Add strict slice range validation, fix RF64 reading error (fixes #146)

dev/demux.html

@@ -14,12 +14,21 @@
 			source: new Mediabunny.BlobSource(file),
 		});
 
+		const audioTrack = await input.getPrimaryAudioTrack();
+		
+		const sink = new Mediabunny.EncodedPacketSink(audioTrack);
+		for await (const packet of sink.packets()) {
+			console.log(packet)
+		}
+
+		/*
 		const videoTrack = await input.getPrimaryVideoTrack();
 		const sink = new Mediabunny.VideoSampleSink(videoTrack);
 
 		const sample = await sink.getSample(0);
 
 		console.log(sample);
+		*/
 
 		/*
 		const sink = new Mediabunny.EncodedPacketSink(videoTrack);