Media Types in 3GPP Timed text draft (was: RE: [AVT] RTP andMediaTypes)

Jose Rey rey at
Tue Sep 7 15:35:57 CEST 2004

> > Ok, I was guiding myself more by the what I understood as type of apps.
> > However, just for my clarity: if we wouldn't use the "relaxed rules"
> > could I still use text/? Is text/t140 conformat to the 'traditional
> > rules'?
> None of the RTP payload formats -- not text, audio or video -- can be
> used with the 'traditional' rules. This is the reason why the MIME
> registration rules are being updated.

It is just that in the MIME presentation in SD it says that text/t140 does
'arguably' comply with the traditional rules...what this 'arguably' means
was not clear to us.

> >>> The MIME subtype /3gpp-tt cannot be used for HTML download since for
> >>> that
> >>> purpose a 3gp file and therefore the video/3gp MIME type is used.
> >>> So I
> >>> think this is indeed restricted to RTP.  However,  what is the gain
> >>> of
> >>> doing that?
> >>
> >> My point was that, since this is restricted to transport via RTP, it
> >> can be registered under the "text" top-level media type.
> >
> > What I mean is what would be the use of having two, not one or the
> > other.
> The media type for the file format may well be different than that for
> the RTP payload format, if that's what you mean.

No. What I mean is what would be the use of having two for RTP, which in
this case is just confusing.


> Colin

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