Fall back to color space information from bitstream, fill missing color space fields when passing it to Chromium's VideoDecoder, fix AV1 Sequence Header OBU parsing, fix vpcC box generation, still mux partial color space info into container (fixes #474, closes #475)

dev/demux.html

@@ -17,14 +17,11 @@
 			source: new Mediabunny.BlobSource(file),
 		});
 
-		const track = await input.getPrimaryAudioTrack();
-		const sink = new Mediabunny.AudioSampleSink(track);
-
-		for await (const sample of sink.samples()) {
-			console.log(sample);
-			sample.close()
-		}
+		const track = await input.getPrimaryVideoTrack();
+		const sink = new Mediabunny.EncodedPacketSink(track);
 
+		const packet = await sink.getFirstPacket();
+		console.log(packet);
 		/*
 
 		for await (const packet of packetSink.packets()) {