The straight answer to this question is No. I know, you are now thinking what happened to the Xbox One update in late 2014 in which Microsoft promised that support for MKV file format will be added? The answer is yes, Microsoft has indeed released any update to make Xbox One compatible to MKV. Don’t worry, you read it all right here, and since you are scratching your head, let me put all things together.
Before proceeding further, it’s important to understand MKV files. MKV stands for Matroska Video, which is a open source, open standard Multimedia container. The word container itself gives you some idea of what it is. MKV file is just a container of video, audio, and subtitles. MKV file end with extension .mkv.
Think of it like a Zip file, which has some files in it like video, audio, and documents. So, when Microsoft said Xbox One supports MKV, it just means that Xbox One is now able to open MKV container, just like you need you are able to open zip file on your PC, but Video and Audio file formats in the container need to be compatible with Xbox One, otherwise you will have problems playing it. Some common problems are no audio, but video working fine or vice-versa.
Just incase if you are curious to know what happens on PC, they are usually played by using VLC player, because Windows Media Player doesn’t support it as of now.
So what are the Video and Audio Formats Xbox One support?
Now that you know not all MKV’s are 100% playable without errors on Xbox One, it’s important to understand what and all the video and audio formats can Xbox One read.
Xbox One Media App Compatible Video and Audio formats:
3GP audio, 3GP video, 3GP2, AAC, ADTS, AVI DivX, DV AVI, AVI uncompressed, AVI Xvid, H.264 AVCHD, M-JPEG, .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, and WMV HD. (Updated as of 25th May 2015)
Note that Microsoft is constantly updating Xbox One with software updates and in the process may add increased support of various audio and video file formats. If you think something is missed here when you read this, let us know and we will update the list.