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

[FFmpeg]

#8459: V360 + BLEND
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             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 villmer):

 Yes, the workaround actually looks quite good. Great technique. Thank you
 for sharing this. I see two issues. First, is having to know the exact x
 positions of both vertical lines beforehand (although I suppose some kind
 of algorithm could determine this). Second, this  process can only be done
 once the entire stitching process has been complete.

 Ideally, the v360 command needs to automatically determine how to
 implement the blending/luminance gradient techniques '''during''' a single
 stiching process to avoid having to do 2 separate processes. The stitching
 and blending should be done all at the same time in my opinion. Knowing
 the radius of both fisheye circles should be enough to determine where the
 blending (luminance manipulation) should take place.

 I hope the FFMPEG team will consider this. It's highly needed in the VR
 world right now.
 Thanks again for sharing your technique mkoch. Really excellent.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8459#comment:12>
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