gif 转 lottie json
(1)下载 lottie，解压后找到 /bin/lottie_convert.py，将其复制出来和gif图片放一起。
ps：使用 pip3 install lottie 安装的话是找不到这个文件的。
(2)安装 pillow
pip3 install pillow
(3)安装 demjson
pip3 install demjson
可能会报错：error in demjson setup command: use_2to3 is invalid。
解决方法：执行
pip3 install --upgrade setuptools==57.5.0
(4)打开 https://gitee.com/chockqiu/tiny-lottie 下载下来将生成好的json文件放到tiny-lottie目录中执行压缩命令
gif 转 json
python ./lottie_convert.py tutu.gif tutu.json
压缩 json
tiny-lottie.exe -q 75 -p
#!/usr/bin/env python3
import re
import sys
import os
import argparse
sys.path.insert(0, os.path.join(
os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
"lib"
))
from lottie.exporters import exporters
from lottie.importers import importers
from lottie.utils.stripper import float_strip, heavy_strip
from lottie import __version__
desc = """Converts between multiple formats
Supported formats:
- Input:
%s
- Output:
%s
""" % (
"\n".join("%s- %s" % (" "*2, e.name) for e in importers),
"\n".join("%s- %s" % (" "*2, e.name) for e in exporters),
)
parser = argparse.ArgumentParser(
description=desc,
formatter_class=argparse.RawTextHelpFormatter,
conflict_handler='resolve'
)
parser.add_argument("--version", "-v", action="version", version="%(prog)s - python-lottie " + __version__)
group = importers.set_options(parser)
group.add_argument(
"infile",
default="-",
nargs="?",
help="Input file"
)
group.add_argument(
"--input-format", "-if",
default=None,
choices=[importer.slug for importer in importers],
help="Explicit output format (if missing implied by the input filename)",
)
group = exporters.set_options(parser)
group.add_argument(
"outfile",
default="-",
nargs="?",
help="Output file"
)
group.add_argument(
"--output-format", "-of",
default=None,
choices=[exporter.slug for exporter in exporters],
help="Explicit output format (if missing implied by the output filename)",
)
group.add_argument(
"--sanitize",
default=False,
action="store_true",
help="Ensure the animation is 512x512 and 30 or 60 fps",
)
group.add_argument(
"--optimize",
"-O",
default=1,
type=int,
choices=[0, 1, 2],
help="Optimize the animation parameter:\n" +
" * 0 no optimization\n" +
" * 1 truncate floats\n" +
" * 2 truncate floats and names"
)
group.add_argument(
"--fps",
default=None,
type=int,
help="If present, changes the output fps to match this value"
)
group.add_argument(
"--width",
default=None,
type=int,
help="Override output width",
)
group.add_argument(
"--height",
default=None,
type=int,
help="Override output height",
)
def print_dep_message(loader):
if not loader.failed_modules:
return
sys.stderr.write("Make sure you have the correct dependencies installed\n")
for failed, dep in loader.failed_modules.items():
sys.stderr.write("For %s install %s\n" % (failed, dep))
if __name__ == "__main__":
ns = parser.parse_args()
if ns.infile == "-" and not ns.input_format:
parser.print_help()
infile = ns.infile
importer = None
if infile == "-":
infile = sys.stdin
else:
suf = os.path.splitext(infile)[1][1:]
for p in importers:
if suf in p.extensions:
importer = p
break
if ns.input_format:
importer = None
for p in importers:
if p.slug == ns.input_format:
importer = p
break
if not importer:
sys.stderr.write("Unknown importer\n")
print_dep_message(importers)
sys.exit(1)
outfile = ns.outfile
exporter = None
if outfile == "-":
outfile = sys.stdout
else:
exporter = exporters.get_from_filename(outfile)
if ns.output_format:
exporter = exporters.get(ns.output_format)
if not exporter:
sys.stderr.write("Unknown exporter\n")
print_dep_message(exporters)
sys.exit(1)
i_options = {}
for opt in importer.extra_options:
i_options[opt.name] = getattr(ns, opt.nsvar(importer.slug))
o_options = exporter.argparse_options(ns)
an = importer.process(infile, **i_options)
if ns.fps:
an.frame_rate = ns.fps
if ns.width or ns.height:
width = ns.width
height = ns.height
if not width:
width = an.width * height / an.height
if not height:
height = an.height * width / an.width
an.scale(width, height)
if ns.optimize == 1:
float_strip(an)
elif ns.optimize >= 2:
heavy_strip(an)
exporter.process(an, outfile, **o_options)
