[FFmpeg-trac] #6298(ffmpeg:new): Using image2 duplicates frames even with -r as input option

[FFmpeg]

#6298: Using image2 duplicates frames even with -r as input option
---------------------------------+--------------------------------------
             Reporter:  LordHDL  |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  ffmpeg   |                  Version:  git-master
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+--------------------------------------
 '''Summary of the bug''': Using image2 duplicates frames even with -r as
 input option
 '''How to reproduce''': Use `-f image2` to dump a video's frames as images
 into a folder.

 Example

 {{{
 ffmpeg -r 59.77 -i /Users/HDL/Desktop/TradeWin.mov -f image2
 ~/Desktop/frames/TradeWinMov/image-%03d.tiff
 }}}

 This will result in 2 duplicate frames.  Meanwhile this...

 {{{
 ffmpeg -r 59.77 -i /Users/HDL/Desktop/TradeWin.mov -f nut /dev/null
 }}}

 ...does not dupe anything.

 Full console output is in the attachment.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6298>
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