Currently there is a live webcast from the opening ceremony of COP15.This feed can be found here.

COP15 Webcast

For the duration of the conference, all official meetings and press conferences will be available live and on-demand in original languages and in English translation. Shortly after the close of each meeting, on-demand files will be available. Also, a selection of side events will be available on-demand in original languages. COP15 Webcast