[Bug 645858] New: [flvdemux] memory leak when demuxing infinite FLV files

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=645858
  GStreamer | gst-plugins-good | git

           Summary: [flvdemux] memory leak when demuxing infinite FLV
                    files
    Classification: Desktop
           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: wulczer at wulczer.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
      GNOME target: ---
     GNOME version: ---


Created an attachment (id=184382)
 View: https://bugzilla.gnome.org/attachment.cgi?id=184382
 Review: https://bugzilla.gnome.org/review?bug=645858&attachment=184382

patch to fix the issue

This will cause flvdemux to grow infinitely in memory:

gst-launch videotestsrc ! ffenc_flv ! flvmux ! flvdemux ! fakesink

The problem is that it tries to build an index if it hasn't found one in the
metadata tag and with infinite (for instance streamed) FLV files it keeps on
building the index.

A solution would be to check if upstream handles seeking and skip building the
index if it doesn't. Patch to that effect attached. It's based on how baseparse
checks for upstream_seekable (actually, it's mostly copy/paste from baseparse).

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