Introduction

The service ew-manip is a stateless manifest/playlist manipulator for DASH and HLS. In the following, we use the term manifest to denote either a DASH manifest or an HLS playlist.

ew-manip is meant to be integrated with the nginx front of ew-repackager (ESB3002) and can change DASH and HLS manifests depending on query parameters in the URL.

The manipulations are triggered by a special query ewm=1 which must be at the start of the query string, and will then do different manipulations depending on options in the rest of the query.

The two modifications implemented this far are insertion of pre-roll assets in VoD manifests and change of HLS target duration for “live-like” HLS manifests coming from a live channel.