[FFmpeg-trac] #11002(avformat:closed): Unnecessary PNG metadata generated

FFmpeg trac at avcodec.org
Thu May 9 00:59:59 EEST 2024


#11002: Unnecessary PNG metadata generated
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:  (none)
  MasterQuestionable                 |
                 Type:  enhancement  |                   Status:  closed
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:  invalid
             Keywords:  png          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by MasterQuestionable):

 ͏    That cannot be proved: what difference does it make from mere
 baseless assertions?\\
 ͏    .\\
 ͏    Standards established don't necessarily imply being well-designed:\\
 ͏    Blindly following without thinking shall regardless trap.

 ͏    [ Quote !MasterInQuestion @ CE 2024-04-13 22:06:50 UTC:\\
 https://github.com/AOMediaCodec/iamf/issues/764#issuecomment-2053773784\\
 ͏    I wonder a question:\\
 ͏    How should all those sophisticated design be actually presented: when
 most devices have only !Mono/Stereo speakers?.. ]\\
 <.>    Skyscraper built on air..?

 ͏    [ Quote !MasterQuestionable @ CE 2024-05-08 16:42:06 UTC:\\
 https://trac.ffmpeg.org/ticket/10891#comment:5\\
 ͏    https://streams.videolan.org/ffmpeg/incoming/10891/00006.MTS\\
 ͏    (~ 21.02 MiB; M2TS: H.264 (AVC) video, 11.044 s, 29.97 FPS,
 1920x1080, YUV 4:2:0, ~ 19.57 MiB; A52/AC-3 audio, 11.072 s, 48,000 Hz,
 346 KiB; ... ~ 1.11 MiB) ]\\
 <.>    What does that pointless ~ 1.11 MiB do? (> 5% overhead)

 ͏    Thus why I didn't give it high priority: mostly as optimization.\\
 \\
 \\
 ͏    What about the interoperability havoc?\\
 ͏    The very White could never be the very White: exact display is
 display media dependent.\\
 ͏    .\\
 ͏    Making things to further differ when viewed with different
 applications... "counter-fix" perhaps.\\
 \\
 \\
 ͏    Perhaps of some use for those cannot be trivially losslessly re-
 encoded.\\
 ͏    But not the case for PNG.

 ͏    Note:\\
 ͏    Even losslessly captured: much of which are also unwanted noises.\\
 ͏    (that would be preferably filtered-out; or whose accuracy really
 doesn't matter)\\
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11002#comment:5>
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