Add media conversion utility function, fix fragment/cluster reading issues, expand color space logic, add qualitative bitrates, & many other fixes and improvements

dev/convert.html

@@ -0,0 +1,72 @@
+<!DOCTYPE html>
+
+<script src="../dist/metamuxer.js"></script>
+
+<script type="module">
+	const fileInput = document.createElement('input');
+	fileInput.type = 'file';
+	document.body.append(fileInput);
+
+	const progress = document.createElement('progress');	
+	progress.max = 1;
+	document.body.append(progress);
+
+	fileInput.addEventListener('change', async () => {
+		const file = fileInput.files[0];
+
+		const source = new Metamuxer.BlobSource(file);
+		const target = new Metamuxer.BufferTarget();
+		const outputFormat = new Metamuxer.Mp4OutputFormat()
+
+		console.time()
+		const res = await Metamuxer.convert({
+			input: new Metamuxer.Input({
+				formats: Metamuxer.ALL_FORMATS,	
+				source
+			}),
+			output: new Metamuxer.Output({
+				format: outputFormat,
+				target
+			}),
+			/*
+			video: {
+				discard: true,
+				bitrate: Metamuxer.QUALITY_VERY_HIGH,
+				//bitrate: Metamuxer.QUALITY_VERY_HIGH
+				codec: 'av1',
+				//width: 800,
+				//fit: 'fill',
+				//rotate: 90,
+			},
+			audio: {
+				bitrate: Metamuxer.QUALITY_HIGH,
+				codec: 'aac',
+			},
+			*/
+			audio: {
+				discard: true
+			},
+			trim: {
+				start: 0,
+				end: 60
+			},
+			onProgress: (event) => {
+				progress.value = event.completion;
+			}
+		});
+		console.timeEnd()
+		console.log(res)
+
+		console.log("Done", target.buffer);
+		download(new Blob([target.buffer]), 'converted' + outputFormat.getFileExtension());
+
+		function download(blob, filename) {
+			const url = URL.createObjectURL(blob);
+			const a = document.createElement('a');
+			a.href = url;
+			a.download = filename;
+			a.click();
+			URL.revokeObjectURL(url);
+		}
+	});
+</script>

dev/demux.html

@@ -6,32 +6,23 @@
 	const fileInput = document.createElement('input');
 	fileInput.type = 'file';
 	document.body.append(fileInput);
-	
-	/*
-	const encoder = new AudioEncoder({
-		output: console.log,
-		error: console.error
-	});
-	encoder.configure({
-		codec: 'vorbis',
-		numberOfChannels: 2,
-		sampleRate: 48000,
-		bitrate: 128000
-	});
-
-	let audioData = new AudioData({
-		format: 'f32',
-		numberOfChannels: 2,
-		sampleRate: 48000,
-		timestamp: 0,
-		data: new Float32Array(2 * 48000),
-		numberOfFrames: 48000
-	});
-	encoder.encode(audioData);
-	*/
 
 	fileInput.addEventListener('change', async () => {
 		const file = fileInput.files[0];
+		const source = new Metamuxer.BlobSource(file);
+
+		const input = new Metamuxer.Input({
+			formats: Metamuxer.ALL_FORMATS,
+			source
+		});
+
+		const videoTrack = await input.getPrimaryVideoTrack();
+		const sink = new Metamuxer.EncodedVideoSampleSink(videoTrack);
+
+		console.log(await sink.getSample(16));
+		console.log(await sink.getFirstSample());
+
+		/*
 		const source = new Metamuxer.BufferSource(await file.arrayBuffer()) ?? new Metamuxer.BlobSource(file);
 
 		const start = performance.now();	
@@ -45,6 +36,7 @@
 			target: new Metamuxer.BufferTarget()
 		});
 		output.start();
+		*/
 
 		/*
 		const audioTrack = await input.getPrimaryAudioTrack();