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.

public/subs/captain-marshmallow.srt

@@ -0,0 +1,87 @@
+1
+00:00:08,059 --> 00:00:10,640
+Attention please! Captain on the deck!
+
+2
+00:00:10,640 --> 00:00:13,919
+Sofa is my pirate ship, the carpet is the sea
+
+3
+00:00:13,919 --> 00:00:17,519
+Pillow fort is waiting there for teddy bear and me
+
+4
+00:00:17,519 --> 00:00:20,960
+Put a paper triangle upon my curly head
+
+5
+00:00:20,960 --> 00:00:25,339
+No one has to take a nap or go to sleep in bed!
+
+6
+00:00:25,679 --> 00:00:31,079
+Left turn! Right turn! Watch out for the shark!
+
+7
+00:00:31,079 --> 00:00:35,880
+Wait—that's just the fluffy dog barking in the dark!
+
+8
+00:00:36,780 --> 00:00:38,420
+Aye, aye, Captain Marshmallow!
+
+9
+00:00:38,420 --> 00:00:42,039
+Sailing where the candy breezes blow!
+
+10
+00:00:42,039 --> 00:00:45,560
+Cookies in the treasure chest, chocolate on the map
+
+11
+00:00:45,560 --> 00:00:50,740
+Give a little salute and a double-double clap! (Clap-clap!)
+
+12
+00:00:50,740 --> 00:00:53,380
+We rule the living room today!
+
+13
+00:00:56,340 --> 00:00:59,600
+Homework is forbidden by the royal pirate law
+
+14
+00:00:59,600 --> 00:01:03,119
+Every single citizen must draw a dinosaur!
+
+15
+00:01:03,119 --> 00:01:07,280
+More pudding for the afternoon, and juice inside the cup
+
+16
+00:01:07,280 --> 00:01:12,780
+When the clock strikes dinner time, we'll eat the treasure up!
+
+17
+00:01:13,799 --> 00:01:15,280
+Aye, aye, Captain Marshmallow!
+
+18
+00:01:15,280 --> 00:01:19,000
+Sailing where the candy breezes blow!
+
+19
+00:01:19,000 --> 00:01:22,459
+Cookies in the treasure chest, chocolate on the map
+
+20
+00:01:22,459 --> 00:01:26,819
+Give a little salute and a double-double clap! (Clap-clap!)
+
+21
+00:01:26,819 --> 00:01:30,260
+We rule the living room today!
+
+22
+00:01:33,000 --> 00:01:34,859
+Mission accomplished! Yay!