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hoelee-blog/public/subs/paper-airplane-in-september.srt
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post: generating subtitles for songs that ship without timestamps
Tutorial on turning untimed AI-generated audio into LRC + SRT: align ASR word
timestamps against the KNOWN lyrics (SequenceMatcher) instead of trusting a
transcript, then a governor that rejects impossible anchors, refills runs by
unit-proportional duration, and enforces a 1.2 s minimum line gap.

Ships 18 English songs (342 subtitle lines, mean anchor coverage 0.96, 9/18
fully anchored) with synced lyrics plus downloadable .srt per track. Documents
both player bugs and the headless-Chrome numeric probe that finally caught them.
2026-10-20 22:09:34 +08:00

72 lines
1.4 KiB
Plaintext

1
00:00:10,420 --> 00:00:15,099
Sunlight on the wooden desk is moving inch by inch
2
00:00:15,099 --> 00:00:20,399
Sparrows on the telegraph wire never seem to flinch
3
00:00:20,880 --> 00:00:25,600
I fold a page of notebook paper creases nice and neat
4
00:00:25,600 --> 00:00:30,879
And throw it out the window to the quiet autumn street
5
00:00:30,879 --> 00:00:36,359
Fly away, paper plane, into the golden air
6
00:00:36,359 --> 00:00:41,640
Carry all the little words I didn't dare to share
7
00:00:41,640 --> 00:00:48,719
Goodbye to the summer clouds, hello to the breeze
8
00:00:48,719 --> 00:00:53,600
Floating past the bicycles and underneath the trees
9
00:01:03,299 --> 00:01:08,379
Chalk dust on the blackboard fades as afternoon goes by
10
00:01:08,379 --> 00:01:13,760
Clouds like cotton candy drift across the September sky
11
00:01:13,760 --> 00:01:18,900
Every simple little thing we took for granted then
12
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Stays inside a photograph we'll look at once again
13
00:01:24,299 --> 00:01:29,659
Fly away, paper plane, into the golden air
14
00:01:29,659 --> 00:01:34,900
Carry all the little words I didn't dare to share
15
00:01:34,900 --> 00:01:41,680
Goodbye to the summer clouds, hello to the breeze
16
00:01:41,680 --> 00:01:46,939
Floating past the bicycles and underneath the trees
17
00:01:57,780 --> 00:02:02,000
Underneath the autumn trees...
18
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Goodbye, summer days.