Re: [AVTCORE] Benjamin Kaduk's No Objection on draft-ietf-payload-rtp-ttml-03: (with COMMENT)

[Benjamin Kaduk <[e-mail]>]

On Fri, Oct 18, 2019 at 03:01:58PM +0000, James Sandford wrote:
> Hello,
> I'm updating the I-D to address these (and other) comments. I'm unsure what isn't meant by the last item, though. "I might include a short note that the text contents are meant to be interpreted by a human, and content from untrusted sources should be viewed with appropriate levels of skepticism". Surely this applies to any media carried over RTP? Or at least any which may be rendered for a human audience.

Basically so, yes.  So not adding such a note is perfectly fine.  As a
little more background, I had started off by thinking about the possible
consequences of modifying the timeslot for which a piece of text would be
active (whether in the XML or by way of the RTP-timestamp epoch, and
whether by direct modification of the contents or by cutting/pasting
contents/headers).  When the text is subtitles on audio/video content, such
rearrangement could cause misattribution or similar.  But, as you note, the
general case is nothing new.

-Ben