VLC supports all audio and video formats supported by libavcodec and libavformat.
Although it has triggered some malware alerts, it doesn’t contain any malware, making it perfectly safe for download and installation. VLC Media Player is a legitimate piece of software that facilitates all the tools necessary for playing media content. VideoLAN is not a software, see 1.1 of this FAQ. VideoLAN Server is another product of VideoLAN, but is discontinued since a long time. What are the differences between VLC, VLC media player, VideoLAN Client, VideoLAN Server and VideoLAN? VLC is the official name of VideoLAN’s main product, often named VLC. What is the difference between VLC and VLC Media Player? VLC Media player does have DSS Encryption software, which is illegal to use for copyright protected content.
If software has non-infringing uses and is used for non-infringing purposes, it is legal to possess and use for that purpose.