diff --git a/dev/demux.html b/dev/demux.html
index 3657899..8fd7a01 100644
--- a/dev/demux.html
+++ b/dev/demux.html
@@ -40,6 +40,15 @@
 			source
 		});
 
+		const videoTrack = await input.getPrimaryVideoTrack();
+		const sink = new Metamuxer.VideoFrameSink(videoTrack);
+
+		for await (const thing of sink.framesAtTimestamps([0.2, 1, 2, 423])) {
+			console.log(thing)
+		}
+		console.log("Done")
+
+		/*
 		//const videoTrack = await input.getPrimaryVideoTrack();
 		//console.log(await videoTrack.computeSampleStats());
 		//return;
@@ -71,26 +80,22 @@
 		
 		
 		
-		/*
-		for await (const sample of sink.samples()) {
-			//console.log(sample.timestamp);	
-			//sample.timestamp *= 2;
-			//console.log(sample);
-			//console.log(sample)
-			await sampleSource.digest(sample, { decoderConfig });
-		}
-			*/
+		//for await (const sample of sink.samples()) {
+		//	//console.log(sample.timestamp);	
+		//	//sample.timestamp *= 2;
+		//	//console.log(sample);
+		//	//console.log(sample)
+		//	await sampleSource.digest(sample, { decoderConfig });
+		//}
 		for await (const { data, timestamp } of new Metamuxer.AudioDataSink(audioTrack).data()) {
 			//console.log("wow", data.timestamp);
 			//console.log(sample)
 			await audioDataSource.digest(data);
 		}
-		/*
-		for await (const sample of new Metamuxer.EncodedVideoSampleSink(videoTrack).samples()) {
-			//console.log(sample)
-			await videoSampleSource.digest(sample, { decoderConfig: videoDecoderConfig });
-		}
-			*/
+		//for await (const sample of new Metamuxer.EncodedVideoSampleSink(videoTrack).samples()) {
+		//	//console.log(sample)
+		//	await videoSampleSource.digest(sample, { decoderConfig: videoDecoderConfig });
+		//}
 		
 		await output.finalize();
 
@@ -107,6 +112,7 @@
 		download(new Blob([target.buffer]), 'converted.wav');
 
 		document.body.textContent = performance.now() - start;
+		*/
 
 		/*
 		const input2 = new Metamuxer.Input({
diff --git a/src/codec.ts b/src/codec.ts
index 882dadb..ffdd70b 100644
--- a/src/codec.ts
+++ b/src/codec.ts
@@ -41,7 +41,7 @@ export const AUDIO_CODECS = [
 	'vorbis',
 	'flac',
 	...PCM_CODECS,
-] as const; // TODO add the rest
+] as const;
 /** @public */
 export const SUBTITLE_CODECS = ['webvtt'] as const; // TODO add the rest
 
diff --git a/src/media-sink.ts b/src/media-sink.ts
index 99dae39..229cc04 100644
--- a/src/media-sink.ts
+++ b/src/media-sink.ts
@@ -392,7 +392,10 @@ export abstract class BaseMediaFrameSink<
 				}
 
 				let frameUsed = false;
-				while (samplesOfInterest.length > 0 && samplesOfInterest[0] === wrappedFrame.sample) {
+				while (
+					samplesOfInterest.length > 0
+					&& samplesOfInterest[0]!.is(wrappedFrame.sample as EncodedVideoSample & EncodedAudioSample)
+				) {
 					pushToQueue(this._duplicateFrame(wrappedFrame));
 					samplesOfInterest.shift();
 					frameUsed = true;
diff --git a/src/sample.ts b/src/sample.ts
index cba8d25..4a53810 100644
--- a/src/sample.ts
+++ b/src/sample.ts
@@ -42,6 +42,15 @@ export class EncodedVideoSample {
 		});
 	}
 
+	is(otherSample: EncodedVideoSample) {
+		return (
+			this.type === otherSample.type
+			&& this.timestamp === otherSample.timestamp
+			&& this.duration === otherSample.duration
+			&& this.byteLength === otherSample.byteLength
+		);
+	}
+
 	static fromEncodedVideoChunk(chunk: EncodedVideoChunk) {
 		if (typeof EncodedVideoChunk === 'undefined') {
 			throw new Error('Your browser does not support EncodedVideoChunk.');
@@ -98,6 +107,15 @@ export class EncodedAudioSample {
 		});
 	}
 
+	is(otherSample: EncodedAudioSample) {
+		return (
+			this.type === otherSample.type
+			&& this.timestamp === otherSample.timestamp
+			&& this.duration === otherSample.duration
+			&& this.byteLength === otherSample.byteLength
+		);
+	}
+
 	static fromEncodedAudioChunk(chunk: EncodedAudioChunk) {
 		if (typeof EncodedAudioChunk === 'undefined') {
 			throw new Error('Your browser does not support EncodedAudioChunk.');