Android Split APK-OBB and StreamingAssets

Question

Hi Guys!

Here is my S.O.S. call:

I have an app that I made for a Tourism manager, so basically is a 360° Video Player which have 4 scenes:

– Splashscreen scene with my company name on it (this just last 5 seconds)

– A menu scene where you can pick a 2d or 3d scene

– the 2d scene

– the 3d scene (stereoscopic view)

So I’m using the EasyMovieTexture asset to put my 360 video on a sphere and everything runs perfect in the full apk (230mb) when I install it on the test phone (samsung s5). Off course my .mp4 file is in the StremingAssets folder and there´s no problem with the playback.

The BIG PROBLEM comes when I upload the app to the Google playstore. I just did it throught the regular way:

– Using the Split Application Binary

– Uploading the apk (17mb)

– Then uploading the obb (213mb) which name is changed automatically by the playstore to “main.x.x.x.obb”

Now, when the app is downloaded throught the playstore both files are downloaded (I can see the .obb file in the /Android/obb/com.x.x/ folder) but the thing is that it seems that the app is loading it from another location because there is no video playback. However the scene that contains the video is loaded. So, I think that there is an issue with the reading of the .mp4 file wich is in the streamingassets folder, but I can’t make the EasyMovieTexture to look at the OBB file.

Here is a script made by Jon Martin wich is trying to fix this issue by correcting the path where the MoviePlayerCtrl has to look for the movie file

 public string CorrectMoviePath(string filename) {
     if (Application.dataPath.Contains(".obb")) {
         filename = Application.persistentDataPath + "/" + filename
     } else {
         filename = Application.streamingAssetsPath + "/" + filename
     }
     return filename;
 }

So now my question is, Where do I have to put this to make this work. I now is in the MoviePLayerCtrl script but it is too large and by just put it in there doest fix the problem and when I try to add the movie file name into the script Unity shows an error saying that the value doesnt exist.

Any help would be awesome!

Thnks in advance!

Regards from Chile!

Answer 1

I think I've found the solution. Enter MediaPlayerCtrl.cs and go down into the first ANDROID block and change it to the following:

 if(m_bSupportRockchip)
 {
     Call_SetRockchip(m_bSupportRockchip);
     
     if(strName.Contains("://"))
     {
         Call_Load(strName,0);
     }
     else
     {
         //Call_Load(strName,0);
         StartCoroutine( CopyStreamingAssetVideoAndLoad(strName));
     }
 
 }
 else
 {
     //Call_Load(strName,0);
     StartCoroutine( CopyStreamingAssetVideoAndLoad(strName));
 }

More specifically, I commented out the Call_Load function in the else block and loaded the video using the CopyStreamAssetVideoAndLoad and everything is working dandy now.

Couple of things to note:

I suspect this happens because Call_Load tries to load something locally that doesn't exist and CopyStreamingAssetVideoAndLoad actually looks in the streaming assets folder in the OBB and copies it locally a folder the apk can access.
As of version 2.16 of EasyMovieTexture, there is a sample project (package) called in the Scene folder called "Demo_SplitOBB". If you extract the contents and look at the file "MedaiPlayerSampleGUIObb.cs" you will see the way to properly build the URI.

There goes half my day but a solution is a solution and I hope this saves everyone time!

Android Split APK-OBB and StreamingAssets

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