Codec packs add additional codec support to Windows. Apps like Media Player will then be able to play media files encoded in these formats. The following codecs packs are available: Adds support for the MPEG-1 and MPEG-2 video formats. Adds support for the HEVC (H.265) video format. Adds support for the VP9 video format.

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:

While the file is playing, right-click the file in the library, and then select Properties. On the File tab, look at the Audio codec and Video codec sections. Use a non-Microsoft codec identification tool. To find one, search for "codec identification tool" on the web. You'll find several tools as well as useful related info.

Damaged codecs. Codecs are software programs that compress and uncompress audio or video data. Damaged codecs can cause problems such as missing audio or video, unusually fast or slow playback, or distortion in the video (such as lines).

If your presentation contains a video or sound file from an earlier version of PowerPoint, you can upgrade your file format to take advantage of improved multimedia playback capabilities. Upgrading will automatically update and embed media items. To upgrade a file format in PowerPoint, on the File tab, select Info, and then Convert Document.