[FFmpeg-trac] #3389(ffmpeg:new): Feature Request - Isolate and normalize video content

FFmpeg trac at avcodec.org
Sun Feb 16 13:52:28 CET 2014


#3389: Feature Request - Isolate and normalize video content
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             Reporter:  Rafajafar    |                     Type:
               Status:  new          |  enhancement
            Component:  ffmpeg       |                 Priority:  wish
             Keywords:  feature      |                  Version:
  request normalize video            |  unspecified
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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 Hey,

 I have an interesting problem and I'm solving it with OpenCV. It's be
 great if the solution could come straight from ffmpeg, though!

 I need to:

 1) cropdetect
 2) crop surrounding borders from a video
 3) resize video to normalize its dimensions

 In other words, all I want is one command that will detect the frame-by-
 frame borders and in the same step, crop it, and also resize it. And I
 want this done for the entire video, not a single frame. It's gotta be
 possible, right?

 The applications are very useful in video analysis. I've spoken to
 colleagues of mine and they are doing this manually themselves. It would
 be great to be able to work this feature into the automation surrounding
 ffmpeg in our tools. My personal application, for instance, is in
 detecting videos that are similar using content perceptual hashing.
 Another colleague of mine works for the Center for Missing and Exploited
 Children. He does similar work, but with pHashing. I can see applications
 for ContentID type systems across the board.

 I'm sure this is a low on the totem pole request, but if you have any
 spare cycles, this would really rock in the world of computer vision and
 video analysis!

 Thanks for your consideration,

 --Collin

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Ticket URL: <https://trac.ffmpeg.org/ticket/3389>
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