[Bug 767771] qtdemux/jpegdec: Interlaced content detected as progressive

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=767771

--- Comment #20 from Dave <dave at digits.tv> ---
The first value is the number of fields per frame (1 or 2).  If 2 fields are
indicated then the second value describes the field order.  From the Quicktime
format specification:
The following defines the permitted variants: 0 – There is only one field. 1 –
T is displayed earliest, T is stored first in the file. 6 – B is displayed
earliest, B is stored first in the file. 9 – B is displayed earliest, T is
stored first in the file. 14 – T is displayed earliest, B is stored first in
the file.

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