[FFmpeg-trac] #3689(undetermined:closed): ffprobe identifies caption track as subtitle

[FFmpeg]

#3689: ffprobe identifies caption track as subtitle
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             Reporter:               |                    Owner:
  JerryScoggins                      |                   Status:  closed
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  unspecified  |               Resolution:  wontfix
             Keywords:  mov cc       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by Timothy_Gu):

 * status:  reopened => closed
 * resolution:   => wontfix


Comment:

 FFmpeg does not distinguish subtitles from captioning internally.
 Therefore, in real life caption may not = subtitles, in FFmpeg the
 handling for captions = handling for subtitles.

 For example, EIA/CEA-608 has a dedicated CODEC_ID assigned to it, and it
 is considered a subtitle in the
 [https://github.com/FFmpeg/FFmpeg/blob/03b88f6b393359957ac9f7f0fb9b148ab51b3da5/libavcodec/codec_desc.c#L2603
 codec descriptions]. We do not have a dedicated CODEC_ID for CEA-708 yet,
 but we will not distinguish it from subtitles either.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3689#comment:10>
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