The problem was with the .obb file. After a lot of browsing and trials I found that actual reason for this Exception.
What I was doing:
- Create a zip file by clicking the folder with videos (Via Compress option when you right click on the folder in Ubuntu)
- Rename the .zip file to .obb
- Push this obb file to mnt/sdcard/Android/obb/package_name_folder
What I was supposed be do:
- Create the .obb file using the Jobb tool from Android tool (Android/tools/jobb)
- Repeat the step 3
- Done !
Creating .obb file : $ jobb -d /temp/assets/ -o my-app-assets.obb -k secret-key -pn com.my.app.package -pv 11
And finally, use ObbExpansionsManager to access the files