Samsung has joined existing shareholders Rogers and Arris for a series B round that increased the video adtech company's overall funding to $13m.

US-based advertising technology developer Watchwith has received $8m in series B capital from media company Rogers Communications, consumer electronics producer Samsung and telecoms technology manufacturer Arris, TechCrunch reported on Friday.

Rogers invested through Rogers Venture Partners, the corporate venturing unit that led Watchwith’s $5m series A round in 2013. Arris and music and video database operator Gracenote also participated in that round.

Watchwith’s technology analyses the content of videos and inserts overlay adverts over part of the screen at…