[Mp7-tech] Backward compatibility

[Rob Koenen (MPEGIF)]

Vasant,
MPEG-7 is very different in nature than MPEG-2 and MPEG-4. The data that
MPEG-7 represents can arguably be described as 'metadata'. MPEG-7 does not
seek to represent the pixels and waveforms with a representation purpose.
So the answer is that MPEG-7 is not backward compatible inthe sense that the
MPEG-7 standard does not defie and bitstream decoding tools that are even
similar to the ones in MPEG-2 and MPEG-4.
Best,
Rob
-----Original Message-----
From: Vasant Manohar [mailto:vmanohar csee.usf.edu] 
Sent: Sunday, 8 February 2024 08:12
To: mp7-tech lists.mpegif.org
Subject: [Mp7-tech] Backward compatibility
Hi All,
I am new out here and am an amateur as for MPEG-7 is concerned.
I wanted to know if MPEG-7 is backward compatible. What I wanted to know is,
will a MPEG-7 decoder be able to decode a MPEG-2 or MPEG-4 video file? 
Because of the apparent view that MPEG-7 is a Multimedia content description
standard, as against a standard which deals with coding of motion pictures
and audio as other MPEGs, I am kind of confused if a MPEG-7 decoder can
decode prior MPEG formats. In essence, what I see is MPEG-7 is not a
superset of its predecessors.
Can someone clear this up for me.
Thanks in advance. 
Vasant 
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