple, but couldn't with WinRar.
So, is it just impossible to find audio files in this certain game, or am I Doing something wrong?
thank you!

Extracted images from an android games .Obb file won't open

I extracted an .obb file from an android game and have access to all .mp3's (which open fine). I just can't get any images to open.
I used Apktool to extract the .obb from the .apk
Any help would be appreciated.

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