A method of three hundred and sixty degree) (360°) streaming implemented by a client device. The method includes receiving, by the client device, a media presentation description (MPD) file from a content server, the MPD file describing a media content, the media content comprising a plurality of viewpoints each corresponding to one of a plurality of 360° video camera sets; transmitting, by the client device, a request for a part of the media content based on the MPD file that was received; receiving, by the client device, the part of the media content that was requested; rendering, by the client device, a viewport using the part of the media content that was received, the viewport belonging to one viewpoint from the plurality of viewpoints; and generating, by the client device, a metric containing a viewpoint identifier, the viewpoint identifier identifying the viewpoint that the viewport that was rendered belongs to.