[FFmpeg-trac] #3667(undetermined:closed): Enhancement: concat can not directly work with mks or mp4

[FFmpeg]

#3667: Enhancement: concat can not directly work with mks or mp4
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             Reporter:  artofit      |                    Owner:
                 Type:  enhancement  |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:  invalid
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by artofit):

 ​https://trac.ffmpeg.org/wiki/How%20to%20concatenate%20(join,%20merge)%20media%20files
 "While the demuxer works at the stream level, the concat protocol works at
 the file level. Certain files (mpg and mpeg transport streams, possibly
 others) can be concatenated. This is analogous to using cat on UNIX-like
 systems or copy on Windows. In general, the demuxer is the better option."

 So why this method is not deprecated??

 Indeed, if I compare the 2 concat methods on a opus files, that I split,
 the orginal and the version of concate have differend MD5 signatures,
 eventhough opus like other support lossless concat.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3667#comment:2>
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