bash – imagemagick在gif中转换单个帧延迟

我有一个充满图像的目录,我想变成一个gif.

每个文件名遵循以下模式：< zero_padded_index> _< delay_in_milliseconds> .gif

示例：00001_1432.gif

我可以用imagemagick创建gif动画：convert -loop 0 -delay 10 * .gif out.gif

问题是,我希望每个帧根据其名称中的第二个数字有不同的延迟.

convert -delay 0 -loop 0 *.gif output.gif

for gif in *.gif; do

    name=${gif%.gif}
    index=$(echo ${name%-*} | sed 's/0*//')
    delay=${name#*-}

    # 1. convert milliseconds to w/e imagemagick -delay uses.
    # 2. update the frame at the correct index.

done;

我是否逐步建立gif？还是回去改变事后呢？
我的imagemagick剁不符合标准.

所以如果我正在接近这个问题,我会做以下(如果我明白了)

给出以下文件：

[root@dev7 ~]# ls -lta so/
total 728
drwxr-xr-x   2 root root   4096 Aug 13 18:35 .
dr-xr-x---. 17 root root   4096 Aug 13 18:35 ..
-rw-r--r--   1 root root  18933 Aug 13 18:23 00007_1432.gif
-rw-r--r--   1 root root  18594 Aug 13 18:23 00006_1432.gif
-rw-r--r--   1 root root  18984 Aug 13 18:23 00005_1432.gif
-rw-r--r--   1 root root  19601 Aug 13 18:23 00004_1444.gif
-rw-r--r--   1 root root  19408 Aug 13 18:23 00003_1432.gif
-rw-r--r--   1 root root  18632 Aug 13 18:23 00002_1552.gif
-rw-r--r--   1 root root  20104 Aug 13 18:23 00001_1432.gif
[root@dev7 ~]#

我的脚本将如下所示：

#!/bin/bash -x

# directory of the individual gifs
_dir=/root/so/

# get gifs and make sure your sort them in order
gifs=$(find $_dir -name *.gif|sort|xargs)

# this is going to be the imagemagick command
_CONVERT="convert "

# make sure the list of gifs look correct
echo $gifs

for gif in $gifs; do

    # full path of each gif
    full_path=$gif

    # get just the name of the gif ( originally I was going to use this if everything was happing within the same directory )
    name=$(echo ${gif##*/})
    #echo -e "\n$name"

    # Get the index
    index=$(echo ${gif##*/} | cut -d\_ -f1)
    #echo -e "\n$index"

    # Get the delay of the current image
    delay=$(echo ${gif##*/} | cut -d\_ -f2| sed "s,.gif,")
    # echo -e "\n$delay"

    # add correct delay options to current gif,append to existing command
   _CONVERT="${_CONVERT} -delay $delay $gif " 

done;

# add the outpt of where you're going to put your gif
_CONVERT="${_CONVERT} -loop 0 -layers Optimize /root/so/stackoverflow.gif"

# show full command
echo "Convert cmd: $_CONVERT"

# run it,then go get your image
eval $_CONVERT

生成的命令示例：

Convert cmd: convert  -delay 1432 /root/so/00001_1432.gif  -delay 1552 /root/so/00002_1552.gif  -delay 1432 /root/so/00003_1432.gif  -delay 1444 /root/so/00004_1444.gif  -delay 1432 /root/so/00005_1432.gif  -delay 1432 /root/so/00006_1432.gif  -delay 1432 /root/so/00007_1432.gif  -layers Optimize /root/so/stackoverflow.gif

希望这是你正在寻找的.