It's probably DXVA improperly set. If you're using integrated graphics turn it off, if you're using an external GPU turn it on. It could also be an issue with reclock but try DXVA first.
thanksQuote:
Originally Posted by techmattr /t/1520249/messed-up-playback-in-xbmc/0_100#post_24441864
Set your XBMC audio to analog. If it plays back fine then your audio is not configured properly when using HDMI.