[Bug 783324] New: dashdemux: Nominal bitrate is estimated rather than set from selected stream

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=783324

            Bug ID: 783324
           Summary: dashdemux: Nominal bitrate is estimated rather than
                    set from selected stream
    Classification: Platform
           Product: GStreamer
           Version: 1.12.0
                OS: Linux
            Status: NEW
          Severity: minor
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: ap.jonathan.miles at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

adaptivedemux sets GST_TAG_NOMINAL_BITRATE to stream->fragment.bitrate. If
fragment.bitrate isn't set by the subclass, it will calculate a bitrate  based
on fragment size and duration.

As dashdemux doesn't set fragment.bitrate, and the fragments vary in size, this
means that the nominal bitrate for DASH playback varies and doesn't reflect the
headline bitrate of the selected stream.

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