I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at <http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>. This review is in response to a request for early Gen-ART review. Document: draft-ietf-rtcweb-video-05 Reviewer: Russ Housley Review Date: 2015-05-15 IETF LC End Date: 2015-04-28 IESG Telechat date: unknown Summary: Almost Ready Major Concerns: Downref: There is a normative reference to Informational RFC 6386. There is no mention of the downref in the IETF Last Call, and RFC 6386 is not listed in the downref registry. (https://trac.tools.ietf.org/group/iesg/trac/wiki/DownrefRegistry). Minor Concerns: In section 3, the first sentence says: "This section provides guidance on pre- or post-processing of video streams." s/pre- or/pre- and/ Maybe the intended audience will understand "Y'CbCr 4:2:0", but a reference would have helped me. I found useful information at http://en.wikipedia.org/wiki/Chroma_subsampling. The indented text in Section 5 should begin with "NOTE: ". In section 6, I assume that "320x240" is measured in pixels. Please make the text clear. Section 6.2 says: "Unless otherwise signaled, implementations that use H.264 MUST encode and decode pixels with a implied 1:1 (square) aspect ratio." Isn't this true for VP8 as well? Other Comments: There are references to several outdated I-Ds. Some of the references point to particular section numbers. I did not check whether the updates had an impact on these sections, but someone should do so: - draft-ietf-payload-vp8-11: -15 exists - draft-ietf-rtcweb-overview-12: -13 exists - draft-ietf-rtcweb-rtp-usage-06: -23 exists - draft-ietf-rtcweb-security-arch-09: -11) exists - draft-ietf-rtcweb-security-06: -08 exists