Publicis Groupe’s giant media agency MediaVest is “a comScore company” that uses the VCE platform to track the impact of digital video, says Christine Merrifield, President of Investment and Activation at MediaVest USA in this wide ranging interview about the value of digital video to brands

In addressing relative value of Nielsen versus comScore, she says that the Nielsen OCR product is based largely on Facebook – which is tied to the PC.

We spoke with her at the OMMA video summit where she was a speaker.