[FFmpeg-trac] #7242(avfilter:new): zoompan filter variables 'in' and 'on' start at 2, 1 instead of at 0

[FFmpeg]

#7242: zoompan filter variables 'in' and 'on' start at 2, 1 instead of at 0
------------------------------------+------------------------------------
             Reporter:  jdlh        |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:  zoompan     |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by Gyan):

 There is a bug of sorts with the value of **in** but the assignment logic
 of **in** and **on** is correct. They are meant to be cardinal values,
 measuring the amount fed in and fed. The **n** in crop, drawtext amd some
 other filters are ordinal values and represent the index which starts from
 0.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7242#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker