将哔哩哔哩的CC字幕转换成SRT格式

bsub2srt.py

#python 3.7.3
#encoding=utf-8

import json
import sys

def srtftime(s):
    m=int(s/60)
    s-=m*60
    h=int(m/60)
    m-=h*60
    ms=s-int(s)
    return '%02d:%02d:%02d,%03d'%(h,m,s,ms*1000)

subs=json.loads(open(sys.argv[1],encoding='utf-8').read())
f=open(sys.argv[1]+'.srt',mode='w')
n=0
for d in subs['body']:
    n+=1
    f.write(str(n)+'\n'+srtftime(d['from'])+' --> '+srtftime(d['to'])+'\n'+d['content']+'\n\n')