[Bug 736003] mpegts : How to determine the same section

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=736003
  GStreamer | gst-plugins-bad | git

Edward Hervey <bilboed> changed:

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |NEEDINFO
                 CC|                            |bilboed at bilboed.com

--- Comment #1 from Edward Hervey <bilboed at bilboed.com> 2014-09-04 07:02:15 UTC ---
This sounds very wrong. Unless there is a noticeable stream change (you
switched channels or files, in which case the packetizer should potentially
expect new sections), a section with all these following identifiers identical
should represent the same content.

If there is a change, then there should be a different version_number
(otherwise it *completely* beats the whole point of having that field).

Furthermore, checking crc32 on *all* sections would be way too expensive, it
should only be done on (potentially) new ones.

Can you provide samples that better show this ? Or point to the ATSC
specifications that indicate that version_number is not updated for new content
in the same stream ?

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