[FFmpeg-trac] #2602(avformat:open): Implement a soft-telecine filter

[FFmpeg]

#2602: Implement a soft-telecine filter
-------------------------------------+-------------------------------------
             Reporter:  microchip    |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mpegps       |               Blocked By:
  pulldown                           |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by electron.rotoscope):

 The relevant code in mencoder seems to be lines 2468 - 2491 of
 \libmpdemux\muxer_mpeg.c in today's tarball and they used the code from
 [http://neuron2.net/dgpulldown/dgpulldown.html DGPulldown] which is a GPL
 program. The code in mencoder starts with: `/* excerpt from DGPulldown
 Copyright (C) 2005-2006, Donald Graft */`
 I think it would be useful to add this feature to all MPEG-2 encoding, not
 just MPEG-PS, as some authoring programs only take raw .m2v files. I know
 this is possible, DGPulldown can add the flags after the fact as a
 separate process.

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Ticket URL: <https://trac.ffmpeg.org/ticket/2602#comment:7>
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