I just try to convert png to bmp using openwrt on arduino yun. However I never convert it, this means new bmp file don't change data structure (e.g. header name) but filename was changed.
I also checked imagemagick version, below is result.
This version of is not same between package name and actual software.
opkg install imagemagick
opkg install imagemagick-png
opkg install imagemagick-jpeg
opkg install imagemagick-tools
(remark : installed current version : 6.7.8-2)
convert -version
Version: ImageMagick 6.7.8-10 2014-11-13 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC
Features:
In other way, I also tried to install GraphicsMagick based on result 1).
I found this package also has problem.
wget http://downloads.arduino.cc/openwrtyun/1/packages/GraphicsMagick_1.3.8-2_ar71xx.ipk
wget http://downloads.arduino.cc/openwrtyun/1/packages/GraphicsMagick-jpeg_1.3.8-2_ar71xx.ipk
opkg install GraphicsMagick_1.3.8-2_ar71xx.ipk
opkg install GraphicsMagick-jpeg_1.3.8-2_ar71xx.ipk
opkg update
gm
/bin/ash: gm: not found
I think it is package(compile) problem, so please let me know how to resolve.
Thanks.