[FFmpeg-trac] #8459(avfilter:open): V360 + BLEND

FFmpeg trac at avcodec.org
Sat Feb 22 23:46:05 EET 2020


#8459: V360 + BLEND
-------------------------------------+------------------------------------
             Reporter:  villmer      |                    Owner:  villmer
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  v360         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by mkoch):

 Most probably the right sides of the borders are always at WIDTH/4 and
 WIDTH*3/4, and the left side is at one pixel less. It would be a little
 bit more complicated if WIDTH isn't a multiple of 4.
 There is no need for two separate processes. In the filter chain you can
 first use the v360 filter and then the geq filter, separated by a comma:

 -vf "v360=input=dfisheye:output=e,geq=..."

 You find more examples for remap and v360 in my book:
 http://www.astro-electronic.de/FFmpeg_Book.pdf

 I agree with you that smoothing would be a nice enhancement for the v360
 filter.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8459#comment:13>
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