montage seems to be broken with -colorspace YCbCr
Posted: 2017-05-21T10:26:39-07:00
Problem:
Image computed by montage is messy (chrominance)
Command line which cause the problem:
OS:
Version from homebrew:
How to mitigate:
output png from montage and then
Image computed by montage is messy (chrominance)
Command line which cause the problem:
Code: Select all
montage -background black -tile 10x `for FRAME in 33 100 167 234 301 367 434 501 568 635 701 768 835 902 969 1035 1102 1169 1236 1303 1369 1436 1503 1570 1637 1703 1770 1837 1904 1971 2037 2104 2171 2238 2305 2371 2438 2505 2572 2639; do echo thumb_$FRAME.png; done` -geometry 160x90+0+0 -quality 100 -sampling-factor 4:2:0 -colorspace YCbCr pivot.jpgCode: Select all
macOS Sierra 10.12.4 (16E195)Code: Select all
Version: ImageMagick 7.0.5-4 Q16 x86_64 2017-03-25 http://www.imagemagick.org
Copyright: © 1999-2017 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules
Delegates (built-in): bzlib freetype jng jpeg ltdl lzma png tiff xml zliboutput png from montage and then
Code: Select all
convert pivot.png -quality 100 -sampling-factor 4:2:0 -colorspace YCbCr pivot.jpg