remove useless append()

internal/core/rtsp_session.go

@@ -395,7 +395,7 @@ func (s *rtspSession) onPacketRTP(ctx *gortsplib.ServerHandlerOnPacketRTPCtx) {
 			rtpPacket:    ctx.Packet,
 			ptsEqualsDTS: ctx.PTSEqualsDTS,
 			pts:          ctx.H264PTS,
-			h264NALUs:    append([][]byte(nil), ctx.H264NALUs...),
+			h264NALUs:    ctx.H264NALUs,
 		})
 	} else {
 		s.stream.writeData(&data{

internal/core/rtsp_source.go

@@ -146,7 +146,7 @@ func (s *rtspSource) run(ctx context.Context) error {
 						rtpPacket:    ctx.Packet,
 						ptsEqualsDTS: ctx.PTSEqualsDTS,
 						pts:          ctx.H264PTS,
-						h264NALUs:    append([][]byte(nil), ctx.H264NALUs...),
+						h264NALUs:    ctx.H264NALUs,
 					})
 				} else {
 					res.stream.writeData(&data{

internal/core/streamtrack_h264.go

@@ -40,12 +40,12 @@ func (t *streamTrackH264) updateTrackParameters(nalus [][]byte) {
 		switch typ {
 		case h264.NALUTypeSPS:
 			if !bytes.Equal(nalu, t.track.SafeSPS()) {
-				t.track.SafeSetSPS(append([]byte(nil), nalu...))
+				t.track.SafeSetSPS(nalu)
 			}
 
 		case h264.NALUTypePPS:
 			if !bytes.Equal(nalu, t.track.SafePPS()) {
-				t.track.SafeSetPPS(append([]byte(nil), nalu...))
+				t.track.SafeSetPPS(nalu)
 			}
 		}
 	}

internal/hls/muxer_variant_fmp4_segmenter.go

@@ -163,7 +163,7 @@ func (m *muxerVariantFMP4Segmenter) writeH264Entry(sample *fmp4.VideoSample) err
 
 		m.videoFirstIDRReceived = true
 		m.videoDTSExtractor = h264.NewDTSExtractor()
-		m.videoSPS = append([]byte(nil), m.videoTrack.SafeSPS()...)
+		m.videoSPS = m.videoTrack.SafeSPS()
 
 		var err error
 		sample.DTS, err = m.videoDTSExtractor.Extract(sample.NALUs, sample.PTS)
@@ -249,7 +249,7 @@ func (m *muxerVariantFMP4Segmenter) writeH264Entry(sample *fmp4.VideoSample) err
 
 			// if SPS changed, reset adjusted part duration
 			if spsChanged {
-				m.videoSPS = append([]byte(nil), sps...)
+				m.videoSPS = sps
 				m.firstSegmentFinalized = false
 				m.sampleDurations = make(map[time.Duration]struct{})
 			}