A codec compresses or decompresses media files such as songs or videos. Windows Media Player and other apps use codecs to play and create media files. A codec can consist of two parts: an encoder that compresses the media file (encoding) and a decoder that decompresses the file (decoding).

Supported video codecs. To maximize compatibility, SharePoint, OneDrive, Teams, Viva Engage, and Stream (on SharePoint) supports an extensive list of popular formats including the following video codecs: 012V. ADPCM_G722.

If you experience slow playback, a lag between audio and video, audio stuttering, and frames being lost, there are a few tips that may be able to help you to improve the audio and video playback and compatibility of any media you include in your presentation.

Troubleshooting audio and video playback. Most of the time, playback issues in Windows Media Player 9 are caused by one of the following problems: Corrupted media. Corrupted media can cause irregular playback such as missing audio or video, abrupt ending, or skipping. Damaged codecs.