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fix(subtitles): collapse layered ASS lyrics across startup and seeks

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- Reconstruct fragment-only karaoke while preserving canonical animated signs
- Reprocess live subtitles after initial playback and seek updates
- Add a development launcher for playable media files
This commit is contained in:
sudacode
2026-08-19 22:55:10 -07:00
parent 695613b1e7
commit c01bcd9d0f
16 changed files with 830 additions and 55 deletions
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src/core/services/subtitle-cue-parser.test.ts
+57
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@@ -570,6 +570,63 @@ test('parseSubtitleCues does not promote a short animated fragment as a complete
);
});
test('parseSubtitleCues keeps short animated English dialogue as separate cues', () => {
const content = [
'[Events]',
'Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text',
'Dialogue: 0,0:00:01.00,0:00:02.00,English Dialogue,,0,0,0,,{\\t(0,100,\\fscx110)}Hi',
'Dialogue: 0,0:00:02.00,0:00:03.00,English Dialogue,,0,0,0,,{\\t(0,100,\\fscx110)}No',
].join('\n');
assert.deepEqual(parseSubtitleCues(content, 'test.ass'), [
{ startTime: 1, endTime: 2, text: 'Hi' },
{ startTime: 2, endTime: 3, text: 'No' },
]);
});
test('parseSubtitleCues does not reconstruct an already canonical English cue', () => {
const content = [
'[Events]',
'Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text',
'Comment: 0,0:00:01.00,0:00:03.00,OP English,,0,0,0,,{\\move(100,100,120,100)}POOF',
'Dialogue: 0,0:00:01.00,0:00:01.04,OP English,,0,0,0,,{\\pos(100,100)\\clip(m 1 1)}POOF',
'Dialogue: 0,0:00:01.04,0:00:01.08,OP English,,0,0,0,,{\\pos(100,100)\\clip(m 2 2)}POOF',
'Dialogue: 0,0:00:01.08,0:00:03.00,OP English,,0,0,0,,{\\pos(100,100)\\clip(m 3 3)}POOF',
].join('\n');
assert.deepEqual(parseSubtitleCues(content, 'test.ass'), [
{
startTime: 1,
endTime: 3,
text: 'POOF',
source: 'canonical-ass',
animationStartTime: 1,
animationEndTime: 3,
},
]);
});
test('parseSubtitleCues reconstructs a short positioned fragment without a lyric style name', () => {
const content = [
'[Events]',
'Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text',
'Dialogue: 0,0:00:01.00,0:00:03.00,Karaoke,,0,0,0,,{\\pos(100,100)\\t(0,100,\\fscx110)}Oh',
'Dialogue: 1,0:00:01.00,0:00:03.00,Karaoke,,0,0,0,,{\\pos(100,100)\\t(0,100,\\fscx110)}Oh',
].join('\n');
assert.deepEqual(parseSubtitleCues(content, 'test.ass'), [
{
startTime: 1,
endTime: 3,
text: 'Oh',
source: 'reconstructed-ass',
animationStartTime: 1,
animationEndTime: 3,
assStyle: 'Karaoke',
},
]);
});
test('parseSubtitleCues ignores timed comments without a matching animated dialogue cluster', () => {
const content = [
'[Events]',