Hello Helge,
I just tried to collect some information for the Maintainer.
Might this be the expected behaviour?
This image seems to have a stored Delay and Duration value:
$ identify -verbose 2006_08262.gif
Image:
Filename: 2006_08262.gif
...
Delay: 20x100
Duration: 20
...
These 20 get get read here:
(rr) bt
#0 0x7fcdf0974404 in ReadGIFImage (image_info=,
exception=) at ../../coders/gif.c:1098
#1 0x7fcdf0717c20 in ReadImage
(image_info=image_info@entry=0x558dfa3c9680,
exception=exception@entry=0x558dfa3c4c10) at ../../magick/constitute.c:563
#2 0x7fcdf05ce223 in DisplayImageCommand (image_info=0x558dfa3c9680,
image_info@entry=0x558dfa3c54e0, argc=, argc@entry=2,
argv=, argv@entry=0x7fff189926b8,
wand_unused_metadata=wand_unused_metadata@entry=0x0,
exception=exception@entry=0x558dfa3c4c10) at ../../wand/display.c:492
#3 0x7fcdf0616f80 in MagickCommandGenesis
(image_info=image_info@entry=0x558dfa3c54e0, command=0x7fcdf05cd5b0
, argc=argc@entry=2, argv=argv@entry=0x7fff189926b8,
metadata=metadata@entry=0x0, exception=exception@entry=0x558dfa3c4c10) at
../../wand/mogrify.c:173
#4 0x558df995d0fa in DisplayMain (argv=0x7fff189926b8, argc=2) at
../../utilities/display.c:89
#5 main (argc=2, argv=0x7fff189926b8) at ../../utilities/display.c:100
And get interpreted here, resulting in a delay of 0:
14934
delay=display_image->delay/MagickMax(display_image->ticks_per_second,1L);
(rr) bt
#0 XDisplayImage (display=display@entry=0x558dfa3c17f0,
resource_info=resource_info@entry=0x7fff18991270, argv=0x558dfa3c15b0, argc=2,
image=image@entry=0x7fff18990a50, state=state@entry=0x7fff18990a48) at
../../magick/display.c:14935
#1 0x7fcdf05cfaa7 in DisplayImageCommand (image_info=0x558dfa3c9680,
image_info@entry=0x558dfa3c54e0, argc=, argc@entry=2,
argv=, argv@entry=0x7fff189926b8,
wand_unused_metadata=wand_unused_metadata@entry=0x0,
exception=exception@entry=0x558dfa3c4c10) at ../../wand/display.c:538
#2 0x7fcdf0616f80 in MagickCommandGenesis
(image_info=image_info@entry=0x558dfa3c54e0, command=0x7fcdf05cd5b0
, argc=argc@entry=2, argv=argv@entry=0x7fff189926b8,
metadata=metadata@entry=0x0, exception=exception@entry=0x558dfa3c4c10) at
../../wand/mogrify.c:173
#3 0x558df995d0fa in DisplayMain (argv=0x7fff189926b8, argc=2) at
../../utilities/display.c:89
#4 main (argc=2, argv=0x7fff189926b8) at ../../utilities/display.c:100
(rr) print display_image->ticks_per_second
$11 = 100
(rr) print display_image->delay
$12 = 20
(rr) next
14935 timer=GetMagickTime()+(delay == 0 ? 1 : delay)+1;
(rr) print delay
$13 = 0
https://sources.debian.org/src/imagemagick/8:6.9.11.60+dfsg-1.3/magick/display.c/#L14934
One could modify the delay to e.g. 1000 centiseconds == 10 seconds:
time display-im6.q16 -delay 1000 2006_08262.gif
I am not sure how this "Delay" and "Duration" is expected
to be interpreted (or ignored?) for a GIF with just one picture.
Kind regards,
Bernhard
