Subject: [MMUSIC] Question about the various "range-spec"s defined for RTSP 2.0 (and RTSP 1.0)

From: Ross Finlayson <[email-masked]>
Date: Sat, 26 Nov 2011 11:53:33 -0800

In "draft-ietf-mmusic-rfc2326bis-28" (and preceding), a "npt-range-spec" is defined as
	npt-range-spec   =  ( npt-time "-" [ npt-time ] ) / ( "-" npt-time )
(ditto for "smtp-range-spec" and "utc-range-spec").

This suggests that the following are valid:
	npt = -now
	npt = -12.34

What are these supposed to mean (especially given that - in section 4.5 - you say that "Negative values are not defined")?

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/