#11002: Unnecessary PNG metadata generated
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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 |
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Comment (by MasterQuestionable):
͏ Consider the following case:\\
͏ Generate a sample PNG using alike command there:
https://trac.ffmpeg.org/ticket/10989\\
͏ Process which with !`exiftool "-Gamma=200" "0.png" -o "1.png"`.\\
͏ Run !`ffmpeg -hide_banner -nostdin -i "0.png" -i "1.png" -lavfi
"ssim; [0][1]psnr" -f null -`. [ See also: #10924 ]\\
͏ .\\
͏ Now we have 2 visually distinct images: in fact identical.\\
͏ And displayed randomly across implementations...\\
\\
\\
͏ Again the similar aforementioned: "-af" this time.\\
͏ And the steganographic... Obfuscation?
͏ "originally" and proven unneeded bad design:\\
͏ Whose influence still propagated... unfortunate.
͏ Further explained in:\\
͏ https://github.com/MasterInQuestion/talk/discussions/3
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Ticket URL: <https://trac.ffmpeg.org/ticket/11002#comment:11>
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