[FFmpeg-user] Existing Signature Comparison

[Sugar Myojin]

Carl,
Thank you for kindly responding.

Yes, that's correct, that's what I am referring to. I have output the
MPEG-7 video signatures for a list of videos (a video database).
I then calculate the MPEG-7 video signature for a new video that I am
considering adding to that database, so that I can compare the new video to
the videos in the database via the signature only.
(I imagine that using the MPEG-7 video signatures should be able to reduce
the amount of time taken for this operation.)

I am trying to do something like this, but I think it may not be supported
by ffmpeg.exe, but I am trying to be absolutely sure.

Commandline> ffmpeg -i [1st signature file] -i [2nd signature file]
-filter_complex signature=detectmode=full:nb_inputs=2 -f null -

Any advice would be greatly appreciated. Thank you.

Kind regards,
Scott

On Wed, May 6, 2020 at 1:14 AM Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> Am Di., 5. Mai 2020 um 18:10 Uhr schrieb Sugar Myojin <
> sugar.myojin at gmail.com>:
>
> > I am trying to compare with ffmpeg.exe two the signatures (xml) of two
> > videos which I output earlier.
>
> Please explain what "signatures (xml)" are.
>
> There is a "signature" filter that supports calculating the MPEG-7 video
> signature, is that what you mean?
>
> Carl Eugen
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