diff --git a/codec/h264/extract_test.go b/codec/h264/extract_test.go
index cf315606..eb82af1e 100644
--- a/codec/h264/extract_test.go
+++ b/codec/h264/extract_test.go
@@ -76,79 +76,81 @@ func TestRTPLex(t *testing.T) {
 		{
 			packets: [][]byte{
 				{ // Single NAL unit.
-					0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // RTP header.
+					128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RTP header.
 					typeSingleNALULowBound, // NAL header.
-					0x01, 0x02, 0x03, 0x04, // NAL Data.
+					1, 2, 3, 4,             // NAL Data.
 				},
 				{ // Fragmentation (start packet).
-					0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // RTP header.
-					typeFUA,                       // FU indicator.
-					0x80 | typeSingleNALULowBound, // FU header.
-					0x01, 0x02, 0x03,              // FU payload.
+					128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RTP header.
+					typeFUA,                      // FU indicator.
+					128 | typeSingleNALULowBound, // FU header.
+					1, 2, 3,                      // FU payload.
 				},
 				{ // Fragmentation (middle packet)
-					0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // RTP header.
+					128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RTP header.
 					typeFUA,                // NAL indicator.
 					typeSingleNALULowBound, // FU header.
-					0x04, 0x05, 0x06,       // FU payload.
+					4, 5, 6,                // FU payload.
 				},
 				{ // Fragmentation (end packet)
-					0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // RTP header.
+					128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RTP header.
 					typeFUA,                       // NAL indicator.
 					0x40 | typeSingleNALULowBound, // FU header.
-					0x07, 0x08, 0x09,              // FU payload
+					7, 8, 9,                       // FU payload
 				},
 
-				{ // Aggregation. Make last packet of access unit => marker bit true.
-					0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // RTP header.
-					typeSTAPA,  // NAL header.
-					0x00, 0x04, // NAL 1 size.
-					0x01, 0x02, 0x03, 0x04, // NAL 1 data.
-					0x00, 0x04, // NAL 2 size.
-					0x01, 0x02, 0x03, 0x04, // NAL 2 data.
+				{
+					128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RTP header.
+					typeSTAPA, // NAL header.
+					0, 4,      // NAL 1 size.
+					1, 2, 3, 4, // NAL 1 data.
+					0, 4, // NAL 2 size.
+					1, 2, 3, 4, // NAL 2 data.
 				},
-				// Second access unit.
 				{ // Single NAL unit.
-					0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // RTP header.
+					128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RTP header.
 					typeSingleNALULowBound, // NAL header.
-					0x01, 0x02, 0x03, 0x04, // NAL Data.
+					1, 2, 3, 4,             // NAL Data.
 				},
-				{ // Single NAL. Make last packet of access unit => marker bit true.
-					0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // RTP header.
+				{
+					128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RTP header.
 					typeSingleNALULowBound, // NAL header.
-					0x01, 0x02, 0x03, 0x04, // NAL data.
+					1, 2, 3, 4,             // NAL data.
 				},
 			},
 			expect: [][]byte{
-				// First access unit.
 				{
-					// NAL 1
-					0x00, 0x00, 0x00, 0x01, // Start code.
-					typeSingleNALULowBound, // NAL header.
-					0x01, 0x02, 0x03, 0x04, // NAL data.
-					// NAL 2
-					0x00, 0x00, 0x00, 0x01, // Start code.
-					typeSingleNALULowBound,
-					0x01, 0x02, 0x03, // FU payload.
-					0x04, 0x05, 0x06, // FU payload.
-					0x07, 0x08, 0x09, // FU payload.
-					// NAL 3
-					0x00, 0x00, 0x00, 0x01, // Start code.
-					0x01, 0x02, 0x03, 0x04, // NAL data.
-					// NAL 4
-					0x00, 0x00, 0x00, 0x01, // Start code.
-					0x01, 0x02, 0x03, 0x04, // NAL 2 data
+					0, 0, 1, 9, 240, // AUD
 				},
-				// Second access unit.
 				{
-					// NAL 1
-					0x00, 0x00, 0x00, 0x01, // Start code.
+					0, 0, 1, 9, 240, // AUD
+					0, 0, 0, 1, // Start code.
 					typeSingleNALULowBound, // NAL header.
-					0x01, 0x02, 0x03, 0x04, // Data.
-					// NAL 2
-					0x00, 0x00, 0x00, 0x01, // Start code.
+					1, 2, 3, 4,             // NAL data.
+				},
+				{
+					0, 0, 1, 9, 240, // AUD
+					0, 0, 0, 1, // Start code.
+					typeSingleNALULowBound,
+					1, 2, 3, // FU payload.
+					4, 5, 6, // FU payload.
+					7, 8, 9, // FU payload.
+				},
+				{
+					0, 0, 1, 9, 240, // AUD
+					0, 0, 0, 1, // Start code.
+					1, 2, 3, 4, // NAL data.
+				},
+				{
+					0, 0, 1, 9, 240, // AUD
+					0, 0, 0, 1, // Start code.
+					1, 2, 3, 4, // NAL data.
+				},
+				{
+					0, 0, 1, 9, 240, // AUD
+					0, 0, 0, 1, // Start code.
 					typeSingleNALULowBound, // NAL header.
-					0x01, 0x02, 0x03, 0x04, // Data.
+					1, 2, 3, 4,             // NAL data.
 				},
 			},
 		},