[FFmpeg-trac] #8032(avfilter:new): libavfilter/af_adelay.c: one delay-string for all channels

[FFmpeg]

#8032: libavfilter/af_adelay.c: one delay-string for all channels
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             Reporter:  CoRoNe    |                     Type:  enhancement
               Status:  new       |                 Priority:  normal
            Component:  avfilter  |                  Version:  git-master
             Keywords:  adelay    |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 https://ffmpeg.org/ffmpeg-filters.html#adelay:
 > ''If number of given delays is smaller than number of channels all
 remaining channels will not be delayed.''
 [[br]]
 https://ffmpeg.org/pipermail/ffmpeg-user/2019-July/044814.html:
 > It's really cumbersome to always having to specify the delay for all(!)
 channels: `[1]adelay=158792S|158792S[E2];`
 > How about a default behaviour where specifying an amount of
 milliseconds/samples once(!) applies to all channels:
 `[1]adelay=158792S[E2];`
 > And if you want a specific delay for another channel, then you can do so
 as is already possible.
 > This would make my commandline a lot shorter!
 I wish the default behaviour for the adelay filter to be:
 ''"If only one delay-string is given, than this delay will be applied to
 all channels."''

 `adelay=1000|250|500`, to delay each channel separately would of course
 still be possible, but `adelay=1000` would then apply to '''all'''
 channels.

 https://ffmpeg.org/pipermail/ffmpeg-user/2019-July/044822.html:
 >> Do you want me to create a ticket to request the single time entry for
 all channels?
 > No, I can add such feature to adelay by default.
 Created this ticket in order for Paul to not forget.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8032>
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