[Bug 747731] New: basesrc: Always setting segment.start as DTS on first buffer

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=747731

            Bug ID: 747731
           Summary: basesrc: Always setting segment.start as DTS on first
                    buffer
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: slomo at coaxion.net
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: lrn1986 at gmail.com, slomo at coaxion.net, t.i.m at zen.co.uk,
                    ylatuya at gmail.com
     GNOME version: ---

+++ This bug was initially created as a clone of Bug #747722 +++

Currently basesrc always sets the segment.start (or 0) as the DTS of the first
buffer if the subclass did not provide a DTS. Live sources that provide raw
data usually don't set any DTS, so in those cases the first buffer would always
get a DTS of 0.

This seems wrong, and like something that should only be done if
do-timestamp=true. It's not guaranteed that the first buffer should have a DTS
of 0, the source might start much later.


(And apart from that we should never set DTS on raw media!)

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