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《冰雪奇缘》之缘——A站弹幕 JSON 转 crt

 3 years ago
source link: https://blog.lilydjwg.me/2014/3/3/frozen-danmaku-cmt-json-to-crt-subtitles.43226.html
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《冰雪奇缘》之缘——A站弹幕 JSON 转 crt

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都是《冰雪奇缘》惹的祸，不仅画面美仑美奂，音乐激荡人心，而且还玩多语言版本的主题曲。

而 you-get 竟助纣为虐，把歌词给下回来了！只叹 soimort 没有好人做到底，留一个语义不详的 JSON 让我情何以堪。

好在 muzuiget 才识不凡，有码略释其义，遂如我光影、声音、文字三位一体之愿！

编成代码数十行，只为女王歌一曲：

cmtjson2crt
#!/usr/bin/env python3
import json
import sys
def cmtjson_reader(f):
data = json.load(f)
for o in data:
c = o['c'].split(',')
m = o['m']
# see
start = float(c[0])
yield start, m
def format_time(t):
s, ms = divmod(t, 1)
s = int(s)
ms = int(ms * 1000)
m, s = divmod(s, 60)
h, m = divmod(m, 60)
return '%d:%02d:%02d,%03d' % (h, m, s, ms)
def crt_writer(f):
i = 0
fmt = '%d\n%s --> %s\n%s\n\n'
try:
while True:
t, m = yield
ts = format_time(t)
if i != 0:
f.write(fmt % (i, format_time(old_t), ts, old_m))
i += 1
old_t = t
old_m = m
except GeneratorExit:
f.write(fmt % (
i+1, format_time(t), format_time(t+2), m))
def main():
w = crt_writer(sys.stdout)
w.send(None)
old_d0 = 0
for d in cmtjson_reader(sys.stdin):
if d[0] < old_d0:
break
w.send(d)
old_d0 = d[0]
if __name__ == '__main__':
main()

mplayer 君虽识得 UTF-8 之码，却不通 fontconfig 之术，部分文字沦为了下划线。又及。

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