#7451: mjpeg movies have lifted black
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Reporter: fnordware | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: unspecified
Keywords: mjpeg | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug: If I start with a PNG sequence or ProRes movie that
has areas of black pixels and transcode to mjpeg, the black areas are not
quite black. This can be verified by converting the mjpeg movie back to
PNG.
How to reproduce:
{{{
% ffmpeg -i -start_number 0 -framerate 30.0 -i input.%03d.png -c:v mjpeg
-q 3 output.mov
% ffmpeg -i output.mov verify.%03d.png
ffmpeg version 4.0.2-tessus Copyright (c) 2000-2018 the FFmpeg developers
built with Apple LLVM version 9.1.0 (clang-902.0.39.2)
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/7451>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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