[Bug 665894] New: MPEG PS Demuxer seeking is really slow on VBR files

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=665894
  GStreamer | gst-plugins-bad | 0.11.x

           Summary: MPEG PS Demuxer seeking is really slow on VBR files
    Classification: Platform
           Product: GStreamer
           Version: 0.11.x
        OS/Version: Mac OS
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: matej.knopp at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=203176)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=203176)
Patch to add binary search for seeking

When the bitrate varies too much the demuxer offset guess can be too far off.
Tested with 2.8 GB vob file some seeks took more than 1.5sec just to find the
right offset. Attached patch implements the seeking using binary search. During
my testing with same file it reduced the seek time to less than 10ms.

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