Synology is fantastic thing, but sometimes if you add video it will have DTS audio track and DS Video/Synology can not play it.
Because licence problem Synology do not have DTS support from factory but there is way how to install DTS codec anyway.
Download DTS package
You can download DTS package from this Mega: https://mega.nz/#F!wzgl3arK!CdpnCIk5UyqguePDNPaisw
For right file you can consult this article :
Install DTS package
- Open your DSM
- Package center -> Settings -> Trust Level -> Tick Any Publisher
- Package center -> Manual install -> Select downloaded package -> Finish install
- Refresh page
- Now it is possible to run DTS with no proble
Have a nice day 🙂