Adjust timestamp logic for media sinks for more accurate audio timing

dev/index.html

@@ -38,7 +38,7 @@
 	canvas.height = 720;
 	const context = canvas.getContext('2d');
 
-	let format = new Metamuxer.WebMOutputFormat({ streamable: false });
+	let format = new Metamuxer.MkvOutputFormat({ streamable: false });
 	//format = new Metamuxer.Mp4OutputFormat({ fastStart: 'fragmented' }); // new Metamuxer.MkvOutputFormat();// new Metamuxer.Mp4OutputFormat({ fastStart: false });
 	let target = new Metamuxer.BufferTarget();
 
@@ -88,7 +88,7 @@
 		bitrate: 1e6
 	});
 	let audioSource = new Metamuxer.AudioBufferSource({
-		codec: 'opus',
+		codec: 'pcm-s16',
 		bitrate: 128e3,
 	});
 	let subtitleSource = new Metamuxer.TextSubtitleSource('webvtt');