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ehanson001
New Participant
December 13, 2020

APK/OBB Size Limitation

According to the Tech Note on expansion files, the total application size of a Quest application can be increased by building an APK file that loads OBB expansion files. However, this page indicates that the maximum supported size of APK and OBB expansion files is 4GB. Our application is currently about 20GB in size. How would the asset bundle OBB expansion file along with the main APK file approach allow for the total 20GB size, so that our application can be uploaded? Are there any workflow tutorials on this method? Unity 2019.1.5f1, Oculus SDK 1.49.0, thanks.

10 replies

Turisas
New Participant
November 28, 2022

Hello.

ehanson001, did you found solution for you problem? I've faced with exactly the same problem ( a lot 360 videos ). And I want include as many as possible videos at start and download rest after. But it's unclear how many obb files and size of obb I can use.

Looks like unity now may produce .obb files larger than 2 Gb ( https://forum.unity.com/threads/create-obb-with-video-bigger-than-2-gb-for-android-assetbundle.50331... ). Not tested yet.

And from Oculus/Meta documentation it's unclear how many .obb files may be included. Looks like if use Required Asset files so I may include several ( but what is the total size limit? )

user664062321553366
New Participant
June 6, 2023

Can I ask you how you split obb into 12?  Our application is currently about 6GB. I also wanted to Split obbs, but unity's "Split Application Binary" only split a mian.obb.

ehanson001Author
New Participant
December 20, 2022

Hi Turistas, not sure if there is a cap on how many OBBs for an app, but I do run 12 OBBs currently, but have not exceeded the 2GB limit, I think we had issues testing higher than that. There have been several issues w/ the Quest installer not finishing the install correctly but reporting a successful one, likely from a weak or intermittent wireless. I am not confident it has been fixed, as I still see an occasional user complaint (and associated negative review). Be careful w/ that, it's been a real problem, one that is beyond my control and very frustrating. HIH,

    user664062321553366
    New Participant
    June 6, 2023

    Sorry, I sent it back to someone else.

    Can I ask you how you split obb into 12?  Our application is currently about 6GB. I also wanted to Split obbs, but unity's "Split Application Binary" only split a mian.obb.

    ehanson001Author
    New Participant
    January 10, 2024

    Funny you should ask this, I am now asking Meta to inform how to attach multiple OBBs to an add-on DLC, seems to be only one possible from the docs. As for a std app, you can have many OBBs along with the apk upload syntax, expressing a folder vs file. I create these multiple OBBs through Unity, not splitting any per se.

    skyamirv
    New Participant
    January 10, 2024

    Oh yes, that would be the next challenge for me then! Lol Using Meta Developer Hub I've only seen the option for one OBB as well. Please let us know here if you find a way.

    Also very curious how you make multiple OBBs through Unity. The only option I've seen is you can click "split binary" and it gives you one APK and OBB. All the documentation and forums I've read say only on OBB can be created through Unity. If you can shed some light on this, I would really appreciate it as I've been searching everywhere and cannot find the answer.

    ehanson001Author
    New Participant
    January 13, 2024

    No worries all, back in 2019 it was a package mgr item called Asset Bundle Browser. It is now gone, so we went back to the source, but had to modify it quite a bit for 2022:

    https://github.com/Unity-Technologies/AssetBundles-Browser/tree/master

    Good luck!

    DSECurtis
    Inspiring
    January 13, 2024

    Thank you!

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