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Add subtitle tracks and implement subtitle tracks for Matroska muxer

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This commit is contained in:
David Payr
2024-11-16 17:23:24 +01:00
parent fd1f7e5316
commit 39aea03565
12 changed files with 1653 additions and 1150 deletions
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dev/index.html
+13 -2
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@@ -78,12 +78,23 @@
codec: 'opus',
bitrate: 128e3,
});
let subtitleSource = new Metamuxer.TextSubtitleSource('webvtt');
output.addTrack(videoSource);
output.addTrack(audioSource);
output.addVideoTrack(videoSource);
output.addAudioTrack(audioSource);
output.addSubtitleTrack(subtitleSource);
output.start();
let simpleWebvttFile =
`WEBVTT
00:00:00.000 --> 00:00:10.000
Example entry 1: Hello <b>world</b>.
`;
subtitleSource.digest(simpleWebvttFile);
subtitleSource.close();
for (let i = 0; i < 100; i++) {
context.fillStyle = ['red', 'green', 'blue', 'yellow'][i % 4];
context.fillRect(canvas.width * Math.random(), canvas.height * Math.random(), canvas.width * Math.random(), canvas.height * Math.random());