VLC Streamer uses VLC to handle the actual conversion of movies to the format for the iPhone/iPad.
We currently have two versions available.
The A version is based on the current VLC. It is best for most filetypes.
DotNet 4 is generally a lot more reliable than .DotNet 3.5
Unfortunately, the full version isn't very widely installed, so you may need to install a large download from Microsoft to use this version
The B version is based on an old version of VLC from just before version 2.00. It is somewhat better for mkv files.
The linux version is unsupported. It was provided by a generous community member. More info here.