A year ago, VLC on iOS was forced to remove its support for AC3 codec. I found almost all my videos on iPad were muted.
Since then, I haven't bothered to check other options. I don't mind paying a few dollars but I've been using VLC since years on all of my computers and mobile phones. There's simply no other comparable alternatives that works equally well on Windows, Linux, OS X as well as iOS.
Today, I opened VLC on my iPhone again and noticed that I can play my videos with sound again! I checked the official website for sure and got this:
The link on iTunes also confirmed this. However, nowhere did I find details how did the developers solved the patent issue. Let's hope it's fixed for good.