[Bug 740804] New: BYTES format duration query fail on demux

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=740804
  GStreamer | gst-plugins-good | git

           Summary: BYTES format duration query fail on demux
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: chul0812 at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=291629)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=291629)
qtdemux: ask to upstream for duration query

I used BYTES format query when get the size of the contents on http streaming
case.
Demuxers usually respond TIME format duration query, but it does not handle
BYTES format.
I'm curious about why demux does not ask to upstream at least.

At now, BYTES format duration query is failed at demux, then baseparse
calculated bytes duration based on time duration, but it was inaccurate.

So, I modify to get accurate duration from source element (e.g. souphttpsrc).

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