ExternalSeekGenerator and DVR Written by on 15 Apr 2013. Posted in Support Forum › Category: Integration and Customization › ExternalSeekGenerator and DVR 0 Vote Up Vote Down flavioribeiro asked 9 years ago Hey, Just saw externalSeekGenerator field on addStorage call. What it means? I’m trying to do DVR in HLS live streams but I’m still searching for the best way to do it. Thanks.