RE: draft submission to IETF for carriage of live TTML in RTP

Hi Nigel,

Thanks for calling attention to this.

A bit EBU-TT centric.

Regarding:  “The media types registry should be updated to make reference to this  document for the application/ttml+xml media type.” And to your comment below: “adopted as a first class media type in SMPTE 2110”.

Can someone elaborate on this thinking and/or what the perceived problem is?  W3C is an IANA-approved registration org for media types, hence its definition in TTML. There is no need for an RFC (except of course to document RTP carriage).  And, what does “first class” mean?  There are no classes of media types that are registered through RFC’s or approved orgs like W3C.

Regards,
               Mike

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Sent: Friday, January 18, 2019 2:02 AM
To: Timed Text Working Group <public-tt@w3.org>
Subject: draft submission to IETF for carriage of live TTML in RTP

All,

this may be of interest: https://datatracker.ietf.org/doc/draft-sandford-payload-rtp-ttml/


This is a draft specification for carriage of live TTML over RTP, intended in the fullness of time to be something that can be adopted as a first class media type in SMPTE 2110.

It has just been submitted by a colleague of mine at BBC R&D and no doubt needs some improvements, but worth reviewing now.

kind regards,

Nigel





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