I just got the new iphones 6, and sadly when all my apps resynced my second most used on VLC was gone and after pleny of searching i got it back.
To re-add VLC follow the steps below.
1. Install the software it will allow you to install .ipa onto your device http://www.itools.cn/itoolsyingwenbanxiazai
(you can also backup your old copy of vlc from another device to put it on a different device)
2. If you haven't got a backup you can generate yourself here is mine from my ipad http://misc.pcjamesy.net/files/VLC(v2.3.0).ipa
3. Open the software installed above.
![Image](http://i.imgur.com/rJM1cJm.png)
4. Click the applications button on the right side allowing time for it to download the list from your device.
![Image](http://i.imgur.com/y9fSvr8.png)
5. Select install on the top bar and select your .ipa back up or the one downloaded above.
![Image](http://i.imgur.com/EDYUFDy.png)
6. Installing takes about 30 seconds and enjoy.
![Image](http://misc.pcjamesy.net/files/vlcapp.png)
![Image](http://i.imgur.com/8gdFV6z.png)