This is one of the most famous video and audio formats. Developed by Microsoft Corporation, the Audio Video Interleave format was released in 1992. It is supported by virtually all video players. AVI plays the sound and video simultaneously and is suitable for any browser. The compression process involves a variety of codecs. This format is very popular among users. Audio Video Interleave files can also be opened using Windows Media Player.

opus

Opus (formerly Harmony): an audio codec for lossy compression

This format was created for online broadcasting. Opus is an audio codec for compression used on the Internet in real-time mode. Employed by programs such as Skype and Mozilla. Mostly used in interactive applications. The advantages of Opus are high audio quality and good compression. It works only on devices powered by Windows. Opus files can be converted to similar extensions.