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Is there an application or online service that is able to find a position (either as a frame number or time from film beginning) in a film by a frame from that film, represented as standalone picture (even if that picture was converted, resized, cropped, etc.)?

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    If you leave out the cropped scenario, then ffmpeg could do this using a combination of the blend and blackdetect filters
    – Gyan
    Commented Oct 15, 2016 at 8:58
  • What do you mean by 'leave out the cropped scenario'?
    – green
    Commented Oct 15, 2016 at 11:51
  • Looks possible for uncropped images
    – Gyan
    Commented Oct 15, 2016 at 18:14
  • But if I know position (X,Y) of the cropped image in the frame, then I can crop entire film, like the frame was cropped) and make the procedure?
    – green
    Commented Oct 15, 2016 at 19:31
  • What maximum divergence between the image and actual frame in the film, with which the input data can be processed successfully?
    – green
    Commented Oct 15, 2016 at 19:39

1 Answer 1

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Try the command:

ffmpeg -i in.mp4 -loop 1 -i croppedframe.jpg -an -filter_complex "[0]crop=w:h:x:y[a];[1][a]blend=difference,blackframe=90:32" -f null - 

This will match a movie frame if at least 90% of the pixels have a difference in value of less than 32 with the image. Any such matching frames will have their timestamps shown

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