Distinguishing between LIVE and VOD

Do you have access to Server-side - meaning can you add server-side code to get this info. If yes you can write function which returns Stream.length. Now from client you just need to make two calls to this function - so if length is same then its VOD but if length is increased then its DVR.

Now if you don't have access to Server-side - there is another not so good way to do it - you can just note down what duration you receive at first metadata and then after sometime of play do seek - and check duration again in metadata - if its increased you know its DVR