#8416: disposition option ignored when muxing hls from a web url and srt 
subtitle
file together in an mkv container
-------------------------------------+-------------------------------------
             Reporter:  bgx90        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avformat
              Version:  4.2          |               Resolution:
             Keywords:  disposition  |               Blocked By:
  mkv                                |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by mkver):

 * keywords:  disposition default subtitle subtitles => disposition mkv
 * component:  undetermined => avformat


Comment:

 This is very related to #8173: The Matroska muxer first looks for whether
 any input stream has disposition default; if not, it flags every track as
 default track (if there is more than one track of a given kind, this will
 result in several tracks of this kind being marked as default). The reason
 is that lots of other formats don't have the concept of default tracks, so
 the input streams are often not flagged as such (even when there is only
 one track of a kind in which case treating this track as default by
 default even when it does not have the disposition default explicitly set
 makes sense).

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8416#comment:1>
FFmpeg <https://ffmpeg.org>
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