mov, MP3, MPEG-PS, MPEG-2, MPEG-2 HD, MPEG-2 TS, H.264/MPEG-4 AVC, MPEG-4 SP, WAV, WMA, WMA Lossless, WMA Pro, WMA Voice, WMV, WMV HD asf, AVI DivX, DV AVI, AVI uncompressed, AVI Xvid, H.264 AVCHD, M-JPEG.
It even supports album art images stored in music folders. Here’s a list of what the app supports, straight from Microsoft: The Xbox One Media Player app supports a wide variety of audio and video codecs, container formats, and image file types.