[FFmpeg-trac] #7055(ffmpeg:new): Using decimate allows EIA-608 captions to pass through to MP4 files even when the -sn option is used

[FFmpeg]

#7055: Using decimate allows EIA-608 captions to pass through to MP4 files even
when the -sn option is used
-------------------------------------+-------------------------------------
             Reporter:  navilor      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  minor        |                Component:  ffmpeg
              Version:  3.4          |               Resolution:
             Keywords:  decimate,    |               Blocked By:
  captions                           |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by navilor):

 Update.

 This behavior also happens if you use pullup.

 {{{
 ffmpeg input.vob -vf
 pullup,dejudder,yadif=deint=1,crop=720:480:0:0,scale=720:480 -pix_fmt
 yuv420p -vsync 1 -sn -dn -map 0:1 -threads 0 -vcodec libx264 -r 23.976
 -b:v:0:1 695192 -bufsize 1274494 -maxrate 868990 -an -preset medium
 -profile:v high -g 48 -tune film -x264opts no-scenecut -map_metadata -1 -f
 mp4 -y output.mp4
 }}}

 When using either decimate or pullup both have subtitles that can be
 played back via VLC.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7055#comment:2>
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