[Bug 796880] New: matroskademux : seek to cluster with error throws error during seek

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796880

            Bug ID: 796880
           Summary: matroskademux : seek to cluster with error throws
                    error during seek
    Classification: Platform
           Product: GStreamer
           Version: 1.14.0
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: kumar.vikram at lge.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 373175
  --> https://bugzilla.gnome.org/attachment.cgi?id=373175&action=edit
Issue Stream

The attached stream is an error stream. Duration is 0:24:14.9 but plays till
0:11:19.6 as there is no further clusters.

When seek is done to any position greater that 0:11:20, we get an error while
executing seek.

The error occurs while the method is gst_matroska_demux_search_pos scanning for
matching cluster.

Failure happens because of the following error:

0:00:58.475704730  3013       0xa0c950 ERROR               ebmlread
ebml-read.c:141:gst_ebml_peek_id_length:<matroskademux0> Invalid EBML ID size
tag (0x8) at position 102897769 (0x6221869)

Refer to attached log file for more details.

During playback, similar error is thrown but
gst_matroska_demux_check_parse_error handles the error and searches for next
cluster. Similar error handling is required when seeking.

The finding suitable cluster logic in matroska-demux has been changed from GST
v1.12 to v1.14.

Expected output:
We expect to play next file without error popup message even if the file has an
issue.

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