[FFmpeg-trac] #11356(ffmpeg:new): allow dynamic metadata updates (from named pipe / fifo)

[FFmpeg]

#11356: allow dynamic metadata updates (from named pipe / fifo)
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             Reporter:  Björn   |                     Type:  enhancement
               Status:  new     |                 Priority:  normal
            Component:  ffmpeg  |                  Version:  6.0.1
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
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 Summary of the bug:

 I try to find a solution to update metadata in a generated HLS live audio
 stream dynamicaly.

 I came up with this idea:

 mkfifo /tmp/metadata.fifo

 ffmpeg -i http://some.icecast.url:8000/broadcast -f ffmetadata -i
 /tmp/metadata.fifo -map_metadata 1 ...

 echo "artist=Test" >> /tmp/metadata.fifo

 but that doesn't work out beecho "artist=bla2fsa" >>
 /tmp/metadata.fifocause ffmpeg doesn't seem to read the names pipe after
 new data arrived there. Otherwise it would be a great solution to allow
 dynamic metadata updates. Do you see a way to allow ffmpeg to read from
 the fifo continouisly?

 How to reproduce:
 {{{
 % ffmpeg -i input ... output

 ffmpeg version 6.0.1 Copyright (c) 2000-2023 the FFmpeg developers
   built with gcc 12 (Debian 12.2.0-14)
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11356>
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