Subject: [rtcweb] draft-ietf-rtcweb-video

From: Gaelle Martin-Cocher <[email-masked]>
Date: Wed, 3 Sep 2014 14:00:44 +0000

Dear all,

I am following up on the discussion and minutes related to the above draft:

ITU-T recommendation for accessibility can be found here:
http://www.itu.int/rec/T-REC-H.Sup1/en
A receiving device should support (at least) the recommended minimum values.
Applicable WebRTC services may follow such recommendations.

Video rotation:
As discussed there are two already defined methods to inform a receiving device to rotate the video:
- One is video format dependent (H264/H265 families) and is achieved by including an SEI message in the bit-stream
-The other is format independent (3GPP-CVO) and was previously proposed to the list: http://www.ietf.org/mail-archive/web/rtcweb/current/msg08977.html
The two bit granularity version of CVO should be enough.
To answer the question in the minutes, if CVO is not successfully negotiated, SEI (when and if applicable) could still be used.

Sincerely,
Gaëlle